Rockville Weather Records (USC00127522)
Record envelope, standing records and threshold days for Rockville (USC00127522), Indiana, United States, with 134 years of record.
Key Facts for Rockville
- Rockville (USC00127522) is a weather station in Indiana, United States at 39.76 latitude and -87.23 longitude, 210 m (689 ft) above sea level.
- The station reports from 1893 to 2026, 134 years of record.
- 1,464 records set at Rockville still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Rockville set a daily record high minimum temperature of 21.1 C (70.0 F) on 14 October 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: Indiana, United States, 39.76 latitude, -87.23 longitude.
- Elevation: 210 m (689 ft).
- Period of record: 1893 to 2026, 134 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
10 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 21.1 C (70.0 F) | -31.7 C (-25.1 F) | 17.2 C (63.0 F) | -25.0 C (-13.0 F) |
| Feb | 23.3 C (73.9 F) | -30.0 C (-22.0 F) | 20.6 C (69.1 F) | -21.1 C (-6.0 F) |
| Mar | 31.7 C (89.1 F) | -22.8 C (-9.0 F) | 31.1 C (88.0 F) | -12.8 C (9.0 F) |
| Apr | 33.3 C (91.9 F) | -9.4 C (15.1 F) | 28.9 C (84.0 F) | -1.7 C (28.9 F) |
| May | 36.1 C (97.0 F) | -3.9 C (25.0 F) | 30.0 C (86.0 F) | 0.0 C (32.0 F) |
| Jun | 40.6 C (105.1 F) | 1.1 C (34.0 F) | 33.9 C (93.0 F) | 8.3 C (46.9 F) |
| Jul | 42.8 C (109.0 F) | 6.1 C (43.0 F) | 35.0 C (95.0 F) | 11.1 C (52.0 F) |
| Aug | 41.1 C (106.0 F) | 3.9 C (39.0 F) | 34.4 C (93.9 F) | 11.7 C (53.1 F) |
| Sep | 39.4 C (102.9 F) | -3.9 C (25.0 F) | 36.1 C (97.0 F) | 6.1 C (43.0 F) |
| Oct | 33.3 C (91.9 F) | -7.8 C (18.0 F) | 32.8 C (91.0 F) | 5.0 C (41.0 F) |
| Nov | 27.8 C (82.0 F) | -20.6 C (-5.1 F) | n/a | n/a |
| Dec | 23.3 C (73.9 F) | -30.0 C (-22.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1893 | 10 |
| 1894 | 23 |
| 1895 | 28 |
| 1896 | 19 |
| 1897 | 25 |
| 1898 | 5 |
| 1899 | 20 |
| 1900 | 7 |
| 1901 | 14 |
| 1902 | 9 |
| 1903 | 14 |
| 1904 | 8 |
| 1905 | 8 |
| 1906 | 12 |
| 1907 | 7 |
| 1908 | 9 |
| 1909 | 13 |
| 1910 | 18 |
| 1911 | 10 |
| 1912 | 13 |
| 1913 | 25 |
| 1914 | 14 |
| 1915 | 14 |
| 1916 | 13 |
| 1917 | 20 |
| 1918 | 14 |
| 1919 | 9 |
| 1920 | 7 |
| 1921 | 7 |
| 1922 | 7 |
| 1923 | 11 |
| 1924 | 13 |
| 1925 | 27 |
| 1926 | 8 |
| 1927 | 18 |
| 1928 | 13 |
| 1929 | 13 |
| 1930 | 25 |
| 1931 | 18 |
| 1932 | 11 |
| 1933 | 15 |
| 1934 | 28 |
| 1935 | 7 |
| 1936 | 37 |
| 1937 | 12 |
| 1938 | 11 |
| 1939 | 8 |
| 1940 | 12 |
| 1941 | 9 |
| 1942 | 12 |
| 1943 | 13 |
| 1944 | 10 |
| 1945 | 6 |
| 1946 | 6 |
| 1947 | 4 |
| 1948 | 7 |
| 1949 | 7 |
| 1950 | 19 |
| 1951 | 11 |
| 1952 | 12 |
| 1953 | 13 |
| 1954 | 17 |
| 1955 | 12 |
| 1956 | 7 |
| 1957 | 2 |
| 1958 | 7 |
| 1959 | 9 |
| 1960 | 12 |
| 1961 | 2 |
| 1962 | 5 |
| 1963 | 13 |
| 1964 | 10 |
| 1965 | 14 |
| 1966 | 6 |
| 1967 | 15 |
| 1968 | 9 |
| 1969 | 1 |
| 1970 | 6 |
| 1971 | 5 |
| 1972 | 7 |
| 1973 | 4 |
| 1974 | 12 |
| 1975 | 5 |
| 1976 | 8 |
| 1977 | 8 |
| 1978 | 3 |
| 1979 | 11 |
| 1980 | 7 |
| 1981 | 7 |
| 1982 | 16 |
| 1983 | 11 |
| 1984 | 14 |
| 1985 | 10 |
| 1986 | 9 |
| 1987 | 5 |
| 1988 | 12 |
| 1989 | 10 |
| 1990 | 15 |
| 1991 | 15 |
| 1992 | 10 |
| 1993 | 3 |
| 1994 | 7 |
| 1995 | 5 |
| 1996 | 14 |
| 1997 | 10 |
| 1998 | 12 |
| 1999 | 8 |
| 2000 | 7 |
| 2001 | 10 |
| 2002 | 9 |
| 2003 | 8 |
| 2004 | 4 |
| 2005 | 2 |
| 2006 | 2 |
| 2007 | 7 |
| 2008 | 3 |
| 2009 | 6 |
| 2010 | 7 |
| 2011 | 6 |
| 2012 | 19 |
| 2013 | 5 |
| 2014 | 6 |
| 2015 | 8 |
| 2016 | 7 |
| 2017 | 15 |
| 2018 | 19 |
| 2019 | 14 |
| 2020 | 12 |
| 2021 | 8 |
| 2022 | 10 |
| 2023 | 9 |
| 2024 | 12 |
| 2025 | 7 |
| 2026 | 14 |
All-Time Record Progression
14 new records| Date | Kind | Detail |
|---|---|---|
| 1931-09-15 | Record daily precipitation | Record daily precipitation 102.1 mm (4.0 in) |
| 1934-07-23 | Record high maximum temperature | Record high maximum temperature 41.7 C (107.1 F) |
| 1934-07-25 | Record high maximum temperature | Record high maximum temperature 42.2 C (108.0 F) |
| 1935-05-02 | Record daily precipitation | Record daily precipitation 107.7 mm (4.2 in) |
| 1936-07-14 | Record high maximum temperature | Record high maximum temperature 42.8 C (109.0 F) |
| 1957-06-28 | Record daily precipitation | Record daily precipitation 222.0 mm (8.7 in) |
| 1977-12-08 | Record snow depth | Record snow depth 45.7 cm (18.0 in) |
| 1978-01-30 | Record snow depth | Record snow depth 58.4 cm (23.0 in) |
| 1978-02-01 | Record snow depth | Record snow depth 61.0 cm (24.0 in) |
| 1978-02-05 | Record snow depth | Record snow depth 63.5 cm (25.0 in) |
| 1982-01-17 | Record low minimum temperature | Record low minimum temperature -30.6 C (-23.1 F) |
| 1994-01-19 | Record low minimum temperature | Record low minimum temperature -31.7 C (-25.1 F) |
| 1996-03-20 | Record daily snowfall | Record daily snowfall 48.3 cm (19.0 in) |
| 2012-07-26 | Record high minimum temperature | Record high minimum temperature 30.6 C (87.1 F) |
Wettest Day of Each Month
Jun: 222.0 mm (8.7 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 73.9 mm (2.9 in) | 3 January 1950 |
| Feb | 88.6 mm (3.5 in) | 28 February 2011 |
| Mar | 94.0 mm (3.7 in) | 14 March 1922 |
| Apr | 106.7 mm (4.2 in) | 3 April 2018 |
| May | 204.5 mm (8.1 in) | 26 May 1989 |
| Jun | 222.0 mm (8.7 in) | 28 June 1957 |
