Tucson WFO Weather Records (USC00028815)
Record envelope, standing records and threshold days for Tucson WFO (USC00028815), Arizona, United States, with 115 years of record.
Key Facts for Tucson WFO
- Tucson WFO (USC00028815) is a weather station in Arizona, United States at 32.23 latitude and -110.95 longitude, 742 m (2,435 ft) above sea level.
- The station reports from 1894 to 2008, 115 years of record.
- 1,464 records set at Tucson WFO still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Tucson WFO set a daily record high minimum temperature of 13.3 C (55.9 F) on 6 January 2008.
About the Station
- Location: Arizona, United States, 32.23 latitude, -110.95 longitude.
- Elevation: 742 m (2,435 ft).
- Period of record: 1894 to 2008, 115 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
0 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 32.2 C (90.0 F) | -14.4 C (6.1 F) | n/a | n/a |
| Feb | 33.9 C (93.0 F) | -8.3 C (17.1 F) | n/a | n/a |
| Mar | 36.7 C (98.1 F) | -5.6 C (21.9 F) | n/a | n/a |
| Apr | 40.0 C (104.0 F) | -2.2 C (28.0 F) | n/a | n/a |
| May | 43.9 C (111.0 F) | 0.0 C (32.0 F) | n/a | n/a |
| Jun | 46.1 C (115.0 F) | 6.1 C (43.0 F) | n/a | n/a |
| Jul | 46.1 C (115.0 F) | 9.4 C (48.9 F) | n/a | n/a |
| Aug | 44.4 C (111.9 F) | 12.8 C (55.0 F) | n/a | n/a |
| Sep | 44.4 C (111.9 F) | 5.6 C (42.1 F) | n/a | n/a |
| Oct | 40.0 C (104.0 F) | -1.7 C (28.9 F) | n/a | n/a |
| Nov | 34.4 C (93.9 F) | -7.2 C (19.0 F) | n/a | n/a |
| Dec | 31.1 C (88.0 F) | -12.2 C (10.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1894 | 3 |
| 1895 | 15 |
| 1896 | 13 |
| 1897 | 10 |
| 1898 | 14 |
| 1899 | 21 |
| 1900 | 15 |
| 1901 | 8 |
| 1902 | 10 |
| 1903 | 14 |
| 1904 | 7 |
| 1905 | 25 |
| 1906 | 19 |
| 1907 | 11 |
| 1908 | 15 |
| 1909 | 23 |
| 1910 | 19 |
| 1911 | 17 |
| 1912 | 21 |
| 1913 | 28 |
| 1914 | 5 |
| 1915 | 20 |
| 1916 | 15 |
| 1917 | 19 |
| 1918 | 14 |
| 1919 | 11 |
| 1920 | 15 |
| 1921 | 23 |
| 1922 | 15 |
| 1923 | 7 |
| 1924 | 12 |
| 1925 | 14 |
| 1926 | 5 |
| 1927 | 11 |
| 1928 | 8 |
| 1929 | 8 |
| 1930 | 13 |
| 1931 | 11 |
| 1932 | 9 |
| 1933 | 12 |
| 1934 | 16 |
| 1935 | 9 |
| 1936 | 8 |
| 1937 | 9 |
| 1938 | 7 |
| 1939 | 9 |
| 1940 | 8 |
| 1941 | 9 |
| 1942 | 4 |
| 1943 | 14 |
| 1944 | 7 |
| 1945 | 9 |
| 1946 | 11 |
| 1947 | 14 |
| 1948 | 18 |
| 1949 | 22 |
| 1950 | 32 |
| 1951 | 14 |
| 1952 | 11 |
| 1953 | 15 |
| 1954 | 7 |
| 1955 | 17 |
| 1956 | 5 |
| 1957 | 12 |
| 1958 | 9 |
| 1959 | 9 |
| 1960 | 8 |
| 1961 | 5 |
| 1962 | 15 |
| 1963 | 13 |
| 1964 | 8 |
| 1965 | 13 |
| 1966 | 7 |
| 1967 | 12 |
| 1968 | 10 |
| 1969 | 11 |
| 1970 | 9 |
| 1971 | 13 |
| 1972 | 11 |
| 1973 | 11 |
| 1974 | 13 |
| 1975 | 8 |
| 1976 | 6 |
| 1977 | 12 |
| 1978 | 12 |
| 1979 | 7 |
| 1980 | 16 |
| 1981 | 11 |
| 1982 | 4 |
| 1983 | 5 |
| 1984 | 8 |
| 1985 | 13 |
| 1986 | 16 |
| 1987 | 13 |
| 1988 | 12 |
| 1989 | 19 |
| 1990 | 15 |
| 1991 | 10 |
| 1992 | 20 |
| 1993 | 24 |
| 1994 | 61 |
| 1995 | 15 |
| 1996 | 19 |
| 1997 | 23 |
| 1998 | 5 |
| 1999 | 8 |
| 2000 | 11 |
| 2001 | 7 |
| 2002 | 5 |
| 2003 | 8 |
| 2004 | 15 |
| 2005 | 9 |
| 2006 | 14 |
| 2007 | 13 |
| 2008 | 1 |
All-Time Record Progression
10 new records| Date | Kind | Detail |
|---|---|---|
| 1925-07-06 | Record high minimum temperature | Record high minimum temperature 30.6 C (87.1 F) |
| 1935-08-01 | Record daily precipitation | Record daily precipitation 73.2 mm (2.9 in) |
| 1949-01-03 | Record low maximum temperature | Record low maximum temperature 1.7 C (35.1 F) |
| 1960-06-18 | Record high maximum temperature | Record high maximum temperature 45.0 C (113.0 F) |
| 1960-06-19 | Record high maximum temperature | Record high maximum temperature 46.1 C (115.0 F) |
| 1983-10-01 | Record daily precipitation | Record daily precipitation 105.7 mm (4.2 in) |
| 1990-06-27 | Record high minimum temperature | Record high minimum temperature 31.1 C (88.0 F) |
| 1993-07-29 | Record high minimum temperature | Record high minimum temperature 32.2 C (90.0 F) |
