Vacaville Weather Records (USC00049200)
Record envelope, standing records and threshold days for Vacaville (USC00049200), California, United States, with 117 years of record.
Key Facts for Vacaville
- Vacaville (USC00049200) is a weather station in California, United States at 38.40 latitude and -121.96 longitude, 34 m (110 ft) above sea level.
- The station reports from 1893 to 2009, 117 years of record.
- 1,464 records set at Vacaville still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Vacaville set a daily record high minimum temperature of 15.6 C (60.1 F) on 10 November 2009.
About the Station
- Location: California, United States, 38.40 latitude, -121.96 longitude.
- Elevation: 34 m (110 ft).
- Period of record: 1893 to 2009, 117 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 | 27.2 C (81.0 F) | -7.8 C (18.0 F) | n/a | n/a |
| Feb | 27.8 C (82.0 F) | -8.9 C (16.0 F) | n/a | n/a |
| Mar | 32.2 C (90.0 F) | -3.3 C (26.1 F) | n/a | n/a |
| Apr | 37.2 C (99.0 F) | -2.8 C (27.0 F) | n/a | n/a |
| May | 42.8 C (109.0 F) | -1.1 C (30.0 F) | n/a | n/a |
| Jun | 46.1 C (115.0 F) | 2.2 C (36.0 F) | n/a | n/a |
| Jul | 46.7 C (116.1 F) | 4.4 C (39.9 F) | n/a | n/a |
| Aug | 45.6 C (114.1 F) | 3.9 C (39.0 F) | n/a | n/a |
| Sep | 44.4 C (111.9 F) | 0.0 C (32.0 F) | n/a | n/a |
| Oct | 41.7 C (107.1 F) | -5.0 C (23.0 F) | n/a | n/a |
| Nov | 32.8 C (91.0 F) | -7.2 C (19.0 F) | n/a | n/a |
| Dec | 26.7 C (80.1 F) | -10.0 C (14.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1893 | 3 |
| 1894 | 1 |
| 1895 | 1 |
| 1896 | 1 |
| 1897 | 1 |
| 1899 | 3 |
| 1905 | 20 |
| 1906 | 15 |
| 1907 | 17 |
| 1908 | 25 |
| 1909 | 9 |
| 1910 | 14 |
| 1911 | 20 |
| 1912 | 18 |
| 1913 | 22 |
| 1914 | 97 |
| 1915 | 5 |
| 1916 | 12 |
| 1917 | 5 |
| 1918 | 2 |
| 1919 | 20 |
| 1920 | 31 |
| 1921 | 26 |
| 1922 | 22 |
| 1923 | 30 |
| 1924 | 31 |
| 1925 | 28 |
| 1926 | 14 |
| 1927 | 10 |
| 1928 | 10 |
| 1929 | 27 |
| 1930 | 24 |
| 1931 | 33 |
| 1932 | 32 |
| 1933 | 31 |
| 1934 | 11 |
| 1935 | 10 |
| 1936 | 17 |
| 1937 | 8 |
| 1938 | 11 |
| 1939 | 17 |
| 1940 | 2 |
| 1941 | 12 |
| 1942 | 12 |
| 1943 | 5 |
| 1944 | 10 |
| 1945 | 12 |
| 1946 | 15 |
| 1947 | 11 |
| 1948 | 18 |
| 1949 | 21 |
| 1950 | 20 |
| 1951 | 9 |
| 1952 | 14 |
| 1953 | 7 |
| 1954 | 12 |
| 1955 | 20 |
| 1956 | 11 |
| 1957 | 15 |
| 1958 | 10 |
| 1959 | 12 |
| 1960 | 10 |
| 1961 | 20 |
| 1962 | 11 |
| 1963 | 20 |
| 1964 | 15 |
| 1965 | 8 |
| 1966 | 7 |
| 1967 | 14 |
| 1968 | 15 |
| 1969 | 7 |