| Jul | 152.4 mm (6.0 in) | 30 July 1990 |
| Aug | 120.1 mm (4.7 in) | 12 August 1993 |
| Sep | 138.7 mm (5.5 in) | 1 September 2003 |
| Oct | 96.0 mm (3.8 in) | 18 October 1917 |
| Nov | 105.4 mm (4.1 in) | 12 November 1992 |
| Dec | 140.2 mm (5.5 in) | 21 December 1967 |
Period of Record Coverage
1893 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1893 | 362 | 99% | Yes |
| 1894 | 363 | 99% | Yes |
| 1895 | 360 | 99% | Yes |
| 1896 | 364 | 99% | Yes |
| 1897 | 360 | 99% | Yes |
| 1898 | 364 | 100% | Yes |
| 1899 | 364 | 100% | Yes |
| 1900 | 365 | 100% | Yes |
| 1901 | 362 | 99% | Yes |
| 1902 | 364 | 100% | Yes |
| 1903 | 364 | 100% | Yes |
| 1904 | 365 | 100% | Yes |
| 1905 | 365 | 100% | Yes |
| 1906 | 364 | 100% | Yes |
| 1907 | 365 | 100% | Yes |
| 1908 | 366 | 100% | Yes |
| 1909 | 362 | 99% | Yes |
| 1910 | 364 | 100% | Yes |
| 1911 | 333 | 91% | Yes |
| 1912 | 345 | 94% | Yes |
| 1913 | 364 | 100% | Yes |
| 1914 | 365 | 100% | Yes |
| 1915 | 362 | 99% | Yes |
| 1916 | 364 | 99% | Yes |
| 1917 | 365 | 100% | Yes |
| 1918 | 364 | 100% | Yes |
| 1919 | 365 | 100% | Yes |
| 1920 | 364 | 99% | Yes |
| 1921 | 362 | 99% | Yes |
| 1922 | 364 | 100% | Yes |
| 1923 | 364 | 100% | Yes |
| 1924 | 366 | 100% | Yes |
| 1925 | 363 | 99% | Yes |
| 1926 | 363 | 99% | Yes |
| 1927 | 365 | 100% | Yes |
| 1928 | 359 | 98% | Yes |
| 1929 | 364 | 100% | Yes |
| 1930 | 365 | 100% | Yes |
| 1931 | 365 | 100% | Yes |
| 1932 | 366 | 100% | Yes |
| 1933 | 364 | 100% | Yes |
| 1934 | 364 | 100% | Yes |
| 1935 | 365 | 100% | Yes |
| 1936 | 366 | 100% | Yes |
| 1937 | 365 | 100% | Yes |
| 1938 | 365 | 100% | Yes |
| 1939 | 365 | 100% | Yes |
| 1940 | 366 | 100% | Yes |
| 1941 | 365 | 100% | Yes |
| 1942 | 365 | 100% | Yes |
| 1943 | 365 | 100% | Yes |
| 1944 | 365 | 100% | Yes |
| 1945 | 364 | 100% | Yes |
| 1946 | 364 | 100% | Yes |
| 1947 | 365 | 100% | Yes |
| 1948 | 335 | 92% | Yes |
| 1949 | 364 | 100% | Yes |
| 1950 | 365 | 100% | Yes |
| 1951 | 365 | 100% | Yes |
| 1952 | 366 | 100% | Yes |
| 1953 | 364 | 100% | Yes |
| 1954 | 365 | 100% | Yes |
| 1955 | 365 | 100% | Yes |
| 1956 | 364 | 99% | Yes |
| 1957 | 364 | 100% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 365 | 100% | Yes |
| 1960 | 366 | 100% | Yes |
| 1961 | 149 | 41% | No |
| 1962 | 200 | 55% | No |
| 1963 | 365 | 100% | Yes |
| 1964 | 365 | 100% | Yes |
| 1965 | 364 | 100% | Yes |
| 1966 | 364 | 100% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 363 | 99% | Yes |
| 1972 | 357 | 98% | Yes |
| 1973 | 362 | 99% | Yes |
| 1974 | 364 | 100% | Yes |
| 1975 | 362 | 99% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 337 | 92% | Yes |
| 1978 | 360 | 99% | Yes |
| 1979 | 301 | 82% | No |
| 1980 | 364 | 99% | Yes |
| 1981 | 361 | 99% | Yes |
| 1982 | 362 | 99% | Yes |
| 1983 | 360 | 99% | Yes |
| 1984 | 355 | 97% | Yes |
| 1985 | 352 | 96% | Yes |
| 1986 | 359 | 98% | Yes |
| 1987 | 362 | 99% | Yes |
| 1988 | 364 | 99% | Yes |
| 1989 | 363 | 99% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 364 | 100% | Yes |
| 1992 | 363 | 99% | Yes |
| 1993 | 363 | 99% | Yes |
| 1994 | 362 | 99% | Yes |
| 1995 | 360 | 99% | Yes |
| 1996 | 365 | 100% | Yes |
| 1997 | 357 | 98% | Yes |
| 1998 | 362 | 99% | Yes |
| 1999 | 359 | 98% | Yes |
| 2000 | 358 | 98% | Yes |
| 2001 | 362 | 99% | Yes |
| 2002 | 360 | 99% | Yes |
| 2003 | 363 | 99% | Yes |
| 2004 | 331 | 90% | Yes |
| 2005 | 364 | 100% | Yes |
| 2006 | 360 | 99% | Yes |
| 2007 | 360 | 99% | Yes |
| 2008 | 343 | 94% | Yes |
| 2009 | 361 | 99% | Yes |
| 2010 | 360 | 99% | Yes |
| 2011 | 363 | 99% | Yes |
| 2012 | 361 | 99% | Yes |
| 2013 | 209 | 57% | No |
| 2014 | 171 | 47% | No |
| 2015 | 144 | 39% | No |
| 2016 | 364 | 99% | Yes |
| 2017 | 364 | 100% | Yes |
| 2018 | 363 | 99% | Yes |
| 2019 | 363 | 99% | Yes |
| 2020 | 365 | 100% | Yes |
| 2021 | 315 | 86% | No |
| 2022 | 359 | 98% | Yes |
| 2023 | 363 | 99% | Yes |
| 2024 | 364 | 99% | Yes |
| 2025 | 365 | 100% | Yes |
| 2026 | 286 | 78% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 14 October 2026 | Rockville, US | daily high min (Provisional) | 21.1 C (70.0 F) | 2.2 C (4.0 F) | 4 years | 15 of 100 (Routine) |
| 14 October 2026 | Rockville, US | daily high max (Tie, Provisional) | 31.7 C (89.1 F) | tie | 126 years | 10 of 100 (Routine) |
| 13 October 2026 | Rockville, US | daily high min (Provisional) | 19.4 C (66.9 F) | 2.7 C (4.9 F) | 126 years | 44 of 100 (Notable) |
| 13 October 2026 | Rockville, US | daily high max (Provisional) | 32.8 C (91.0 F) | 2.8 C (5.0 F) | 51 years | 29 of 100 (Routine) |
| 18 September 2026 | Rockville, US | daily high min (Tie, Provisional) | 22.2 C (72.0 F) | tie | 48 years | 6 of 100 (Routine) |
| 16 September 2026 | Rockville, US | daily high min (Tie, Provisional) | 22.8 C (73.0 F) | tie | 95 years | 9 of 100 (Routine) |
| 9 September 2026 | Rockville, US | daily high min (Provisional) | 22.8 C (73.0 F) | 0.6 C (1.1 F) | 104 years | 41 of 100 (Notable) |
| 5 September 2026 | Rockville, US | daily high min (Provisional) | 23.9 C (75.0 F) | 1.7 C (3.1 F) | 12 years | 16 of 100 (Routine) |
| 4 September 2026 | Rockville, US | monthly high min (Tie, Provisional) | 24.4 C (75.9 F) | tie | 9 years | 5 of 100 (Routine) |
| 3 September 2026 | Rockville, US | daily high min (Tie, Provisional) | 23.3 C (73.9 F) | tie | 72 years | 7 of 100 (Routine) |