| 1994-06-27 | Record high minimum temperature | Record high minimum temperature 33.3 C (91.9 F) |
| 1994-06-28 | Record high minimum temperature | Record high minimum temperature 34.4 C (93.9 F) |
Wettest Day of Each Month
Oct: 105.7 mm (4.2 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 66.8 mm (2.6 in) | 19 January 1916 |
| Feb | 31.8 mm (1.3 in) | 25 February 1987 |
| Mar | 36.1 mm (1.4 in) | 25 March 1903 |
| Apr | 32.3 mm (1.3 in) | 15 April 1988 |
| May | 34.0 mm (1.3 in) | 15 May 1931 |
| Jun | 39.6 mm (1.6 in) | 28 June 1938 |
| Jul | 59.9 mm (2.4 in) | 30 July 1950 |
| Aug | 73.2 mm (2.9 in) | 1 August 1935 |
| Sep | 72.1 mm (2.8 in) | 26 September 1962 |
| Oct | 105.7 mm (4.2 in) | 1 October 1983 |
| Nov | 53.1 mm (2.1 in) | 22 November 1931 |
| Dec | 54.6 mm (2.1 in) | 3 December 1906 |
Period of Record Coverage
1894 to 2008| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1894 | 122 | 33% | No |
| 1895 | 362 | 99% | Yes |
| 1896 | 320 | 87% | No |
| 1897 | 361 | 99% | Yes |
| 1898 | 339 | 93% | Yes |
| 1899 | 365 | 100% | Yes |
| 1900 | 365 | 100% | Yes |
| 1901 | 350 | 96% | Yes |
| 1902 | 364 | 100% | Yes |
| 1903 | 362 | 99% | Yes |
| 1904 | 366 | 100% | Yes |
| 1905 | 365 | 100% | Yes |
| 1906 | 365 | 100% | Yes |
| 1907 | 365 | 100% | Yes |
| 1908 | 366 | 100% | Yes |
| 1909 | 365 | 100% | Yes |
| 1910 | 365 | 100% | Yes |
| 1911 | 364 | 100% | Yes |
| 1912 | 366 | 100% | Yes |
| 1913 | 365 | 100% | Yes |
| 1914 | 364 | 100% | Yes |
| 1915 | 335 | 92% | Yes |
| 1916 | 365 | 100% | Yes |
| 1917 | 364 | 100% | Yes |
| 1918 | 363 | 99% | Yes |
| 1919 | 365 | 100% | Yes |
| 1920 | 361 | 99% | Yes |
| 1921 | 365 | 100% | Yes |
| 1922 | 365 | 100% | Yes |
| 1923 | 365 | 100% | Yes |
| 1924 | 366 | 100% | Yes |
| 1925 | 363 | 99% | Yes |
| 1926 | 364 | 100% | Yes |
| 1927 | 362 | 99% | Yes |
| 1928 | 362 | 99% | Yes |
| 1929 | 365 | 100% | Yes |
| 1930 | 365 | 100% | Yes |
| 1931 | 365 | 100% | Yes |
| 1932 | 363 | 99% | Yes |
| 1933 | 364 | 100% | Yes |
| 1934 | 362 | 99% | Yes |
| 1935 | 363 | 99% | Yes |
| 1936 | 362 | 99% | Yes |
| 1937 | 361 | 99% | Yes |
| 1938 | 333 | 91% | Yes |
| 1939 | 363 | 99% | Yes |
| 1940 | 352 | 96% | Yes |
| 1941 | 365 | 100% | Yes |
| 1942 | 365 | 100% | Yes |
| 1943 | 352 | 96% | Yes |
| 1944 | 365 | 100% | Yes |
| 1945 | 357 | 98% | Yes |
| 1946 | 361 | 99% | Yes |
| 1947 | 358 | 98% | Yes |
| 1948 | 364 | 99% | Yes |
| 1949 | 365 | 100% | Yes |
| 1950 | 365 | 100% | Yes |
| 1951 | 365 | 100% | Yes |
| 1952 | 366 | 100% | Yes |
| 1953 | 365 | 100% | Yes |
| 1954 | 364 | 100% | Yes |
| 1955 | 365 | 100% | Yes |
| 1956 | 365 | 100% | Yes |
| 1957 | 365 | 100% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 364 | 100% | Yes |
| 1960 | 357 | 98% | Yes |
| 1961 | 360 | 99% | Yes |
| 1962 | 361 | 99% | Yes |
| 1963 | 356 | 98% | Yes |
| 1964 | 363 | 99% | Yes |
| 1965 | 299 | 82% | No |
| 1966 | 365 | 100% | Yes |
| 1967 | 362 | 99% | Yes |
| 1968 | 360 | 98% | Yes |
| 1969 | 359 | 98% | Yes |
| 1970 | 364 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 357 | 98% | Yes |
| 1975 | 358 | 98% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 365 | 100% | Yes |
| 1978 | 363 | 99% | Yes |
| 1979 | 365 | 100% | Yes |
| 1980 | 366 | 100% | Yes |
| 1981 | 365 | 100% | Yes |
| 1982 | 365 | 100% | Yes |
| 1983 | 365 | 100% | Yes |
| 1984 | 366 | 100% | Yes |
| 1985 | 365 | 100% | Yes |
| 1986 | 365 | 100% | Yes |
| 1987 | 362 | 99% | Yes |
| 1988 | 365 | 100% | Yes |
| 1989 | 365 | 100% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 364 | 100% | Yes |
| 1992 | 366 | 100% | Yes |
| 1993 | 363 | 99% | Yes |
| 1994 | 363 | 99% | Yes |
| 1995 | 365 | 100% | Yes |
| 1996 | 364 | 99% | Yes |
| 1997 | 244 | 67% | No |
| 1998 | 355 | 97% | Yes |
| 1999 | 354 | 97% | Yes |
| 2000 | 360 | 98% | Yes |
| 2001 | 363 | 99% | Yes |
| 2002 | 365 | 100% | Yes |
| 2003 | 363 | 99% | Yes |
| 2004 | 366 | 100% | Yes |