| 1970 | 5 |
| 1971 | 6 |
| 1972 | 18 |
| 1973 | 5 |
| 1974 | 8 |
| 1975 | 10 |
| 1976 | 17 |
| 1977 | 7 |
| 1978 | 6 |
| 1979 | 1 |
| 1980 | 2 |
| 1981 | 9 |
| 1982 | 11 |
| 1983 | 6 |
| 1984 | 8 |
| 1985 | 10 |
| 1986 | 7 |
| 1987 | 6 |
| 1988 | 4 |
| 1989 | 12 |
| 1990 | 11 |
| 1991 | 13 |
| 1992 | 8 |
| 1993 | 7 |
| 1994 | 1 |
| 1995 | 9 |
| 1996 | 17 |
| 1997 | 5 |
| 1998 | 6 |
| 1999 | 15 |
| 2000 | 15 |
| 2001 | 11 |
| 2002 | 5 |
| 2003 | 11 |
| 2004 | 13 |
| 2005 | 1 |
| 2006 | 15 |
| 2007 | 9 |
| 2008 | 11 |
| 2009 | 14 |
All-Time Record Progression
5 new records| Date | Kind | Detail |
|---|---|---|
| 1940-02-27 | Record daily precipitation | Record daily precipitation 154.9 mm (6.1 in) |
| 1960-06-02 | Record high minimum temperature | Record high minimum temperature 25.6 C (78.1 F) |
| 1982-05-24 | Record high minimum temperature | Record high minimum temperature 26.1 C (79.0 F) |
| 2000-06-14 | Record high minimum temperature | Record high minimum temperature 28.9 C (84.0 F) |
| 2006-07-23 | Record high maximum temperature | Record high maximum temperature 46.7 C (116.1 F) |
Wettest Day of Each Month
Feb: 154.9 mm (6.1 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 138.4 mm (5.4 in) | 21 January 1967 |
| Feb | 154.9 mm (6.1 in) | 27 February 1940 |
| Mar | 97.5 mm (3.8 in) | 22 March 1899 |
| Apr | 113.0 mm (4.4 in) | 1 April 1927 |
| May | 38.6 mm (1.5 in) | 1 May 1905 |
| Jun | 23.6 mm (0.9 in) | 2 June 1967 |
| Jul | 31.0 mm (1.2 in) | 8 July 1974 |
| Aug | 29.2 mm (1.1 in) | 21 August 2003 |
| Sep | 94.7 mm (3.7 in) | 18 September 1959 |
| Oct | 102.9 mm (4.1 in) | 13 October 1962 |
| Nov | 87.1 mm (3.4 in) | 9 November 1927 |
| Dec | 148.6 mm (5.9 in) | 19 December 1955 |
Period of Record Coverage
1893 to 2009| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1893 | 10 | 3% | No |
| 1894 | 9 | 2% | No |
| 1895 | 9 | 2% | No |
| 1896 | 16 | 4% | No |
| 1897 | 14 | 4% | No |
| 1898 | 7 | 2% | No |
| 1899 | 7 | 2% | No |
| 1900 | 1 | 0% | No |
| 1904 | 31 | 8% | No |
| 1905 | 365 | 100% | Yes |
| 1906 | 354 | 97% | Yes |
| 1907 | 360 | 99% | Yes |
| 1908 | 362 | 99% | Yes |
| 1909 | 365 | 100% | Yes |
| 1910 | 362 | 99% | Yes |
| 1911 | 365 | 100% | Yes |
| 1912 | 365 | 100% | Yes |
| 1913 | 243 | 67% | No |
| 1914 | 290 | 79% | No |
| 1915 | 271 | 74% | No |
| 1916 | 344 | 94% | Yes |
| 1917 | 120 | 33% | No |
| 1918 | 59 | 16% | No |
| 1919 | 272 | 75% | No |
| 1920 | 365 | 100% | Yes |
| 1921 | 364 | 100% | Yes |