| 2 September 2026 | Rockville, US | daily high min (Tie, Provisional) | 22.2 C (72.0 F) | tie | 68 years | 7 of 100 (Routine) |
| 1 September 2026 | Rockville, US | daily high min (Tie, Provisional) | 23.3 C (73.9 F) | tie | 88 years | 9 of 100 (Routine) |
| 10 August 2026 | Rockville, US | daily high min | 25.6 C (78.1 F) | 0.6 C (1.1 F) | 92 years | 38 of 100 (Notable) |
| 1 August 2026 | Rockville, US | daily rain | 26.7 mm (1.1 in) | 5.1 mm (0.20 in) | 81 years | 37 of 100 (Notable) |
| 3 July 2026 | Rockville, US | daily high min | 25.6 C (78.1 F) | 1.2 C (2.2 F) | 27 years | 21 of 100 (Routine) |
| 29 June 2026 | Rockville, US | daily high min (Tie) | 25.0 C (77.0 F) | tie | 92 years | 9 of 100 (Routine) |
| 8 June 2026 | Rockville, US | daily high min (Tie) | 22.8 C (73.0 F) | tie | 92 years | 9 of 100 (Routine) |
| 27 May 2026 | Rockville, US | daily rain | 46.5 mm (1.8 in) | 18.1 mm (0.7 in) | 69 years | 43 of 100 (Notable) |
| 28 April 2026 | Rockville, US | daily rain | 45.2 mm (1.8 in) | 4.6 mm (0.18 in) | 15 years | 18 of 100 (Routine) |
| 15 April 2026 | Rockville, US | monthly high min (Tie) | 20.6 C (69.1 F) | tie | 25 years | 6 of 100 (Routine) |
Climate Trend
121 complete years, 1893 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1893 | 10.4 C | -1.41 C |
| 1894 | 11.8 C | -0.03 C |
| 1895 | 10.5 C | -1.26 C |
| 1896 | 11.7 C | -0.12 C |
| 1897 | 11.3 C | -0.48 C |
| 1898 | 11.5 C | -0.27 C |
| 1899 | 11.3 C | -0.50 C |
| 1900 | 12.0 C | +0.18 C |
| 1901 | 10.8 C | -1.00 C |
| 1902 | 11.0 C | -0.77 C |
| 1903 | 10.8 C | -1.04 C |
| 1904 | 10.0 C | -1.85 C |
| 1905 | 10.8 C | -1.00 C |
| 1906 | 11.4 C | -0.37 C |
| 1907 | 10.8 C | -1.01 C |
| 1908 | 12.3 C | +0.48 C |
| 1909 | 11.1 C | -0.69 C |
| 1910 | 10.6 C | -1.20 C |
| 1912 | 10.2 C | -1.65 C |
| 1913 | 12.9 C | +1.07 C |
| 1914 | 12.0 C | +0.23 C |
| 1915 | 11.1 C | -0.67 C |
| 1916 | 11.7 C | -0.15 C |
| 1917 | 10.0 C | -1.85 C |
| 1918 | 11.6 C | -0.25 C |
| 1919 | 12.2 C | +0.35 C |
| 1920 | 11.0 C | -0.81 C |
| 1921 | 13.5 C | +1.74 C |
| 1922 | 12.5 C | +0.68 C |
| 1923 | 11.6 C | -0.19 C |
| 1924 | 10.2 C | -1.58 C |
| 1925 | 11.7 C | -0.10 C |
| 1926 | 10.9 C | -0.90 C |
| 1927 | 11.8 C | +0.04 C |
| 1928 | 11.1 C | -0.70 C |
| 1929 | 10.7 C | -1.07 C |
| 1930 | 12.1 C | +0.33 C |
| 1931 | 13.4 C | +1.63 C |
| 1932 | 12.0 C | +0.21 C |
| 1933 | 12.9 C | +1.10 C |
| 1934 | 12.2 C | +0.44 C |
| 1935 | 11.6 C | -0.20 C |
| 1936 | 11.9 C | +0.12 C |
| 1937 | 11.1 C | -0.75 C |
| 1938 | 12.9 C | +1.11 C |
| 1939 | 12.5 C | +0.70 C |
| 1940 | 11.0 C | -0.79 C |
| 1941 | 12.5 C | +0.71 C |
| 1942 | 11.6 C | -0.16 C |
| 1943 | 11.0 C | -0.76 C |
| 1944 | 11.8 C | -0.01 C |
| 1945 | 11.2 C | -0.64 C |
| 1946 | 12.6 C | +0.78 C |
| 1947 | 11.4 C | -0.45 C |
| 1949 | 12.8 C | +0.96 C |
| 1950 | 10.8 C | -1.05 C |
| 1951 | 11.0 C | -0.85 C |
| 1952 | 12.3 C | +0.46 C |
| 1953 | 12.9 C | +1.08 C |
| 1954 | 12.8 C | +0.99 C |
| 1955 | 12.2 C | +0.39 C |
| 1956 | 12.3 C | +0.53 C |
| 1957 | 11.9 C | +0.07 C |
| 1958 | 10.7 C | -1.07 C |
| 1959 | 12.1 C | +0.32 C |
| 1960 | 11.1 C | -0.71 C |
| 1963 | 11.2 C | -0.64 C |
| 1964 | 12.4 C | +0.62 C |
| 1965 | 12.2 C | +0.38 C |
| 1966 | 11.4 C | -0.36 C |
| 1967 | 11.5 C | -0.35 C |
| 1968 | 11.5 C | -0.31 C |
| 1969 | 11.3 C | -0.55 C |
| 1970 | 11.9 C | +0.08 C |
| 1971 | 12.1 C | +0.25 C |
| 1972 | 11.3 C | -0.47 C |
| 1973 | 12.8 C | +1.01 C |
| 1974 | 12.0 C | +0.16 C |
| 1975 | 12.2 C | +0.38 C |
| 1976 | 11.3 C | -0.52 C |
| 1977 | 11.9 C | +0.08 C |
| 1980 | 11.1 C | -0.70 C |
| 1981 | 11.5 C | -0.35 C |
| 1982 | 11.4 C | -0.41 C |
| 1983 | 11.9 C | +0.14 C |
| 1984 | 12.0 C | +0.16 C |
| 1985 | 11.8 C | +0.02 C |
| 1986 | 12.6 C | +0.81 C |
| 1987 | 12.8 C | +1.04 C |
| 1988 | 12.0 C | +0.17 C |
| 1989 | 11.3 C | -0.52 C |
| 1990 | 13.0 C | +1.22 C |
| 1991 | 13.2 C | +1.38 C |
| 1992 | 12.0 C | +0.21 C |
| 1993 | 11.4 C | -0.37 C |
| 1994 | 12.1 C | +0.26 C |
| 1995 | 12.0 C | +0.17 C |
| 1996 | 11.1 C | -0.69 C |
| 1997 | 11.4 C | -0.37 C |
| 1998 | 13.7 C | +1.92 C |
| 1999 | 13.1 C | +1.29 C |
| 2000 | 12.0 C | +0.22 C |
| 2001 | 12.8 C | +0.97 C |
| 2002 | 12.6 C | +0.80 C |
| 2003 | 11.8 C | -0.05 C |
| 2005 | 12.6 C | +0.76 C |
| 2006 | 12.7 C | +0.90 C |
| 2007 | 12.5 C | +0.65 C |
| 2009 | 11.6 C | -0.16 C |
| 2010 | 12.5 C | +0.66 C |
| 2011 | 12.9 C | +1.10 C |
| 2012 | 13.7 C | +1.93 C |
| 2016 | 13.4 C | +1.61 C |
| 2017 | 13.0 C | +1.16 C |
| 2018 | 11.2 C | -0.61 C |
| 2019 | 10.8 C | -1.00 C |
| 2020 | 11.4 C | -0.44 C |
| 2022 | 11.0 C | -0.81 C |
| 2023 | 12.3 C | +0.45 C |
| 2024 | 12.9 C | +1.06 C |
| 2025 | 11.7 C | -0.09 C |
The annual mean temperature here has risen by 0.08 C (0.05 to 0.12) per decade over 1893 to 2025. In Fahrenheit: 0.2 F (0.1 to 0.2) per decade. The slope is a straight line fitted to 121 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.08 C (0.05 to 0.12) per decade | 0.2 F (0.1 to 0.2) per decade | 1893 to 2025 | 121 | Rise |
| Mean daily maximum | 0.1 C (0.1 to 0.2) per decade | 0.2 F (0.1 to 0.3) per decade | 1893 to 2025 | 121 | Rise |
| Mean daily minimum | 0.05 C (0.01 to 0.09) per decade | 0.09 F (0.02 to 0.16) per decade | 1893 to 2025 | 121 | Rise |
A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.