| 2005 | 365 | 100% | Yes |
| 2006 | 365 | 100% | Yes |
| 2007 | 333 | 91% | Yes |
| 2008 | 62 | 17% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 6 January 2008 | Tucson WFO, US | daily high min | 13.3 C (55.9 F) | 1.6 C (2.9 F) | 1 year | 13 of 100 (Routine) |
| 7 December 2007 | Tucson WFO, US | daily high min | 15.0 C (59.0 F) | 1.7 C (3.1 F) | 88 years | 39 of 100 (Notable) |
| 30 November 2007 | Tucson WFO, US | daily rain | 30.5 mm (1.2 in) | 11.7 mm (0.5 in) | 24 years | 31 of 100 (Routine) |
| 29 November 2007 | Tucson WFO, US | daily high min | 13.9 C (57.0 F) | 1.1 C (2.0 F) | 44 years | 25 of 100 (Routine) |
| 22 November 2007 | Tucson WFO, US | daily high min | 16.1 C (61.0 F) | 0.5 C (0.9 F) | 13 years | 15 of 100 (Routine) |
| 19 November 2007 | Tucson WFO, US | daily high max (Tie) | 30.6 C (87.1 F) | tie | 109 years | 10 of 100 (Routine) |
| 15 November 2007 | Tucson WFO, US | daily high min (Tie) | 16.1 C (61.0 F) | tie | 20 years | 4 of 100 (Routine) |
| 7 November 2007 | Tucson WFO, US | daily high max (Tie) | 31.7 C (89.1 F) | tie | 72 years | 7 of 100 (Routine) |
| 29 October 2007 | Tucson WFO, US | daily high min (Tie) | 20.0 C (68.0 F) | tie | 20 years | 4 of 100 (Routine) |
| 25 October 2007 | Tucson WFO, US | daily high min (Tie) | 18.9 C (66.0 F) | tie | 18 years | 3 of 100 (Routine) |
| 6 October 2007 | Tucson WFO, US | daily low max | 23.3 C (73.9 F) | 0.6 C (1.1 F) | 60 years | 29 of 100 (Routine) |
| 11 September 2007 | Tucson WFO, US | daily high min | 27.2 C (81.0 F) | 0.5 C (0.9 F) | 38 years | 22 of 100 (Routine) |
| 30 August 2007 | Tucson WFO, US | daily high min | 28.3 C (82.9 F) | 1.6 C (2.9 F) | 77 years | 39 of 100 (Notable) |
| 19 August 2007 | Tucson WFO, US | daily high min (Tie) | 27.8 C (82.0 F) | tie | 104 years | 10 of 100 (Routine) |
| 6 August 2007 | Tucson WFO, US | daily low max | 27.2 C (81.0 F) | 2.8 C (5.0 F) | 88 years | 45 of 100 (Notable) |
| 31 July 2007 | Tucson WFO, US | daily rain | 36.6 mm (1.4 in) | 0.3 mm (0.01 in) | 85 years | 35 of 100 (Notable) |
| 5 July 2007 | Tucson WFO, US | daily high min | 30.6 C (87.1 F) | 0.6 C (1.1 F) | 12 years | 15 of 100 (Routine) |
| 8 April 2007 | Tucson WFO, US | daily high min (Tie) | 18.9 C (66.0 F) | tie | 21 years | 4 of 100 (Routine) |
| 6 April 2007 | Tucson WFO, US | daily high min (Tie) | 17.2 C (63.0 F) | tie | 76 years | 8 of 100 (Routine) |
| 21 March 2007 | Tucson WFO, US | daily high min | 17.8 C (64.0 F) | 1.1 C (2.0 F) | 32 years | 21 of 100 (Routine) |
Climate Trend
106 complete years, 1895 to 2006| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1895 | 19.6 C | -0.73 C |
| 1897 | 19.3 C | -1.03 C |
| 1899 | 19.1 C | -1.30 C |
| 1900 | 19.8 C | -0.56 C |
| 1901 | 19.6 C | -0.77 C |
| 1902 | 19.4 C | -0.98 C |
| 1903 | 18.9 C | -1.52 C |
| 1904 | 19.3 C | -1.12 C |
| 1905 | 18.3 C | -2.06 C |
| 1906 | 19.4 C | -0.96 C |
| 1907 | 19.6 C | -0.76 C |
| 1908 | 18.8 C | -1.56 C |
| 1909 | 18.7 C | -1.63 C |
| 1910 | 20.3 C | -0.06 C |
| 1911 | 19.3 C | -1.07 C |
| 1912 | 18.3 C | -2.03 C |
| 1913 | 18.5 C | -1.92 C |
| 1914 | 19.7 C | -0.63 C |
| 1916 | 19.3 C | -1.12 C |
| 1917 | 19.1 C | -1.30 C |
| 1918 | 19.6 C | -0.78 C |
| 1919 | 18.7 C | -1.70 C |
| 1920 | 18.6 C | -1.75 C |
| 1921 | 19.4 C | -0.96 C |
| 1922 | 19.2 C | -1.14 C |
| 1923 | 19.0 C | -1.39 C |
| 1924 | 19.6 C | -0.77 C |
| 1925 | 19.7 C | -0.64 C |
| 1926 | 19.9 C | -0.49 C |
| 1927 | 20.0 C | -0.39 C |
| 1928 | 19.9 C | -0.48 C |
| 1929 | 19.1 C | -1.24 C |
| 1930 | 19.6 C | -0.77 C |
| 1931 | 19.5 C | -0.84 C |
| 1932 | 19.1 C | -1.27 C |
| 1933 | 19.3 C | -1.06 C |
| 1934 | 20.5 C | +0.14 C |
| 1935 | 19.2 C | -1.21 C |
| 1936 | 19.9 C | -0.45 C |
| 1937 | 19.6 C | -0.75 C |
| 1939 | 20.0 C | -0.36 C |
| 1940 | 20.3 C | -0.10 C |
| 1941 | 19.5 C | -0.86 C |
| 1942 | 19.5 C | -0.83 C |
| 1943 | 20.1 C | -0.31 C |
| 1944 | 19.5 C | -0.88 C |
| 1945 | 19.2 C | -1.20 C |