| 1922 | 365 | 100% | Yes |
| 1923 | 365 | 100% | Yes |
| 1924 | 366 | 100% | Yes |
| 1925 | 350 | 96% | Yes |
| 1926 | 365 | 100% | Yes |
| 1927 | 365 | 100% | Yes |
| 1928 | 363 | 99% | Yes |
| 1929 | 365 | 100% | Yes |
| 1930 | 364 | 100% | Yes |
| 1931 | 364 | 100% | Yes |
| 1932 | 366 | 100% | Yes |
| 1933 | 365 | 100% | Yes |
| 1934 | 365 | 100% | Yes |
| 1935 | 355 | 97% | Yes |
| 1936 | 366 | 100% | Yes |
| 1937 | 365 | 100% | Yes |
| 1938 | 365 | 100% | Yes |
| 1939 | 364 | 100% | Yes |
| 1940 | 365 | 100% | Yes |
| 1941 | 364 | 100% | Yes |
| 1942 | 365 | 100% | Yes |
| 1943 | 364 | 100% | Yes |
| 1944 | 365 | 100% | Yes |
| 1945 | 365 | 100% | Yes |
| 1946 | 365 | 100% | Yes |
| 1947 | 364 | 100% | Yes |
| 1948 | 366 | 100% | Yes |
| 1949 | 360 | 99% | Yes |
| 1950 | 360 | 99% | Yes |
| 1951 | 351 | 96% | Yes |
| 1952 | 361 | 99% | Yes |
| 1953 | 364 | 100% | Yes |
| 1954 | 365 | 100% | Yes |
| 1955 | 364 | 100% | Yes |
| 1956 | 366 | 100% | Yes |
| 1957 | 365 | 100% | Yes |
| 1958 | 350 | 96% | Yes |
| 1959 | 364 | 100% | Yes |
| 1960 | 366 | 100% | Yes |
| 1961 | 351 | 96% | Yes |
| 1962 | 365 | 100% | Yes |
| 1963 | 364 | 100% | Yes |
| 1964 | 361 | 99% | Yes |
| 1965 | 359 | 98% | Yes |
| 1966 | 358 | 98% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 363 | 99% | Yes |
| 1974 | 362 | 99% | Yes |
| 1975 | 361 | 99% | Yes |
| 1976 | 364 | 99% | Yes |
| 1977 | 364 | 100% | Yes |
| 1978 | 305 | 84% | No |
| 1979 | 361 | 99% | Yes |
| 1980 | 303 | 83% | No |
| 1981 | 361 | 99% | Yes |
| 1982 | 362 | 99% | Yes |
| 1983 | 359 | 98% | Yes |
| 1984 | 359 | 98% | Yes |
| 1985 | 225 | 62% | No |
| 1986 | 289 | 79% | No |
| 1987 | 348 | 95% | Yes |
| 1988 | 219 | 60% | No |
| 1989 | 317 | 87% | No |
| 1990 | 323 | 88% | No |
| 1991 | 363 | 99% | Yes |
| 1992 | 364 | 99% | Yes |
| 1993 | 344 | 94% | Yes |
| 1994 | 326 | 89% | No |
| 1995 | 357 | 98% | Yes |
| 1996 | 363 | 99% | Yes |
| 1997 | 355 | 97% | Yes |
| 1998 | 329 | 90% | Yes |
| 1999 | 359 | 98% | Yes |
| 2000 | 352 | 96% | Yes |
| 2001 | 337 | 92% | Yes |
| 2002 | 345 | 95% | Yes |
| 2003 | 335 | 92% | Yes |
| 2004 | 339 | 93% | Yes |
| 2005 | 329 | 90% | Yes |
| 2006 | 352 | 96% | Yes |
| 2007 | 335 | 92% | Yes |
| 2008 | 342 | 93% | Yes |
| 2009 | 266 | 73% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 10 November 2009 | Vacaville, US | daily high min | 15.6 C (60.1 F) | 1.2 C (2.2 F) | 96 years | 40 of 100 (Notable) |