Extremes by Year
1893 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 42.8 C (109.0 F) | 1936 | 36.1 C (97.0 F) | 134 |
| Coldest night (TNn) | -31.7 C (-25.1 F) | 1994 | -22.2 C (-8.0 F) | 134 |
| Wettest day (Rx1day) | 222.0 mm (8.7 in) | 1957 | 69.9 mm (2.8 in) | 134 |
| Wettest five days (Rx5day) | 260.3 mm (10.2 in) | 1957 | 102.7 mm (4.0 in) | 134 |
| Longest dry spell (CDD) | 45 days | 1908 | 19 days | 134 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1893 | 36.1 C (97.0 F) |
| 1894 | 37.8 C (100.0 F) |
| 1895 | 37.8 C (100.0 F) |
| 1896 | 36.1 C (97.0 F) |
| 1897 | 36.7 C (98.1 F) |
| 1898 | 35.0 C (95.0 F) |
| 1899 | 39.4 C (102.9 F) |
| 1900 | 34.4 C (93.9 F) |
| 1901 | 40.0 C (104.0 F) |
| 1902 | 33.3 C (91.9 F) |
| 1903 | 34.4 C (93.9 F) |
| 1904 | 33.3 C (91.9 F) |
| 1905 | 33.9 C (93.0 F) |
| 1906 | 33.3 C (91.9 F) |
| 1907 | 33.3 C (91.9 F) |
| 1908 | 35.6 C (96.1 F) |
| 1909 | 33.3 C (91.9 F) |
| 1910 | 33.3 C (91.9 F) |
| 1911 | 37.2 C (99.0 F) |
| 1912 | 36.7 C (98.1 F) |
| 1913 | 40.6 C (105.1 F) |
| 1914 | 39.4 C (102.9 F) |
| 1915 | 33.3 C (91.9 F) |
| 1916 | 38.9 C (102.0 F) |
| 1917 | 35.6 C (96.1 F) |
| 1918 | 41.1 C (106.0 F) |
| 1919 | 37.8 C (100.0 F) |
| 1920 | 36.7 C (98.1 F) |
| 1921 | 37.2 C (99.0 F) |
| 1922 | 37.2 C (99.0 F) |
| 1923 | 36.7 C (98.1 F) |
| 1924 | 36.7 C (98.1 F) |
| 1925 | 38.9 C (102.0 F) |
| 1926 | 37.2 C (99.0 F) |
| 1927 | 36.7 C (98.1 F) |
| 1928 | 35.0 C (95.0 F) |
| 1929 | 35.6 C (96.1 F) |
| 1930 | 40.0 C (104.0 F) |
| 1931 | 37.8 C (100.0 F) |
| 1932 | 38.3 C (100.9 F) |
| 1933 | 38.9 C (102.0 F) |
| 1934 | 42.2 C (108.0 F) |
| 1935 | 37.2 C (99.0 F) |
| 1936 | 42.8 C (109.0 F) |
| 1937 | 35.6 C (96.1 F) |
| 1938 | 35.6 C (96.1 F) |
| 1939 | 38.3 C (100.9 F) |
| 1940 | 38.3 C (100.9 F) |
| 1941 | 37.8 C (100.0 F) |
| 1942 | 36.1 C (97.0 F) |
| 1943 | 37.2 C (99.0 F) |
| 1944 | 37.2 C (99.0 F) |
| 1945 | 37.2 C (99.0 F) |
| 1946 | 37.2 C (99.0 F) |
| 1947 | 37.8 C (100.0 F) |
| 1948 | 36.7 C (98.1 F) |
| 1949 | 35.6 C (96.1 F) |
| 1950 | 32.8 C (91.0 F) |
| 1951 | 36.7 C (98.1 F) |
| 1952 | 37.2 C (99.0 F) |
| 1953 | 39.4 C (102.9 F) |
| 1954 | 41.1 C (106.0 F) |
| 1955 | 36.7 C (98.1 F) |
| 1956 | 36.1 C (97.0 F) |
| 1957 | 34.4 C (93.9 F) |
| 1958 | 33.9 C (93.0 F) |
| 1959 | 36.1 C (97.0 F) |
| 1960 | 37.2 C (99.0 F) |
| 1961 | 28.3 C (82.9 F) |
| 1962 | 37.8 C (100.0 F) |
| 1963 | 36.1 C (97.0 F) |
| 1964 | 38.3 C (100.9 F) |
| 1965 | 36.1 C (97.0 F) |
| 1966 | 38.9 C (102.0 F) |
| 1967 | 34.4 C (93.9 F) |
| 1968 | 35.0 C (95.0 F) |
| 1969 | 35.0 C (95.0 F) |
| 1970 | 38.9 C (102.0 F) |
| 1971 | 35.6 C (96.1 F) |
| 1972 | 34.4 C (93.9 F) |
| 1973 | 33.9 C (93.0 F) |
| 1974 | 35.0 C (95.0 F) |
| 1975 | 33.9 C (93.0 F) |
| 1976 | 36.1 C (97.0 F) |
| 1977 | 36.1 C (97.0 F) |
| 1978 | 36.1 C (97.0 F) |
| 1979 | 34.4 C (93.9 F) |
| 1980 | 39.4 C (102.9 F) |
| 1981 | 36.1 C (97.0 F) |
| 1982 | 33.3 C (91.9 F) |
| 1983 | 38.9 C (102.0 F) |
| 1984 | 40.0 C (104.0 F) |
| 1985 | 35.0 C (95.0 F) |
| 1986 | 36.7 C (98.1 F) |
| 1987 | 36.1 C (97.0 F) |
| 1988 | 39.4 C (102.9 F) |
| 1989 | 35.0 C (95.0 F) |
| 1990 | 37.8 C (100.0 F) |
| 1991 | 36.7 C (98.1 F) |
| 1992 | 35.6 C (96.1 F) |
| 1993 | 34.4 C (93.9 F) |
| 1994 | 36.1 C (97.0 F) |
| 1995 | 37.2 C (99.0 F) |
| 1996 | 35.0 C (95.0 F) |
| 1997 | 36.7 C (98.1 F) |
| 1998 | 35.6 C (96.1 F) |
| 1999 | 37.8 C (100.0 F) |
| 2000 | 33.9 C (93.0 F) |
| 2001 | 33.9 C (93.0 F) |
| 2002 | 35.6 C (96.1 F) |
| 2003 | 35.0 C (95.0 F) |
| 2004 | 32.8 C (91.0 F) |
| 2005 | 35.6 C (96.1 F) |
| 2006 | 36.1 C (97.0 F) |
| 2007 | 35.6 C (96.1 F) |
| 2008 | 32.8 C (91.0 F) |
| 2009 | 33.9 C (93.0 F) |
| 2010 | 36.7 C (98.1 F) |
| 2011 | 37.8 C (100.0 F) |
| 2012 | 41.1 C (106.0 F) |
| 2013 | 35.6 C (96.1 F) |
| 2014 | 33.9 C (93.0 F) |
| 2015 | 33.9 C (93.0 F) |
| 2016 | 35.0 C (95.0 F) |
| 2017 | 34.4 C (93.9 F) |
| 2018 | 36.1 C (97.0 F) |
| 2019 | 34.4 C (93.9 F) |
| 2020 | 34.4 C (93.9 F) |
| 2021 | 36.1 C (97.0 F) |
| 2022 | 37.2 C (99.0 F) |
| 2023 | 36.7 C (98.1 F) |
| 2024 | 36.7 C (98.1 F) |
| 2025 | 35.0 C (95.0 F) |
| 2026 | 36.1 C (97.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1893 | -28.3 C (-18.9 F) |