| 1946 | 19.4 C | -0.96 C |
| 1947 | 19.7 C | -0.67 C |
| 1948 | 20.3 C | -0.10 C |
| 1949 | 20.0 C | -0.34 C |
| 1950 | 20.9 C | +0.56 C |
| 1951 | 20.6 C | +0.24 C |
| 1952 | 20.6 C | +0.18 C |
| 1953 | 20.6 C | +0.20 C |
| 1954 | 21.0 C | +0.67 C |
| 1955 | 19.4 C | -0.97 C |
| 1956 | 20.8 C | +0.38 C |
| 1957 | 20.9 C | +0.55 C |
| 1958 | 20.9 C | +0.57 C |
| 1959 | 21.0 C | +0.63 C |
| 1960 | 20.9 C | +0.52 C |
| 1961 | 20.6 C | +0.24 C |
| 1962 | 20.8 C | +0.39 C |
| 1963 | 20.4 C | +0.05 C |
| 1964 | 19.3 C | -1.09 C |
| 1966 | 20.2 C | -0.22 C |
| 1967 | 20.3 C | -0.10 C |
| 1968 | 20.9 C | +0.56 C |
| 1969 | 21.4 C | +1.01 C |
| 1970 | 20.7 C | +0.33 C |
| 1971 | 20.1 C | -0.23 C |
| 1972 | 21.3 C | +0.91 C |
| 1973 | 21.1 C | +0.75 C |
| 1974 | 21.2 C | +0.79 C |
| 1975 | 20.6 C | +0.27 C |
| 1976 | 21.3 C | +0.89 C |
| 1977 | 21.7 C | +1.37 C |
| 1978 | 21.6 C | +1.25 C |
| 1979 | 21.2 C | +0.78 C |
| 1980 | 22.3 C | +1.88 C |
| 1981 | 22.3 C | +1.93 C |
| 1982 | 21.1 C | +0.76 C |
| 1983 | 21.0 C | +0.60 C |
| 1984 | 21.0 C | +0.59 C |
| 1985 | 21.4 C | +1.01 C |
| 1986 | 22.0 C | +1.62 C |
| 1987 | 21.6 C | +1.25 C |
| 1988 | 22.0 C | +1.60 C |
| 1989 | 22.6 C | +2.25 C |
| 1990 | 21.2 C | +0.87 C |
| 1991 | 21.4 C | +1.06 C |
| 1992 | 22.1 C | +1.77 C |
| 1993 | 22.8 C | +2.44 C |
| 1994 | 23.0 C | +2.67 C |
| 1995 | 22.6 C | +2.24 C |
| 1996 | 22.6 C | +2.18 C |
| 1998 | 20.2 C | -0.16 C |
| 1999 | 21.0 C | +0.66 C |
| 2000 | 21.5 C | +1.11 C |
| 2001 | 21.5 C | +1.10 C |
| 2002 | 21.6 C | +1.23 C |
| 2003 | 22.0 C | +1.62 C |
| 2004 | 21.3 C | +0.91 C |
| 2005 | 22.0 C | +1.60 C |
| 2006 | 21.7 C | +1.35 C |
The annual mean temperature here has risen by 0.3 C (0.3 to 0.3) per decade over 1895 to 2006. In Fahrenheit: 0.5 F (0.5 to 0.6) per decade. The slope is a straight line fitted to 106 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.3 C (0.3 to 0.3) per decade | 0.5 F (0.5 to 0.6) per decade | 1895 to 2006 | 106 | Rise |
| Mean daily maximum | 0.09 C (0.04 to 0.13) per decade | 0.2 F (0.1 to 0.2) per decade | 1895 to 2006 | 106 | Rise |
| Mean daily minimum | 0.5 C (0.5 to 0.6) per decade | 0.9 F (0.8 to 1.0) per decade | 1895 to 2006 | 106 | 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
1894 to 2008| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 46.1 C (115.0 F) | 1960 | 43.3 C (109.9 F) | 115 |
| Coldest night (TNn) | -14.4 C (6.1 F) | 1913 | -5.0 C (23.0 F) | 115 |
| Wettest day (Rx1day) | 105.7 mm (4.2 in) | 1983 | 35.6 mm (1.4 in) | 115 |
| Wettest five days (Rx5day) | 186.0 mm (7.3 in) | 1983 | 48.3 mm (1.9 in) | 115 |
| Longest dry spell (CDD) | 149 days | 1972 | 69 days | 115 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1894 | 38.9 C (102.0 F) |
| 1895 | 42.2 C (108.0 F) |
| 1896 | 43.3 C (109.9 F) |
| 1897 | 40.6 C (105.1 F) |
| 1898 | 42.2 C (108.0 F) |
| 1899 | 41.7 C (107.1 F) |
| 1900 | 42.2 C (108.0 F) |
| 1901 | 42.2 C (108.0 F) |
| 1902 | 44.4 C (111.9 F) |
| 1903 | 42.2 C (108.0 F) |
| 1904 | 41.7 C (107.1 F) |
| 1905 | 41.7 C (107.1 F) |
| 1906 | 42.2 C (108.0 F) |
| 1907 | 43.9 C (111.0 F) |
| 1908 | 42.2 C (108.0 F) |
| 1909 | 42.2 C (108.0 F) |
| 1910 | 43.9 C (111.0 F) |
| 1911 | 41.7 C (107.1 F) |
| 1912 | 42.2 C (108.0 F) |
| 1913 | 42.8 C (109.0 F) |
| 1914 | 41.7 C (107.1 F) |
| 1915 | 43.3 C (109.9 F) |
| 1916 | 41.7 C (107.1 F) |
| 1917 | 43.3 C (109.9 F) |
| 1918 | 43.3 C (109.9 F) |
| 1919 | 43.9 C (111.0 F) |
| 1920 | 43.9 C (111.0 F) |
| 1921 | 42.8 C (109.0 F) |
| 1922 | 43.9 C (111.0 F) |
| 1923 | 43.3 C (109.9 F) |
| 1924 | 43.3 C (109.9 F) |
| 1925 | 42.8 C (109.0 F) |
| 1926 | 42.8 C (109.0 F) |
| 1927 | 42.2 C (108.0 F) |
| 1928 | 41.7 C (107.1 F) |
| 1929 | 43.9 C (111.0 F) |
| 1930 | 43.3 C (109.9 F) |
| 1931 | 42.2 C (108.0 F) |
| 1932 | 43.3 C (109.9 F) |
| 1933 | 43.9 C (111.0 F) |
| 1934 | 42.8 C (109.0 F) |
| 1935 | 41.1 C (106.0 F) |
| 1936 | 43.9 C (111.0 F) |
| 1937 | 43.3 C (109.9 F) |