| 29 August 2009 | Vacaville, US | daily high max | 42.2 C (108.0 F) | 0.5 C (0.9 F) | 94 years | 39 of 100 (Notable) |
| 29 August 2009 | Vacaville, US | daily high min (Tie) | 21.1 C (70.0 F) | tie | 2 years | 2 of 100 (Routine) |
| 29 June 2009 | Vacaville, US | daily high min | 20.0 C (68.0 F) | 1.7 C (3.1 F) | 72 years | 36 of 100 (Notable) |
| 28 June 2009 | Vacaville, US | daily high max | 43.9 C (111.0 F) | 0.6 C (1.1 F) | 52 years | 26 of 100 (Routine) |
| 28 June 2009 | Vacaville, US | daily high min | 21.7 C (71.1 F) | 2.3 C (4.1 F) | 10 years | 20 of 100 (Routine) |
| 23 April 2009 | Vacaville, US | daily high min | 17.2 C (63.0 F) | 1.1 C (2.0 F) | 96 years | 41 of 100 (Notable) |
| 22 April 2009 | Vacaville, US | daily high max | 35.6 C (96.1 F) | 3.4 C (6.1 F) | 99 years | 46 of 100 (Notable) |
| 20 April 2009 | Vacaville, US | daily high max | 35.6 C (96.1 F) | 2.3 C (4.1 F) | 59 years | 31 of 100 (Routine) |
| 16 March 2009 | Vacaville, US | daily low min | -2.2 C (28.0 F) | 1.1 C (2.0 F) | 96 years | 41 of 100 (Notable) |
| 1 February 2009 | Vacaville, US | daily high max | 23.3 C (73.9 F) | 0.5 C (0.9 F) | 103 years | 41 of 100 (Notable) |
| 20 January 2009 | Vacaville, US | daily high max | 21.1 C (70.0 F) | 0.5 C (0.9 F) | 33 years | 20 of 100 (Routine) |
| 15 January 2009 | Vacaville, US | daily high max | 21.1 C (70.0 F) | 0.5 C (0.9 F) | 43 years | 23 of 100 (Routine) |
| 14 January 2009 | Vacaville, US | daily high max (Tie) | 20.6 C (69.1 F) | tie | 61 years | 7 of 100 (Routine) |
| 13 January 2009 | Vacaville, US | daily high max | 22.8 C (73.0 F) | 1.7 C (3.1 F) | 42 years | 26 of 100 (Routine) |
| 12 January 2009 | Vacaville, US | daily high max | 25.0 C (77.0 F) | 3.9 C (7.0 F) | 61 years | 38 of 100 (Notable) |
| 1 January 2009 | Vacaville, US | daily low max (Tie) | 6.1 C (43.0 F) | tie | 89 years | 9 of 100 (Routine) |
| 15 November 2008 | Vacaville, US | daily high max | 27.8 C (82.0 F) | 1.1 C (2.0 F) | 85 years | 37 of 100 (Notable) |
| 1 November 2008 | Vacaville, US | daily rain | 31.8 mm (1.3 in) | 3.4 mm (0.13 in) | 95 years | 40 of 100 (Notable) |
| 29 August 2008 | Vacaville, US | daily high max (Tie) | 41.7 C (107.1 F) | tie | 93 years | 9 of 100 (Routine) |
Climate Trend
87 complete years, 1905 to 2008| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1905 | 15.5 C | -0.46 C |
| 1906 | 16.0 C | +0.02 C |
| 1907 | 15.6 C | -0.42 C |
| 1908 | 15.8 C | -0.24 C |
| 1909 | 15.5 C | -0.48 C |
| 1910 | 16.0 C | +0.03 C |