| 1894 | -24.4 C (-11.9 F) |
| 1895 | -28.9 C (-20.0 F) |
| 1896 | -20.6 C (-5.1 F) |
| 1897 | -26.1 C (-15.0 F) |
| 1898 | -21.7 C (-7.1 F) |
| 1899 | -28.9 C (-20.0 F) |
| 1900 | -21.7 C (-7.1 F) |
| 1901 | -24.4 C (-11.9 F) |
| 1902 | -22.2 C (-8.0 F) |
| 1903 | -25.0 C (-13.0 F) |
| 1904 | -25.6 C (-14.1 F) |
| 1905 | -30.0 C (-22.0 F) |
| 1906 | -21.1 C (-6.0 F) |
| 1907 | -17.8 C (0.0 F) |
| 1908 | -17.8 C (0.0 F) |
| 1909 | -25.0 C (-13.0 F) |
| 1910 | -23.9 C (-11.0 F) |
| 1911 | -17.8 C (0.0 F) |
| 1912 | -29.4 C (-20.9 F) |
| 1913 | -20.0 C (-4.0 F) |
| 1914 | -25.0 C (-13.0 F) |
| 1915 | -27.8 C (-18.0 F) |
| 1916 | -21.7 C (-7.1 F) |
| 1917 | -26.1 C (-15.0 F) |
| 1918 | -28.9 C (-20.0 F) |
| 1919 | -20.6 C (-5.1 F) |
| 1920 | -21.7 C (-7.1 F) |
| 1921 | -12.8 C (9.0 F) |
| 1922 | -21.1 C (-6.0 F) |
| 1923 | -18.9 C (-2.0 F) |
| 1924 | -30.0 C (-22.0 F) |
| 1925 | -21.1 C (-6.0 F) |
| 1926 | -19.4 C (-2.9 F) |
| 1927 | -27.8 C (-18.0 F) |
| 1928 | -22.2 C (-8.0 F) |
| 1929 | -21.1 C (-6.0 F) |
| 1930 | -28.3 C (-18.9 F) |
| 1931 | -14.4 C (6.1 F) |
| 1932 | -22.2 C (-8.0 F) |
| 1933 | -23.3 C (-9.9 F) |
| 1934 | -23.9 C (-11.0 F) |
| 1935 | -22.8 C (-9.0 F) |
| 1936 | -27.8 C (-18.0 F) |
| 1937 | -18.9 C (-2.0 F) |
| 1938 | -17.8 C (0.0 F) |
| 1939 | -18.9 C (-2.0 F) |
| 1940 | -25.0 C (-13.0 F) |
| 1941 | -16.7 C (1.9 F) |
| 1942 | -23.3 C (-9.9 F) |
| 1943 | -22.8 C (-9.0 F) |
| 1944 | -21.1 C (-6.0 F) |
| 1945 | -20.6 C (-5.1 F) |
| 1946 | -21.1 C (-6.0 F) |
| 1947 | -17.8 C (0.0 F) |
| 1948 | -21.7 C (-7.1 F) |
| 1949 | -18.9 C (-2.0 F) |
| 1950 | -21.7 C (-7.1 F) |
| 1951 | -26.1 C (-15.0 F) |
| 1952 | -16.1 C (3.0 F) |
| 1953 | -17.8 C (0.0 F) |
| 1954 | -17.2 C (1.0 F) |
| 1955 | -21.7 C (-7.1 F) |
| 1956 | -17.8 C (0.0 F) |
| 1957 | -23.3 C (-9.9 F) |
| 1958 | -21.1 C (-6.0 F) |
| 1959 | -22.8 C (-9.0 F) |
| 1960 | -23.9 C (-11.0 F) |
| 1961 | -20.6 C (-5.1 F) |
| 1962 | -22.8 C (-9.0 F) |
| 1963 | -28.9 C (-20.0 F) |
| 1964 | -22.2 C (-8.0 F) |
| 1965 | -23.9 C (-11.0 F) |
| 1966 | -24.4 C (-11.9 F) |
| 1967 | -22.2 C (-8.0 F) |
| 1968 | -27.2 C (-17.0 F) |
| 1969 | -20.6 C (-5.1 F) |
| 1970 | -24.4 C (-11.9 F) |
| 1971 | -21.7 C (-7.1 F) |
| 1972 | -28.9 C (-20.0 F) |
| 1973 | -20.0 C (-4.0 F) |
| 1974 | -23.9 C (-11.0 F) |
| 1975 | -23.3 C (-9.9 F) |
| 1976 | -23.3 C (-9.9 F) |
| 1977 | -30.0 C (-22.0 F) |
| 1978 | -25.6 C (-14.1 F) |
| 1979 | -26.1 C (-15.0 F) |
| 1980 | -21.7 C (-7.1 F) |
| 1981 | -25.6 C (-14.1 F) |
| 1982 | -30.6 C (-23.1 F) |
| 1983 | -27.8 C (-18.0 F) |
| 1984 | -28.9 C (-20.0 F) |
| 1985 | -30.0 C (-22.0 F) |
| 1986 | -20.0 C (-4.0 F) |
| 1987 | -22.2 C (-8.0 F) |
| 1988 | -21.1 C (-6.0 F) |
| 1989 | -29.4 C (-20.9 F) |
| 1990 | -21.7 C (-7.1 F) |
| 1991 | -19.4 C (-2.9 F) |
| 1992 | -22.2 C (-8.0 F) |
| 1993 | -20.6 C (-5.1 F) |
| 1994 | -31.7 C (-25.1 F) |
| 1995 | -20.0 C (-4.0 F) |
| 1996 | -26.1 C (-15.0 F) |
| 1997 | -23.3 C (-9.9 F) |
| 1998 | -15.6 C (3.9 F) |
| 1999 | -27.8 C (-18.0 F) |
| 2000 | -22.2 C (-8.0 F) |
| 2001 | -18.9 C (-2.0 F) |
| 2002 | -16.1 C (3.0 F) |
| 2003 | -25.6 C (-14.1 F) |
| 2004 | -28.3 C (-18.9 F) |
| 2005 | -19.4 C (-2.9 F) |
| 2006 | -16.1 C (3.0 F) |
| 2007 | -21.7 C (-7.1 F) |
| 2008 | -21.1 C (-6.0 F) |
| 2009 | -27.2 C (-17.0 F) |
| 2010 | -20.6 C (-5.1 F) |
| 2011 | -21.1 C (-6.0 F) |
| 2012 | -14.4 C (6.1 F) |
| 2013 | -15.0 C (5.0 F) |
| 2014 | -26.7 C (-16.1 F) |
| 2015 | -23.9 C (-11.0 F) |
| 2016 | -19.4 C (-2.9 F) |
| 2017 | -22.8 C (-9.0 F) |
| 2018 | -28.9 C (-20.0 F) |
| 2019 | -27.2 C (-17.0 F) |
| 2020 | -22.2 C (-8.0 F) |
| 2021 | -23.9 C (-11.0 F) |
| 2022 | -25.6 C (-14.1 F) |
| 2023 | -17.2 C (1.0 F) |
| 2024 | -25.6 C (-14.1 F) |
| 2025 | -25.6 C (-14.1 F) |
| 2026 | -25.0 C (-13.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1893 | 52.3 mm (2.1 in) |
| 1894 | 32.8 mm (1.3 in) |
| 1895 | 75.4 mm (3.0 in) |
| 1896 | 82.6 mm (3.3 in) |
| 1897 | 42.7 mm (1.7 in) |
| 1898 | 76.2 mm (3.0 in) |
| 1899 | 76.2 mm (3.0 in) |
| 1900 | 73.9 mm (2.9 in) |
| 1901 | 83.8 mm (3.3 in) |
| 1902 | 80.0 mm (3.1 in) |
| 1903 | 98.0 mm (3.9 in) |
| 1904 | 40.4 mm (1.6 in) |
| 1905 | 68.6 mm (2.7 in) |
| 1906 | 70.6 mm (2.8 in) |