| 1938 | 42.2 C (108.0 F) |
| 1939 | 41.7 C (107.1 F) |
| 1940 | 42.8 C (109.0 F) |
| 1941 | 42.2 C (108.0 F) |
| 1942 | 43.3 C (109.9 F) |
| 1943 | 43.3 C (109.9 F) |
| 1944 | 44.4 C (111.9 F) |
| 1945 | 43.3 C (109.9 F) |
| 1946 | 42.2 C (108.0 F) |
| 1947 | 43.9 C (111.0 F) |
| 1948 | 43.9 C (111.0 F) |
| 1949 | 43.3 C (109.9 F) |
| 1950 | 44.4 C (111.9 F) |
| 1951 | 42.8 C (109.0 F) |
| 1952 | 43.3 C (109.9 F) |
| 1953 | 44.4 C (111.9 F) |
| 1954 | 42.8 C (109.0 F) |
| 1955 | 43.3 C (109.9 F) |
| 1956 | 43.3 C (109.9 F) |
| 1957 | 43.9 C (111.0 F) |
| 1958 | 44.4 C (111.9 F) |
| 1959 | 42.8 C (109.0 F) |
| 1960 | 46.1 C (115.0 F) |
| 1961 | 42.2 C (108.0 F) |
| 1962 | 43.3 C (109.9 F) |
| 1963 | 43.3 C (109.9 F) |
| 1964 | 43.9 C (111.0 F) |
| 1965 | 43.9 C (111.0 F) |
| 1966 | 43.3 C (109.9 F) |
| 1967 | 42.2 C (108.0 F) |
| 1968 | 45.6 C (114.1 F) |
| 1969 | 43.3 C (109.9 F) |
| 1970 | 43.9 C (111.0 F) |
| 1971 | 42.2 C (108.0 F) |
| 1972 | 42.8 C (109.0 F) |
| 1973 | 43.3 C (109.9 F) |
| 1974 | 44.4 C (111.9 F) |
| 1975 | 43.3 C (109.9 F) |
| 1976 | 42.8 C (109.0 F) |
| 1977 | 42.2 C (108.0 F) |
| 1978 | 43.3 C (109.9 F) |
| 1979 | 43.3 C (109.9 F) |
| 1980 | 43.9 C (111.0 F) |
| 1981 | 41.7 C (107.1 F) |
| 1982 | 40.6 C (105.1 F) |
| 1983 | 44.4 C (111.9 F) |
| 1984 | 41.7 C (107.1 F) |
| 1985 | 43.9 C (111.0 F) |
| 1986 | 42.2 C (108.0 F) |
| 1987 | 41.7 C (107.1 F) |
| 1988 | 43.9 C (111.0 F) |
| 1989 | 44.4 C (111.9 F) |
| 1990 | 46.1 C (115.0 F) |
| 1991 | 42.2 C (108.0 F) |
| 1992 | 43.9 C (111.0 F) |
| 1993 | 45.0 C (113.0 F) |
| 1994 | 45.6 C (114.1 F) |
| 1995 | 46.1 C (115.0 F) |
| 1996 | 43.3 C (109.9 F) |
| 1997 | 45.0 C (113.0 F) |
| 1998 | 42.8 C (109.0 F) |
| 1999 | 40.6 C (105.1 F) |
| 2000 | 41.7 C (107.1 F) |
| 2001 | 42.8 C (109.0 F) |
| 2002 | 42.8 C (109.0 F) |
| 2003 | 42.8 C (109.0 F) |
| 2004 | 41.7 C (107.1 F) |
| 2005 | 42.8 C (109.0 F) |
| 2006 | 42.8 C (109.0 F) |
| 2007 | 42.8 C (109.0 F) |
| 2008 | 30.0 C (86.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1894 | -1.1 C (30.0 F) |
| 1895 | -10.0 C (14.0 F) |
| 1896 | -5.0 C (23.0 F) |
| 1897 | -8.9 C (16.0 F) |
| 1898 | -8.3 C (17.1 F) |
| 1899 | -8.3 C (17.1 F) |
| 1900 | -3.9 C (25.0 F) |
| 1901 | -12.2 C (10.0 F) |
| 1902 | -4.4 C (24.1 F) |
| 1903 | -6.1 C (21.0 F) |
| 1904 | -9.4 C (15.1 F) |
| 1905 | -11.7 C (10.9 F) |
| 1906 | -5.6 C (21.9 F) |
| 1907 | -6.7 C (19.9 F) |
| 1908 | -5.6 C (21.9 F) |
| 1909 | -8.3 C (17.1 F) |
| 1910 | -9.4 C (15.1 F) |
| 1911 | -8.9 C (16.0 F) |
| 1912 | -7.8 C (18.0 F) |
| 1913 | -14.4 C (6.1 F) |
| 1914 | -5.6 C (21.9 F) |
| 1915 | -7.2 C (19.0 F) |
| 1916 | -9.4 C (15.1 F) |
| 1917 | -5.6 C (21.9 F) |
| 1918 | -7.8 C (18.0 F) |
| 1919 | -6.7 C (19.9 F) |
| 1920 | -7.2 C (19.0 F) |
| 1921 | -7.2 C (19.0 F) |
| 1922 | -8.3 C (17.1 F) |
| 1923 | -7.2 C (19.0 F) |
| 1924 | -4.4 C (24.1 F) |
| 1925 | -7.8 C (18.0 F) |
| 1926 | -4.4 C (24.1 F) |
| 1927 | -4.4 C (24.1 F) |
| 1928 | -5.6 C (21.9 F) |
| 1929 | -5.6 C (21.9 F) |
| 1930 | -6.7 C (19.9 F) |
| 1931 | -5.0 C (23.0 F) |
| 1932 | -7.2 C (19.0 F) |
| 1933 | -7.8 C (18.0 F) |
| 1934 | -6.1 C (21.0 F) |
| 1935 | -6.1 C (21.0 F) |
| 1936 | -5.6 C (21.9 F) |
| 1937 | -9.4 C (15.1 F) |
| 1938 | -3.3 C (26.1 F) |
| 1939 | -4.4 C (24.1 F) |
| 1940 | -5.6 C (21.9 F) |
| 1941 | -3.3 C (26.1 F) |
| 1942 | -3.9 C (25.0 F) |
| 1943 | -5.0 C (23.0 F) |
| 1944 | -5.6 C (21.9 F) |
| 1945 | -7.2 C (19.0 F) |
| 1946 | -6.7 C (19.9 F) |
| 1947 | -5.6 C (21.9 F) |
| 1948 | -6.7 C (19.9 F) |
| 1949 | -8.9 C (16.0 F) |
| 1950 | -7.8 C (18.0 F) |
| 1951 | -3.9 C (25.0 F) |
| 1952 | -5.0 C (23.0 F) |
| 1953 | -5.6 C (21.9 F) |
| 1954 | -7.8 C (18.0 F) |
| 1955 | -7.2 C (19.0 F) |
| 1956 | -4.4 C (24.1 F) |
| 1957 | -2.2 C (28.0 F) |
| 1958 | -3.3 C (26.1 F) |
| 1959 | -2.2 C (28.0 F) |
| 1960 | -6.1 C (21.0 F) |
| 1961 | -1.7 C (28.9 F) |
| 1962 | -6.7 C (19.9 F) |
| 1963 | -7.2 C (19.0 F) |
| 1964 | -8.9 C (16.0 F) |