| 1911 | 15.0 C | -0.96 C |
| 1912 | 15.4 C | -0.63 C |
| 1920 | 15.0 C | -0.99 C |
| 1921 | 15.2 C | -0.76 C |
| 1922 | 14.7 C | -1.30 C |
| 1923 | 14.8 C | -1.19 C |
| 1924 | 15.0 C | -0.98 C |
| 1926 | 15.8 C | -0.19 C |
| 1927 | 15.9 C | -0.13 C |
| 1928 | 16.4 C | +0.39 C |
| 1929 | 16.3 C | +0.28 C |
| 1930 | 15.5 C | -0.50 C |
| 1931 | 15.5 C | -0.45 C |
| 1932 | 15.4 C | -0.63 C |
| 1933 | 15.2 C | -0.84 C |
| 1934 | 17.1 C | +1.10 C |
| 1935 | 15.7 C | -0.30 C |
| 1936 | 16.6 C | +0.63 C |
| 1937 | 15.8 C | -0.23 C |
| 1938 | 15.6 C | -0.43 C |
| 1939 | 16.1 C | +0.13 C |
| 1940 | 16.1 C | +0.09 C |
| 1941 | 15.4 C | -0.62 C |
| 1942 | 15.2 C | -0.76 C |
| 1943 | 15.9 C | -0.07 C |
| 1944 | 15.6 C | -0.38 C |
| 1945 | 15.8 C | -0.22 C |
| 1946 | 14.9 C | -1.06 C |
| 1947 | 15.5 C | -0.49 C |
| 1948 | 14.5 C | -1.45 C |
| 1949 | 15.3 C | -0.69 C |
| 1950 | 16.6 C | +0.60 C |
| 1951 | 15.7 C | -0.25 C |
| 1952 | 15.7 C | -0.32 C |
| 1953 | 16.0 C | +0.02 C |
| 1954 | 15.5 C | -0.54 C |
| 1955 | 15.4 C | -0.63 C |
| 1956 | 15.5 C | -0.49 C |
| 1957 | 16.0 C | -0.03 C |
| 1958 | 17.1 C | +1.14 C |
| 1959 | 17.4 C | +1.40 C |
| 1960 | 16.6 C | +0.57 C |
| 1961 | 16.2 C | +0.22 C |
| 1962 | 15.7 C | -0.27 C |
| 1963 | 14.8 C | -1.21 C |
| 1964 | 16.1 C | +0.09 C |
| 1965 | 15.9 C | -0.07 C |
| 1966 | 16.3 C | +0.32 C |
| 1967 | 15.5 C | -0.52 C |
| 1968 | 15.7 C | -0.29 C |
| 1969 | 15.7 C | -0.30 C |
| 1970 | 16.2 C | +0.23 C |
| 1971 | 14.8 C | -1.15 C |
| 1972 | 15.2 C | -0.84 C |
| 1973 | 15.7 C | -0.27 C |
| 1974 | 15.7 C | -0.32 C |
| 1975 | 15.1 C | -0.91 C |
| 1976 | 16.0 C | -0.02 C |
| 1977 | 16.0 C | 0.00 C |
| 1979 | 15.9 C | -0.11 C |
| 1981 | 16.3 C | +0.33 C |
| 1982 | 14.9 C | -1.10 C |
| 1983 | 16.0 C | -0.02 C |
| 1984 | 16.3 C | +0.26 C |
| 1987 | 16.3 C | +0.32 C |
| 1991 | 16.7 C | +0.72 C |
| 1992 | 17.3 C | +1.27 C |
| 1993 | 16.4 C | +0.43 C |
| 1995 | 17.2 C | +1.25 C |
| 1996 | 17.7 C | +1.73 C |
| 1997 | 17.9 C | +1.87 C |
| 1999 | 16.7 C | +0.66 C |
| 2000 | 16.9 C | +0.88 C |
| 2001 | 17.5 C | +1.48 C |
| 2002 | 16.9 C | +0.94 C |
| 2003 | 17.7 C | +1.75 C |
| 2004 | 17.4 C | +1.43 C |
| 2005 | 17.2 C | +1.24 C |
| 2006 | 17.3 C | +1.29 C |
| 2007 | 17.3 C | +1.33 C |
| 2008 | 17.5 C | +1.47 C |
The annual mean temperature here has risen by 0.2 C (0.1 to 0.2) per decade over 1905 to 2008. In Fahrenheit: 0.3 F (0.2 to 0.4) per decade. The slope is a straight line fitted to 87 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.2 C (0.1 to 0.2) per decade | 0.3 F (0.2 to 0.4) per decade | 1905 to 2008 | 87 | Rise |