| 1907 | 64.5 mm (2.5 in) |
| 1908 | 34.0 mm (1.3 in) |
| 1909 | 42.4 mm (1.7 in) |
| 1910 | 88.1 mm (3.5 in) |
| 1911 | 52.6 mm (2.1 in) |
| 1912 | 71.4 mm (2.8 in) |
| 1913 | 72.9 mm (2.9 in) |
| 1914 | 46.7 mm (1.8 in) |
| 1915 | 79.0 mm (3.1 in) |
| 1916 | 71.6 mm (2.8 in) |
| 1917 | 96.0 mm (3.8 in) |
| 1918 | 75.2 mm (3.0 in) |
| 1919 | 69.9 mm (2.8 in) |
| 1920 | 67.6 mm (2.7 in) |
| 1921 | 80.5 mm (3.2 in) |
| 1922 | 94.0 mm (3.7 in) |
| 1923 | 65.5 mm (2.6 in) |
| 1924 | 86.4 mm (3.4 in) |
| 1925 | 73.2 mm (2.9 in) |
| 1926 | 46.0 mm (1.8 in) |
| 1927 | 92.7 mm (3.6 in) |
| 1928 | 54.9 mm (2.2 in) |
| 1929 | 55.9 mm (2.2 in) |
| 1930 | 56.4 mm (2.2 in) |
| 1931 | 102.1 mm (4.0 in) |
| 1932 | 100.3 mm (3.9 in) |
| 1933 | 74.7 mm (2.9 in) |
| 1934 | 58.2 mm (2.3 in) |
| 1935 | 107.7 mm (4.2 in) |
| 1936 | 50.8 mm (2.0 in) |
| 1937 | 76.2 mm (3.0 in) |
| 1938 | 90.9 mm (3.6 in) |
| 1939 | 56.4 mm (2.2 in) |
| 1940 | 46.2 mm (1.8 in) |
| 1941 | 70.6 mm (2.8 in) |
| 1942 | 82.3 mm (3.2 in) |
| 1943 | 85.1 mm (3.4 in) |
| 1944 | 50.0 mm (2.0 in) |
| 1945 | 63.2 mm (2.5 in) |
| 1946 | 60.2 mm (2.4 in) |
| 1947 | 47.2 mm (1.9 in) |
| 1948 | 52.1 mm (2.1 in) |
| 1949 | 93.2 mm (3.7 in) |
| 1950 | 99.1 mm (3.9 in) |
| 1951 | 73.4 mm (2.9 in) |
| 1952 | 104.6 mm (4.1 in) |
| 1953 | 60.5 mm (2.4 in) |
| 1954 | 85.3 mm (3.4 in) |
| 1955 | 47.0 mm (1.9 in) |
| 1956 | 40.4 mm (1.6 in) |
| 1957 | 222.0 mm (8.7 in) |
| 1958 | 61.7 mm (2.4 in) |
| 1959 | 39.1 mm (1.5 in) |
| 1960 | 98.6 mm (3.9 in) |
| 1961 | 77.2 mm (3.0 in) |
| 1962 | 88.4 mm (3.5 in) |
| 1963 | 69.9 mm (2.8 in) |
| 1964 | 46.2 mm (1.8 in) |
| 1965 | 54.6 mm (2.1 in) |
| 1966 | 50.5 mm (2.0 in) |
| 1967 | 140.2 mm (5.5 in) |
| 1968 | 66.3 mm (2.6 in) |
| 1969 | 74.2 mm (2.9 in) |
| 1970 | 53.8 mm (2.1 in) |
| 1971 | 62.5 mm (2.5 in) |
| 1972 | 63.5 mm (2.5 in) |
| 1973 | 76.2 mm (3.0 in) |
| 1974 | 47.2 mm (1.9 in) |
| 1975 | 40.6 mm (1.6 in) |
| 1976 | 48.3 mm (1.9 in) |
| 1977 | 73.7 mm (2.9 in) |
| 1978 | 78.7 mm (3.1 in) |
| 1979 | 109.2 mm (4.3 in) |
| 1980 | 38.9 mm (1.5 in) |
| 1981 | 63.5 mm (2.5 in) |
| 1982 | 58.4 mm (2.3 in) |
| 1983 | 52.1 mm (2.1 in) |
| 1984 | 52.1 mm (2.1 in) |
| 1985 | 77.0 mm (3.0 in) |
| 1986 | 76.2 mm (3.0 in) |
| 1987 | 76.2 mm (3.0 in) |
| 1988 | 51.6 mm (2.0 in) |
| 1989 | 204.5 mm (8.1 in) |
| 1990 | 152.4 mm (6.0 in) |
| 1991 | 50.8 mm (2.0 in) |
| 1992 | 105.4 mm (4.1 in) |
| 1993 | 120.1 mm (4.7 in) |
| 1994 | 35.6 mm (1.4 in) |
| 1995 | 67.3 mm (2.6 in) |
| 1996 | 62.2 mm (2.4 in) |
| 1997 | 78.7 mm (3.1 in) |
| 1998 | 72.1 mm (2.8 in) |
| 1999 | 57.7 mm (2.3 in) |
| 2000 | 60.5 mm (2.4 in) |
| 2001 | 80.0 mm (3.1 in) |
| 2002 | 101.6 mm (4.0 in) |
| 2003 | 138.7 mm (5.5 in) |
| 2004 | 61.0 mm (2.4 in) |
| 2005 | 66.0 mm (2.6 in) |
| 2006 | 50.3 mm (2.0 in) |
| 2007 | 65.3 mm (2.6 in) |
| 2008 | 127.0 mm (5.0 in) |
| 2009 | 80.8 mm (3.2 in) |
| 2010 | 53.3 mm (2.1 in) |
| 2011 | 88.6 mm (3.5 in) |
| 2012 | 44.5 mm (1.8 in) |
| 2013 | 65.3 mm (2.6 in) |
| 2014 | 86.4 mm (3.4 in) |
| 2015 | 67.3 mm (2.6 in) |
| 2016 | 61.0 mm (2.4 in) |
| 2017 | 72.4 mm (2.9 in) |
| 2018 | 106.7 mm (4.2 in) |
| 2019 | 61.0 mm (2.4 in) |
| 2020 | 73.7 mm (2.9 in) |
| 2021 | 58.4 mm (2.3 in) |
| 2022 | 104.1 mm (4.1 in) |
| 2023 | 61.0 mm (2.4 in) |
| 2024 | 69.9 mm (2.8 in) |
| 2025 | 63.5 mm (2.5 in) |
| 2026 | 50.8 mm (2.0 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1893 | 103.4 mm (4.1 in) |
| 1894 | 63.5 mm (2.5 in) |
| 1895 | 83.5 mm (3.3 in) |
| 1896 | 136.0 mm (5.4 in) |
| 1897 | 82.1 mm (3.2 in) |
| 1898 | 88.5 mm (3.5 in) |
| 1899 | 77.5 mm (3.1 in) |
| 1900 | 107.3 mm (4.2 in) |
| 1901 | 97.6 mm (3.8 in) |
| 1902 | 103.8 mm (4.1 in) |
| 1903 | 106.9 mm (4.2 in) |
| 1904 | 76.4 mm (3.0 in) |
| 1905 | 90.7 mm (3.6 in) |
| 1906 | 106.4 mm (4.2 in) |
| 1907 | 67.5 mm (2.7 in) |
| 1908 | 107.4 mm (4.2 in) |
| 1909 | 81.5 mm (3.2 in) |
| 1910 | 197.3 mm (7.8 in) |
| 1911 | 89.9 mm (3.5 in) |
| 1912 | 81.8 mm (3.2 in) |
| 1913 | 178.4 mm (7.0 in) |
| 1914 | 80.3 mm (3.2 in) |
| 1915 | 99.8 mm (3.9 in) |
| 1916 | 113.1 mm (4.5 in) |
| 1917 | 106.4 mm (4.2 in) |
| 1918 | 96.0 mm (3.8 in) |
| 1919 | 136.9 mm (5.4 in) |