| 1965 | -6.1 C (21.0 F) |
| 1966 | -6.7 C (19.9 F) |
| 1967 | -6.7 C (19.9 F) |
| 1968 | -5.6 C (21.9 F) |
| 1969 | -2.2 C (28.0 F) |
| 1970 | -3.9 C (25.0 F) |
| 1971 | -7.2 C (19.0 F) |
| 1972 | -3.3 C (26.1 F) |
| 1973 | -1.1 C (30.0 F) |
| 1974 | -3.3 C (26.1 F) |
| 1975 | -1.1 C (30.0 F) |
| 1976 | -2.8 C (27.0 F) |
| 1977 | -1.1 C (30.0 F) |
| 1978 | -5.6 C (21.9 F) |
| 1979 | -3.9 C (25.0 F) |
| 1980 | 1.7 C (35.1 F) |
| 1981 | 0.0 C (32.0 F) |
| 1982 | 0.0 C (32.0 F) |
| 1983 | 0.0 C (32.0 F) |
| 1984 | -1.1 C (30.0 F) |
| 1985 | -2.2 C (28.0 F) |
| 1986 | 1.1 C (34.0 F) |
| 1987 | -3.3 C (26.1 F) |
| 1988 | -3.3 C (26.1 F) |
| 1989 | -2.2 C (28.0 F) |
| 1990 | -3.9 C (25.0 F) |
| 1991 | 0.0 C (32.0 F) |
| 1992 | -0.6 C (30.9 F) |
| 1993 | 1.1 C (34.0 F) |
| 1994 | 0.6 C (33.1 F) |
| 1995 | 0.6 C (33.1 F) |
| 1996 | -1.1 C (30.0 F) |
| 1997 | -1.1 C (30.0 F) |
| 1998 | -2.2 C (28.0 F) |
| 1999 | -1.7 C (28.9 F) |
| 2000 | -1.1 C (30.0 F) |
| 2001 | -0.6 C (30.9 F) |
| 2002 | -1.7 C (28.9 F) |
| 2003 | -3.3 C (26.1 F) |
| 2004 | -1.1 C (30.0 F) |
| 2005 | -1.1 C (30.0 F) |
| 2006 | -1.7 C (28.9 F) |
| 2007 | -2.8 C (27.0 F) |
| 2008 | -1.1 C (30.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1894 | 16.5 mm (0.6 in) |
| 1895 | 46.5 mm (1.8 in) |
| 1896 | 24.6 mm (1.0 in) |
| 1897 | 38.6 mm (1.5 in) |
| 1898 | 50.5 mm (2.0 in) |
| 1899 | 16.8 mm (0.7 in) |
| 1900 | 32.3 mm (1.3 in) |
| 1901 | 20.1 mm (0.8 in) |
| 1902 | 41.7 mm (1.6 in) |
| 1903 | 36.1 mm (1.4 in) |
| 1904 | 23.9 mm (0.9 in) |
| 1905 | 29.7 mm (1.2 in) |
| 1906 | 54.6 mm (2.1 in) |
| 1907 | 47.0 mm (1.9 in) |
| 1908 | 46.7 mm (1.8 in) |
| 1909 | 26.9 mm (1.1 in) |
| 1910 | 46.2 mm (1.8 in) |
| 1911 | 33.0 mm (1.3 in) |
| 1912 | 30.5 mm (1.2 in) |
| 1913 | 19.1 mm (0.8 in) |
| 1914 | 34.3 mm (1.4 in) |
| 1915 | 35.6 mm (1.4 in) |
| 1916 | 66.8 mm (2.6 in) |
| 1917 | 35.6 mm (1.4 in) |
| 1918 | 18.8 mm (0.7 in) |
| 1919 | 48.3 mm (1.9 in) |
| 1920 | 26.7 mm (1.1 in) |
| 1921 | 53.8 mm (2.1 in) |
| 1922 | 25.9 mm (1.0 in) |
| 1923 | 63.0 mm (2.5 in) |
| 1924 | 15.5 mm (0.6 in) |
| 1925 | 27.7 mm (1.1 in) |
| 1926 | 35.1 mm (1.4 in) |
| 1927 | 33.0 mm (1.3 in) |
| 1928 | 18.0 mm (0.7 in) |
| 1929 | 47.8 mm (1.9 in) |
| 1930 | 31.2 mm (1.2 in) |
| 1931 | 53.1 mm (2.1 in) |
| 1932 | 23.9 mm (0.9 in) |
| 1933 | 36.8 mm (1.4 in) |
| 1934 | 23.4 mm (0.9 in) |
| 1935 | 73.2 mm (2.9 in) |
| 1936 | 50.8 mm (2.0 in) |
| 1937 | 22.1 mm (0.9 in) |
| 1938 | 39.6 mm (1.6 in) |
| 1939 | 30.0 mm (1.2 in) |
| 1940 | 57.2 mm (2.3 in) |
| 1941 | 36.8 mm (1.4 in) |
| 1942 | 30.2 mm (1.2 in) |
| 1943 | 54.6 mm (2.1 in) |
| 1944 | 38.6 mm (1.5 in) |
| 1945 | 40.4 mm (1.6 in) |
| 1946 | 37.3 mm (1.5 in) |
| 1947 | 16.0 mm (0.6 in) |
| 1948 | 15.2 mm (0.6 in) |
| 1949 | 17.5 mm (0.7 in) |
| 1950 | 59.9 mm (2.4 in) |
| 1951 | 41.1 mm (1.6 in) |
| 1952 | 29.7 mm (1.2 in) |
| 1953 | 39.4 mm (1.6 in) |
| 1954 | 40.4 mm (1.6 in) |
| 1955 | 39.9 mm (1.6 in) |
| 1956 | 20.8 mm (0.8 in) |
| 1957 | 18.8 mm (0.7 in) |
| 1958 | 37.1 mm (1.5 in) |
| 1959 | 53.3 mm (2.1 in) |
| 1960 | 25.4 mm (1.0 in) |
| 1961 | 38.9 mm (1.5 in) |
| 1962 | 72.1 mm (2.8 in) |
| 1963 | 35.1 mm (1.4 in) |
| 1964 | 34.3 mm (1.4 in) |
| 1965 | 27.2 mm (1.1 in) |
| 1966 | 39.1 mm (1.5 in) |
| 1967 | 50.0 mm (2.0 in) |
| 1968 | 38.4 mm (1.5 in) |
| 1969 | 14.7 mm (0.6 in) |
| 1970 | 39.9 mm (1.6 in) |
| 1971 | 28.7 mm (1.1 in) |
| 1972 | 46.2 mm (1.8 in) |
| 1973 | 29.2 mm (1.1 in) |
| 1974 | 48.3 mm (1.9 in) |
| 1975 | 30.5 mm (1.2 in) |
| 1976 | 16.5 mm (0.6 in) |
| 1977 | 31.5 mm (1.2 in) |
| 1978 | 41.9 mm (1.6 in) |
| 1979 | 28.4 mm (1.1 in) |
| 1980 | 38.9 mm (1.5 in) |
| 1981 | 22.1 mm (0.9 in) |
| 1982 | 39.1 mm (1.5 in) |
| 1983 | 105.7 mm (4.2 in) |
| 1984 | 51.1 mm (2.0 in) |
| 1985 | 29.5 mm (1.2 in) |
| 1986 | 41.1 mm (1.6 in) |
| 1987 | 31.8 mm (1.3 in) |
| 1988 | 32.3 mm (1.3 in) |
| 1989 | 31.8 mm (1.3 in) |
| 1990 | 37.3 mm (1.5 in) |
| 1991 | 50.3 mm (2.0 in) |