| Mean daily maximum | 0.06 C (0.00 to 0.12) per decade | 0.11 F (-0.01 to 0.22) per decade | 1905 to 2008 | 87 | Not clearly different from zero |
| Mean daily minimum | 0.3 C (0.2 to 0.3) per decade | 0.5 F (0.4 to 0.6) per decade | 1905 to 2008 | 87 | 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 2009| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 46.7 C (116.1 F) | 2006 | 42.8 C (109.0 F) | 114 |
| Coldest night (TNn) | -10.0 C (14.0 F) | 1924 | -4.4 C (24.1 F) | 115 |
| Wettest day (Rx1day) | 154.9 mm (6.1 in) | 1940 | 61.5 mm (2.4 in) | 117 |
| Wettest five days (Rx5day) | 339.3 mm (13.4 in) | 1955 | 126.0 mm (5.0 in) | 117 |
| Longest dry spell (CDD) | 191 days | 1903 | 115 days | 117 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1893 | 42.2 C (108.0 F) |
| 1894 | 43.3 C (109.9 F) |
| 1895 | 41.1 C (106.0 F) |
| 1896 | 41.7 C (107.1 F) |
| 1897 | 42.2 C (108.0 F) |
| 1898 | 38.3 C (100.9 F) |
| 1899 | 41.1 C (106.0 F) |
| 1900 | 27.2 C (81.0 F) |
| 1901 | n/a |
| 1902 | n/a |
| 1903 | n/a |
| 1904 | 17.8 C (64.0 F) |
| 1905 | 46.1 C (115.0 F) |
| 1906 | 42.8 C (109.0 F) |
| 1907 | 40.0 C (104.0 F) |
| 1908 | 43.9 C (111.0 F) |
| 1909 | 41.7 C (107.1 F) |
| 1910 | 42.8 C (109.0 F) |
| 1911 | 41.1 C (106.0 F) |
| 1912 | 41.7 C (107.1 F) |
| 1913 | 36.7 C (98.1 F) |
| 1914 | 41.1 C (106.0 F) |
| 1915 | 42.8 C (109.0 F) |
| 1916 | 41.7 C (107.1 F) |
| 1917 | 28.9 C (84.0 F) |
| 1918 | 21.1 C (70.0 F) |
| 1919 | 41.7 C (107.1 F) |
| 1920 | 44.4 C (111.9 F) |
| 1921 | 42.8 C (109.0 F) |
| 1922 | 42.8 C (109.0 F) |
| 1923 | 43.9 C (111.0 F) |
| 1924 | 41.1 C (106.0 F) |
| 1925 | 45.0 C (113.0 F) |
| 1926 | 43.9 C (111.0 F) |
| 1927 | 42.8 C (109.0 F) |
| 1928 | 41.1 C (106.0 F) |
| 1929 | 43.9 C (111.0 F) |
| 1930 | 41.7 C (107.1 F) |
| 1931 | 44.4 C (111.9 F) |
| 1932 | 42.2 C (108.0 F) |
| 1933 | 43.9 C (111.0 F) |
| 1934 | 43.9 C (111.0 F) |
| 1935 | 44.4 C (111.9 F) |
| 1936 | 43.3 C (109.9 F) |
| 1937 | 43.3 C (109.9 F) |
| 1938 | 43.3 C (109.9 F) |
| 1939 | 42.8 C (109.0 F) |
| 1940 | 41.7 C (107.1 F) |
| 1941 | 41.1 C (106.0 F) |
| 1942 | 43.9 C (111.0 F) |
| 1943 | 42.2 C (108.0 F) |
| 1944 | 44.4 C (111.9 F) |
| 1945 | 42.2 C (108.0 F) |
| 1946 | 42.8 C (109.0 F) |
| 1947 | 40.6 C (105.1 F) |
| 1948 | 43.3 C (109.9 F) |
| 1949 | 42.2 C (108.0 F) |
| 1950 | 45.6 C (114.1 F) |
| 1951 | 42.8 C (109.0 F) |