| 1920 | 99.1 mm (3.9 in) |
| 1921 | 124.5 mm (4.9 in) |
| 1922 | 99.9 mm (3.9 in) |
| 1923 | 113.3 mm (4.5 in) |
| 1924 | 108.0 mm (4.3 in) |
| 1925 | 87.2 mm (3.4 in) |
| 1926 | 102.6 mm (4.0 in) |
| 1927 | 121.1 mm (4.8 in) |
| 1928 | 106.7 mm (4.2 in) |
| 1929 | 82.5 mm (3.2 in) |
| 1930 | 88.3 mm (3.5 in) |
| 1931 | 108.8 mm (4.3 in) |
| 1932 | 100.3 mm (3.9 in) |
| 1933 | 130.9 mm (5.2 in) |
| 1934 | 70.4 mm (2.8 in) |
| 1935 | 152.4 mm (6.0 in) |
| 1936 | 77.0 mm (3.0 in) |
| 1937 | 92.4 mm (3.6 in) |
| 1938 | 98.3 mm (3.9 in) |
| 1939 | 101.6 mm (4.0 in) |
| 1940 | 57.6 mm (2.3 in) |
| 1941 | 116.6 mm (4.6 in) |
| 1942 | 105.6 mm (4.2 in) |
| 1943 | 181.4 mm (7.1 in) |
| 1944 | 99.8 mm (3.9 in) |
| 1945 | 116.0 mm (4.6 in) |
| 1946 | 72.7 mm (2.9 in) |
| 1947 | 72.9 mm (2.9 in) |
| 1948 | 70.9 mm (2.8 in) |
| 1949 | 100.6 mm (4.0 in) |
| 1950 | 136.9 mm (5.4 in) |
| 1951 | 86.3 mm (3.4 in) |
| 1952 | 111.7 mm (4.4 in) |
| 1953 | 96.1 mm (3.8 in) |
| 1954 | 145.6 mm (5.7 in) |
| 1955 | 79.3 mm (3.1 in) |
| 1956 | 96.3 mm (3.8 in) |
| 1957 | 260.3 mm (10.2 in) |
| 1958 | 140.2 mm (5.5 in) |
| 1959 | 65.0 mm (2.6 in) |
| 1960 | 196.9 mm (7.8 in) |
| 1961 | 137.4 mm (5.4 in) |
| 1962 | 88.4 mm (3.5 in) |
| 1963 | 83.8 mm (3.3 in) |
| 1964 | 128.7 mm (5.1 in) |
| 1965 | 64.8 mm (2.6 in) |
| 1966 | 130.5 mm (5.1 in) |
| 1967 | 151.1 mm (5.9 in) |
| 1968 | 146.1 mm (5.8 in) |
| 1969 | 96.3 mm (3.8 in) |
| 1970 | 67.3 mm (2.6 in) |
| 1971 | 98.2 mm (3.9 in) |
| 1972 | 95.5 mm (3.8 in) |
| 1973 | 129.8 mm (5.1 in) |
| 1974 | 104.9 mm (4.1 in) |
| 1975 | 89.0 mm (3.5 in) |
| 1976 | 67.3 mm (2.6 in) |
| 1977 | 76.7 mm (3.0 in) |
| 1978 | 127.5 mm (5.0 in) |
| 1979 | 148.6 mm (5.9 in) |
| 1980 | 81.6 mm (3.2 in) |
| 1981 | 108.5 mm (4.3 in) |
| 1982 | 109.2 mm (4.3 in) |
| 1983 | 115.0 mm (4.5 in) |
| 1984 | 88.5 mm (3.5 in) |
| 1985 | 157.0 mm (6.2 in) |
| 1986 | 170.5 mm (6.7 in) |
| 1987 | 90.2 mm (3.6 in) |
| 1988 | 85.7 mm (3.4 in) |
| 1989 | 225.3 mm (8.9 in) |
| 1990 | 152.4 mm (6.0 in) |
| 1991 | 93.2 mm (3.7 in) |
| 1992 | 163.9 mm (6.5 in) |
| 1993 | 158.1 mm (6.2 in) |
| 1994 | 79.3 mm (3.1 in) |
| 1995 | 101.8 mm (4.0 in) |
| 1996 | 118.1 mm (4.6 in) |
| 1997 | 153.6 mm (6.0 in) |
| 1998 | 120.5 mm (4.7 in) |
| 1999 | 80.0 mm (3.1 in) |
| 2000 | 79.6 mm (3.1 in) |
| 2001 | 145.7 mm (5.7 in) |
| 2002 | 116.4 mm (4.6 in) |
| 2003 | 174.4 mm (6.9 in) |
| 2004 | 86.6 mm (3.4 in) |
| 2005 | 163.5 mm (6.4 in) |
| 2006 | 81.8 mm (3.2 in) |
| 2007 | 86.9 mm (3.4 in) |
| 2008 | 252.7 mm (9.9 in) |
| 2009 | 80.8 mm (3.2 in) |
| 2010 | 102.8 mm (4.0 in) |
| 2011 | 118.8 mm (4.7 in) |
| 2012 | 71.9 mm (2.8 in) |
| 2013 | 53.1 mm (2.1 in) |
| 2014 | 7.3 mm (0.29 in) |
| 2015 | 122.2 mm (4.8 in) |
| 2016 | 106.0 mm (4.2 in) |
| 2017 | 126.8 mm (5.0 in) |
| 2018 | 172.2 mm (6.8 in) |
| 2019 | 86.4 mm (3.4 in) |
| 2020 | 110.0 mm (4.3 in) |
| 2021 | 110.5 mm (4.4 in) |
| 2022 | 165.1 mm (6.5 in) |
| 2023 | 72.9 mm (2.9 in) |
| 2024 | 84.9 mm (3.3 in) |
| 2025 | 104.3 mm (4.1 in) |
| 2026 | 144.5 mm (5.7 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1893 | 15 days |
| 1894 | 26 days |
| 1895 | 20 days |
| 1896 | 23 days |
| 1897 | 24 days |
| 1898 | 13 days |
| 1899 | 22 days |
| 1900 | 19 days |
| 1901 | 35 days |
| 1902 | 20 days |
| 1903 | 23 days |
| 1904 | 36 days |
| 1905 | 18 days |
| 1906 | 12 days |
| 1907 | 23 days |
| 1908 | 45 days |
| 1909 | 16 days |
| 1910 | 34 days |
| 1911 | 19 days |
| 1912 | 25 days |
| 1913 | 22 days |
| 1914 | 23 days |
| 1915 | 23 days |
| 1916 | 19 days |
| 1917 | 23 days |
| 1918 | 11 days |
| 1919 | 22 days |
| 1920 | 21 days |
| 1921 | 15 days |
| 1922 | 17 days |
| 1923 | 15 days |
| 1924 | 23 days |
| 1925 | 14 days |
| 1926 | 17 days |
| 1927 | 20 days |
| 1928 | 18 days |
| 1929 | 20 days |
| 1930 | 24 days |
| 1931 | 18 days |
| 1932 | 18 days |
| 1933 | 27 days |
| 1934 | 20 days |
| 1935 | 17 days |
| 1936 | 28 days |
| 1937 | 13 days |
| 1938 | 24 days |
| 1939 | 24 days |
| 1940 | 17 days |
| 1941 | 19 days |
| 1942 | 28 days |
| 1943 | 18 days |
| 1944 | 28 days |
| 1945 | 17 days |
| 1946 | 16 days |
| 1947 | 22 days |
| 1948 | 24 days |
| 1949 | 20 days |