| 1992 | 29.5 mm (1.2 in) |
| 1993 | 38.4 mm (1.5 in) |
| 1994 | 46.5 mm (1.8 in) |
| 1995 | 57.2 mm (2.3 in) |
| 1996 | 40.6 mm (1.6 in) |
| 1997 | 12.7 mm (0.5 in) |
| 1998 | 39.1 mm (1.5 in) |
| 1999 | 24.1 mm (0.9 in) |
| 2000 | 37.6 mm (1.5 in) |
| 2001 | 22.1 mm (0.9 in) |
| 2002 | 20.8 mm (0.8 in) |
| 2003 | 34.3 mm (1.4 in) |
| 2004 | 22.6 mm (0.9 in) |
| 2005 | 37.6 mm (1.5 in) |
| 2006 | 51.1 mm (2.0 in) |
| 2007 | 36.6 mm (1.4 in) |
| 2008 | 11.9 mm (0.5 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1894 | 19.5 mm (0.8 in) |
| 1895 | 71.9 mm (2.8 in) |
| 1896 | 39.9 mm (1.6 in) |
| 1897 | 44.9 mm (1.8 in) |
| 1898 | 65.3 mm (2.6 in) |
| 1899 | 27.6 mm (1.1 in) |
| 1900 | 62.2 mm (2.4 in) |
| 1901 | 40.9 mm (1.6 in) |
| 1902 | 46.5 mm (1.8 in) |
| 1903 | 40.2 mm (1.6 in) |
| 1904 | 40.6 mm (1.6 in) |
| 1905 | 52.5 mm (2.1 in) |
| 1906 | 82.0 mm (3.2 in) |
| 1907 | 49.0 mm (1.9 in) |
| 1908 | 61.6 mm (2.4 in) |
| 1909 | 53.9 mm (2.1 in) |
| 1910 | 80.5 mm (3.2 in) |
| 1911 | 48.8 mm (1.9 in) |
| 1912 | 45.6 mm (1.8 in) |
| 1913 | 31.8 mm (1.3 in) |
| 1914 | 97.8 mm (3.9 in) |
| 1915 | 39.5 mm (1.6 in) |
| 1916 | 84.9 mm (3.3 in) |
| 1917 | 40.9 mm (1.6 in) |
| 1918 | 27.2 mm (1.1 in) |
| 1919 | 80.6 mm (3.2 in) |
| 1920 | 34.6 mm (1.4 in) |
| 1921 | 85.7 mm (3.4 in) |
| 1922 | 33.0 mm (1.3 in) |
| 1923 | 71.4 mm (2.8 in) |
| 1924 | 27.2 mm (1.1 in) |
| 1925 | 64.1 mm (2.5 in) |
| 1926 | 35.4 mm (1.4 in) |
| 1927 | 38.8 mm (1.5 in) |
| 1928 | 43.1 mm (1.7 in) |
| 1929 | 88.7 mm (3.5 in) |
| 1930 | 53.4 mm (2.1 in) |
| 1931 | 54.9 mm (2.2 in) |
| 1932 | 43.0 mm (1.7 in) |
| 1933 | 48.3 mm (1.9 in) |
| 1934 | 35.1 mm (1.4 in) |
| 1935 | 77.5 mm (3.1 in) |
| 1936 | 53.6 mm (2.1 in) |
| 1937 | 29.3 mm (1.2 in) |
| 1938 | 52.5 mm (2.1 in) |
| 1939 | 34.8 mm (1.4 in) |
| 1940 | 57.8 mm (2.3 in) |
| 1941 | 45.2 mm (1.8 in) |
| 1942 | 39.9 mm (1.6 in) |
| 1943 | 77.2 mm (3.0 in) |
| 1944 | 40.9 mm (1.6 in) |
| 1945 | 46.1 mm (1.8 in) |
| 1946 | 52.6 mm (2.1 in) |
| 1947 | 21.1 mm (0.8 in) |
| 1948 | 23.8 mm (0.9 in) |
| 1949 | 18.6 mm (0.7 in) |
| 1950 | 59.9 mm (2.4 in) |
| 1951 | 41.6 mm (1.6 in) |
| 1952 | 35.0 mm (1.4 in) |
| 1953 | 77.3 mm (3.0 in) |
| 1954 | 58.2 mm (2.3 in) |
| 1955 | 52.4 mm (2.1 in) |
| 1956 | 21.6 mm (0.9 in) |
| 1957 | 28.2 mm (1.1 in) |
| 1958 | 47.2 mm (1.9 in) |
| 1959 | 86.3 mm (3.4 in) |
| 1960 | 42.2 mm (1.7 in) |
| 1961 | 47.7 mm (1.9 in) |
| 1962 | 72.9 mm (2.9 in) |
| 1963 | 45.3 mm (1.8 in) |
| 1964 | 38.1 mm (1.5 in) |
| 1965 | 33.0 mm (1.3 in) |
| 1966 | 93.4 mm (3.7 in) |
| 1967 | 120.8 mm (4.8 in) |
| 1968 | 48.3 mm (1.9 in) |
| 1969 | 23.6 mm (0.9 in) |
| 1970 | 79.2 mm (3.1 in) |
| 1971 | 56.4 mm (2.2 in) |
| 1972 | 61.8 mm (2.4 in) |
| 1973 | 33.3 mm (1.3 in) |
| 1974 | 52.9 mm (2.1 in) |
| 1975 | 46.8 mm (1.8 in) |
| 1976 | 29.0 mm (1.1 in) |
| 1977 | 57.7 mm (2.3 in) |
| 1978 | 65.8 mm (2.6 in) |
| 1979 | 38.7 mm (1.5 in) |
| 1980 | 69.2 mm (2.7 in) |
| 1981 | 38.2 mm (1.5 in) |
| 1982 | 69.5 mm (2.7 in) |
| 1983 | 186.0 mm (7.3 in) |
| 1984 | 68.9 mm (2.7 in) |
| 1985 | 37.4 mm (1.5 in) |
| 1986 | 41.1 mm (1.6 in) |
| 1987 | 46.5 mm (1.8 in) |
| 1988 | 52.0 mm (2.0 in) |
| 1989 | 33.6 mm (1.3 in) |
| 1990 | 50.6 mm (2.0 in) |
| 1991 | 51.1 mm (2.0 in) |
| 1992 | 55.6 mm (2.2 in) |
| 1993 | 78.1 mm (3.1 in) |
| 1994 | 67.0 mm (2.6 in) |
| 1995 | 61.0 mm (2.4 in) |
| 1996 | 62.0 mm (2.4 in) |
| 1997 | 20.3 mm (0.8 in) |
| 1998 | 64.5 mm (2.5 in) |
| 1999 | 47.6 mm (1.9 in) |
| 2000 | 50.1 mm (2.0 in) |
| 2001 | 28.2 mm (1.1 in) |
| 2002 | 39.4 mm (1.6 in) |
| 2003 | 80.5 mm (3.2 in) |
| 2004 | 28.2 mm (1.1 in) |
| 2005 | 87.4 mm (3.4 in) |
| 2006 | 98.7 mm (3.9 in) |
| 2007 | 90.5 mm (3.6 in) |
| 2008 | 12.9 mm (0.5 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1894 | 47 days |
| 1895 | 100 days |
| 1896 | 75 days |
| 1897 | 104 days |
| 1898 | 73 days |
| 1899 | 58 days |
| 1900 | 41 days |
| 1901 | 55 days |
| 1902 | 97 days |