| 1952 | 43.3 C (109.9 F) |
| 1953 | 42.8 C (109.0 F) |
| 1954 | 44.4 C (111.9 F) |
| 1955 | 44.4 C (111.9 F) |
| 1956 | 43.3 C (109.9 F) |
| 1957 | 43.3 C (109.9 F) |
| 1958 | 41.1 C (106.0 F) |
| 1959 | 43.3 C (109.9 F) |
| 1960 | 43.3 C (109.9 F) |
| 1961 | 46.1 C (115.0 F) |
| 1962 | 40.6 C (105.1 F) |
| 1963 | 40.0 C (104.0 F) |
| 1964 | 41.1 C (106.0 F) |
| 1965 | 40.6 C (105.1 F) |
| 1966 | 43.9 C (111.0 F) |
| 1967 | 41.1 C (106.0 F) |
| 1968 | 41.7 C (107.1 F) |
| 1969 | 41.7 C (107.1 F) |
| 1970 | 41.7 C (107.1 F) |
| 1971 | 43.3 C (109.9 F) |
| 1972 | 43.9 C (111.0 F) |
| 1973 | 41.7 C (107.1 F) |
| 1974 | 40.6 C (105.1 F) |
| 1975 | 43.9 C (111.0 F) |
| 1976 | 41.1 C (106.0 F) |
| 1977 | 41.1 C (106.0 F) |
| 1978 | 42.8 C (109.0 F) |
| 1979 | 40.0 C (104.0 F) |
| 1980 | 40.6 C (105.1 F) |
| 1981 | 40.6 C (105.1 F) |
| 1982 | 38.9 C (102.0 F) |
| 1983 | 40.6 C (105.1 F) |
| 1984 | 41.7 C (107.1 F) |
| 1985 | 40.6 C (105.1 F) |
| 1986 | 37.8 C (100.0 F) |
| 1987 | 40.0 C (104.0 F) |
| 1988 | 42.8 C (109.0 F) |
| 1989 | 43.3 C (109.9 F) |
| 1990 | 43.3 C (109.9 F) |
| 1991 | 43.3 C (109.9 F) |
| 1992 | 42.8 C (109.0 F) |
| 1993 | 42.2 C (108.0 F) |
| 1994 | 40.6 C (105.1 F) |
| 1995 | 42.8 C (109.0 F) |
| 1996 | 43.9 C (111.0 F) |
| 1997 | 42.2 C (108.0 F) |
| 1998 | 41.7 C (107.1 F) |
| 1999 | 43.3 C (109.9 F) |
| 2000 | 42.2 C (108.0 F) |
| 2001 | 43.3 C (109.9 F) |
| 2002 | 44.4 C (111.9 F) |
| 2003 | 42.8 C (109.0 F) |
| 2004 | 41.1 C (106.0 F) |
| 2005 | 42.8 C (109.0 F) |
| 2006 | 46.7 C (116.1 F) |
| 2007 | 42.8 C (109.0 F) |
| 2008 | 44.4 C (111.9 F) |
| 2009 | 43.9 C (111.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1893 | 0.0 C (32.0 F) |
| 1894 | 0.6 C (33.1 F) |
| 1895 | -1.7 C (28.9 F) |
| 1896 | -1.1 C (30.0 F) |
| 1897 | 0.0 C (32.0 F) |
| 1898 | 0.0 C (32.0 F) |
| 1899 | -2.8 C (27.0 F) |
| 1900 | 2.8 C (37.0 F) |
| 1901 | 13.3 C (55.9 F) |
| 1902 | n/a |
| 1903 | n/a |
| 1904 | -2.2 C (28.0 F) |
| 1905 | -5.6 C (21.9 F) |
| 1906 | -4.4 C (24.1 F) |
| 1907 | -2.2 C (28.0 F) |
| 1908 | -3.9 C (25.0 F) |
| 1909 | -3.9 C (25.0 F) |
| 1910 | -3.9 C (25.0 F) |
| 1911 | -5.6 C (21.9 F) |
| 1912 | -3.9 C (25.0 F) |
| 1913 | -6.7 C (19.9 F) |
| 1914 | 6.7 C (44.1 F) |
| 1915 | -2.2 C (28.0 F) |
| 1916 | -5.6 C (21.9 F) |
| 1917 | -4.4 C (24.1 F) |
| 1918 | -2.8 C (27.0 F) |
| 1919 | -3.9 C (25.0 F) |
| 1920 | -6.1 C (21.0 F) |
| 1921 | -7.2 C (19.0 F) |
| 1922 | -7.2 C (19.0 F) |
| 1923 | -6.7 C (19.9 F) |