| 1950 | 16 days |
| 1951 | 14 days |
| 1952 | 18 days |
| 1953 | 23 days |
| 1954 | 30 days |
| 1955 | 13 days |
| 1956 | 40 days |
| 1957 | 25 days |
| 1958 | 31 days |
| 1959 | 15 days |
| 1960 | 25 days |
| 1961 | 16 days |
| 1962 | 18 days |
| 1963 | 31 days |
| 1964 | 27 days |
| 1965 | 18 days |
| 1966 | 19 days |
| 1967 | 18 days |
| 1968 | 20 days |
| 1969 | 26 days |
| 1970 | 14 days |
| 1971 | 15 days |
| 1972 | 15 days |
| 1973 | 14 days |
| 1974 | 16 days |
| 1975 | 17 days |
| 1976 | 26 days |
| 1977 | 23 days |
| 1978 | 16 days |
| 1979 | 11 days |
| 1980 | 16 days |
| 1981 | 23 days |
| 1982 | 16 days |
| 1983 | 27 days |
| 1984 | 13 days |
| 1985 | 15 days |
| 1986 | 31 days |
| 1987 | 18 days |
| 1988 | 23 days |
| 1989 | 21 days |
| 1990 | 16 days |
| 1991 | 24 days |
| 1992 | 19 days |
| 1993 | 17 days |
| 1994 | 17 days |
| 1995 | 21 days |
| 1996 | 14 days |
| 1997 | 17 days |
| 1998 | 22 days |
| 1999 | 22 days |
| 2000 | 19 days |
| 2001 | 25 days |
| 2002 | 19 days |
| 2003 | 12 days |
| 2004 | 19 days |
| 2005 | 17 days |
| 2006 | 15 days |
| 2007 | 21 days |
| 2008 | 12 days |
| 2009 | 22 days |
| 2010 | 21 days |
| 2011 | 19 days |
| 2012 | 21 days |
| 2013 | 6 days |
| 2014 | 5 days |
| 2015 | 5 days |
| 2016 | 14 days |
| 2017 | 17 days |
| 2018 | 19 days |
| 2019 | 14 days |
| 2020 | 21 days |
| 2021 | 17 days |
| 2022 | 15 days |
| 2023 | 21 days |
| 2024 | 32 days |
| 2025 | 17 days |
| 2026 | 25 days |
Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.
Frost Dates and Growing Season
121 years with a frostAcross 121 years with a frost, the median last spring frost at Rockville falls on 23 April and the median first autumn frost on 16 October, which leaves a median of 176 days between them.
In 1990 to 2025 the median growing season was 177 days. That is 1 day more than in 1893 to 1923.
Fitted over all years, the growing season changes by -0.1 days per decade at this station.
| Measure | Median, all years | Earliest period (1893 to 1923) | Recent period (1990 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 23 April | 21 April | 22 April | 1 day later | -0.1 days per decade |
| First autumn frost | 16 October | 14 October | 15 October | 1 day later | -0.2 days per decade |
| Growing days | 176 days | 176 days | 177 days | 1 day more | -0.1 days per decade |
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Rainfall Return Levels
126 years, 1893 to 2025A day with at least 66.9 mm (2.6 in) of rain is expected about once in 2 years. A day with at least 169.5 mm (6.7 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 66.9 mm (2.6 in) | |
| 5 years | 89.6 mm (3.5 in) | |
| 10 years | 106.4 mm (4.2 in) | |
| 25 years | 129.8 mm (5.1 in) | |
| 50 years | 148.9 mm (5.9 in) | |
| 100 years | 169.5 mm (6.7 in) |
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 126 years of values from 1893 to 2025.
A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.
The largest wettest-day totals in the fit: 222.0 mm (8.7 in) in 1957; 204.5 mm (8.1 in) in 1989; 152.4 mm (6.0 in) in 1990.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Rockville, at 1963. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1963 ran 0.2 C (0.4 F) higher than in the years before (possible change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1963 | +0.2 | +0.4 | possible | 5 |
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Climate Twins
2006 to 2025 against 1961 to 1990Over 2006 to 2025, Rockville had a mean temperature of 12.2 C (54.0 F) and 1,129.5 mm (44.5 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Olney 2S (United States, 139 km away), 1 ENE Fairfield (United States, 180 km away) and Licking 4N (United States, 473 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Olney 2S | United States | 139 km (86 mi) | 12.5 C (54.5 F) | 1,086.8 mm (42.8 in) | 0.58 |
| 1 ENE Fairfield | United States | 180 km (112 mi) | 12.6 C (54.7 F) | 1,150.9 mm (45.3 in) | 0.61 |
| Licking 4N | United States | 473 km (294 mi) | 12.2 C (53.9 F) | 1,122.4 mm (44.2 in) | 0.62 |
Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.
Download the Data
Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-17).