| 1903 | 68 days |
| 1904 | 56 days |
| 1905 | 39 days |
| 1906 | 93 days |
| 1907 | 55 days |
| 1908 | 51 days |
| 1909 | 95 days |
| 1910 | 75 days |
| 1911 | 69 days |
| 1912 | 64 days |
| 1913 | 56 days |
| 1914 | 61 days |
| 1915 | 41 days |
| 1916 | 72 days |
| 1917 | 100 days |
| 1918 | 42 days |
| 1919 | 43 days |
| 1920 | 49 days |
| 1921 | 58 days |
| 1922 | 47 days |
| 1923 | 60 days |
| 1924 | 81 days |
| 1925 | 58 days |
| 1926 | 46 days |
| 1927 | 67 days |
| 1928 | 83 days |
| 1929 | 84 days |
| 1930 | 40 days |
| 1931 | 40 days |
| 1932 | 69 days |
| 1933 | 128 days |
| 1934 | 66 days |
| 1935 | 75 days |
| 1936 | 81 days |
| 1937 | 65 days |
| 1938 | 46 days |
| 1939 | 51 days |
| 1940 | 30 days |
| 1941 | 65 days |
| 1942 | 81 days |
| 1943 | 68 days |
| 1944 | 49 days |
| 1945 | 95 days |
| 1946 | 88 days |
| 1947 | 101 days |
| 1948 | 123 days |
| 1949 | 85 days |
| 1950 | 114 days |
| 1951 | 71 days |
| 1952 | 48 days |
| 1953 | 88 days |
| 1954 | 75 days |
| 1955 | 95 days |
| 1956 | 76 days |
| 1957 | 40 days |
| 1958 | 45 days |
| 1959 | 64 days |
| 1960 | 48 days |
| 1961 | 87 days |
| 1962 | 105 days |
| 1963 | 74 days |
| 1964 | 99 days |
| 1965 | 79 days |
| 1966 | 47 days |
| 1967 | 49 days |
| 1968 | 59 days |
| 1969 | 69 days |
| 1970 | 78 days |
| 1971 | 92 days |
| 1972 | 149 days |
| 1973 | 87 days |
| 1974 | 103 days |
| 1975 | 75 days |
| 1976 | 47 days |
| 1977 | 53 days |
| 1978 | 51 days |
| 1979 | 64 days |
| 1980 | 70 days |
| 1981 | 59 days |
| 1982 | 57 days |
| 1983 | 86 days |
| 1984 | 89 days |
| 1985 | 68 days |
| 1986 | 72 days |
| 1987 | 56 days |
| 1988 | 66 days |
| 1989 | 104 days |
| 1990 | 45 days |
| 1991 | 76 days |
| 1992 | 79 days |
| 1993 | 46 days |
| 1994 | 60 days |
| 1995 | 95 days |
| 1996 | 60 days |
| 1997 | 27 days |
| 1998 | 93 days |
| 1999 | 100 days |
| 2000 | 83 days |
| 2001 | 31 days |
| 2002 | 124 days |
| 2003 | 44 days |
| 2004 | 97 days |
| 2005 | 75 days |
| 2006 | 79 days |
| 2007 | 72 days |
| 2008 | 19 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
92 years with a frostAcross 92 years with a frost, the median last spring frost at Tucson WFO falls on 11 March and the median first autumn frost on 23 November, which leaves a median of 252 days between them.
In 1961 to 2006 the median growing season was 302 days. That is 68 days more than in 1895 to 1927.
Fitted over all years, the growing season changes by +8.6 days per decade at this station.
| Measure | Median, all years | Earliest period (1895 to 1927) | Recent period (1961 to 2006) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 11 March | 27 March | 9 February | 46 days earlier | -5.8 days per decade |
| First autumn frost | 23 November | 14 November | 3 December | 19 days later | +2.9 days per decade |
| Growing days | 252 days | 234 days | 302 days | 68 days more | +8.6 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
111 years, 1895 to 2007A day with at least 35.1 mm (1.4 in) of rain is expected about once in 2 years. A day with at least 77.3 mm (3.0 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 35.1 mm (1.4 in) | |
| 5 years | 47.5 mm (1.9 in) | |
| 10 years | 55.2 mm (2.2 in) | |
| 25 years | 64.5 mm (2.5 in) | |
| 50 years | 71.1 mm (2.8 in) | |
| 100 years | 77.3 mm (3.0 in) |
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 111 years of values from 1895 to 2007.
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: 105.7 mm (4.2 in) in 1983; 73.2 mm (2.9 in) in 1935; 72.1 mm (2.8 in) in 1962.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Tucson WFO, at 1941. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1941 ran 0.6 C (1.0 F) higher than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1941 | +0.6 | +1.0 | likely | 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.
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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 (2025-12-31).