| 1924 | -10.0 C (14.0 F) |
| 1925 | -5.0 C (23.0 F) |
| 1926 | -4.4 C (24.1 F) |
| 1927 | -4.4 C (24.1 F) |
| 1928 | -5.0 C (23.0 F) |
| 1929 | -5.0 C (23.0 F) |
| 1930 | -9.4 C (15.1 F) |
| 1931 | -5.0 C (23.0 F) |
| 1932 | -8.9 C (16.0 F) |
| 1933 | -3.9 C (25.0 F) |
| 1934 | -0.6 C (30.9 F) |
| 1935 | -5.0 C (23.0 F) |
| 1936 | -5.0 C (23.0 F) |
| 1937 | -7.8 C (18.0 F) |
| 1938 | -5.0 C (23.0 F) |
| 1939 | -5.0 C (23.0 F) |
| 1940 | -3.9 C (25.0 F) |
| 1941 | -3.9 C (25.0 F) |
| 1942 | -5.0 C (23.0 F) |
| 1943 | -5.6 C (21.9 F) |
| 1944 | -1.7 C (28.9 F) |
| 1945 | -5.6 C (21.9 F) |
| 1946 | -5.0 C (23.0 F) |
| 1947 | -6.7 C (19.9 F) |
| 1948 | -7.2 C (19.0 F) |
| 1949 | -7.8 C (18.0 F) |
| 1950 | -5.6 C (21.9 F) |
| 1951 | -3.9 C (25.0 F) |
| 1952 | -4.4 C (24.1 F) |
| 1953 | -3.3 C (26.1 F) |
| 1954 | -3.9 C (25.0 F) |
| 1955 | -3.9 C (25.0 F) |
| 1956 | -5.6 C (21.9 F) |
| 1957 | -5.6 C (21.9 F) |
| 1958 | -3.3 C (26.1 F) |
| 1959 | -3.3 C (26.1 F) |
| 1960 | -5.6 C (21.9 F) |
| 1961 | -5.0 C (23.0 F) |
| 1962 | -5.6 C (21.9 F) |
| 1963 | -5.6 C (21.9 F) |
| 1964 | -3.9 C (25.0 F) |
| 1965 | -5.0 C (23.0 F) |
| 1966 | -3.3 C (26.1 F) |
| 1967 | -4.4 C (24.1 F) |
| 1968 | -5.6 C (21.9 F) |
| 1969 | -4.4 C (24.1 F) |
| 1970 | -3.9 C (25.0 F) |
| 1971 | -3.9 C (25.0 F) |
| 1972 | -6.7 C (19.9 F) |
| 1973 | -6.1 C (21.0 F) |
| 1974 | -3.9 C (25.0 F) |
| 1975 | -5.0 C (23.0 F) |
| 1976 | -6.7 C (19.9 F) |
| 1977 | -3.3 C (26.1 F) |
| 1978 | -7.8 C (18.0 F) |
| 1979 | -4.4 C (24.1 F) |
| 1980 | -2.8 C (27.0 F) |
| 1981 | -1.1 C (30.0 F) |
| 1982 | -3.3 C (26.1 F) |
| 1983 | -1.1 C (30.0 F) |
| 1984 | -4.4 C (24.1 F) |
| 1985 | -4.4 C (24.1 F) |
| 1986 | -0.6 C (30.9 F) |
| 1987 | -3.3 C (26.1 F) |
| 1988 | -5.0 C (23.0 F) |
| 1989 | -8.9 C (16.0 F) |
| 1990 | -8.3 C (17.1 F) |
| 1991 | -3.3 C (26.1 F) |
| 1992 | -4.4 C (24.1 F) |
| 1993 | -5.0 C (23.0 F) |
| 1994 | -2.2 C (28.0 F) |
| 1995 | -0.6 C (30.9 F) |
| 1996 | -3.3 C (26.1 F) |
| 1997 | -3.9 C (25.0 F) |
| 1998 | -7.2 C (19.0 F) |
| 1999 | -2.2 C (28.0 F) |
| 2000 | -1.7 C (28.9 F) |
| 2001 | -3.3 C (26.1 F) |
| 2002 | -3.3 C (26.1 F) |
| 2003 | -1.7 C (28.9 F) |
| 2004 | -2.2 C (28.0 F) |
| 2005 | -1.1 C (30.0 F) |
| 2006 | -1.7 C (28.9 F) |
| 2007 | -5.0 C (23.0 F) |
| 2008 | -3.3 C (26.1 F) |
| 2009 | -3.3 C (26.1 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1893 | 43.2 mm (1.7 in) |
| 1894 | 107.7 mm (4.2 in) |
| 1895 | 61.5 mm (2.4 in) |
| 1896 | 108.2 mm (4.3 in) |
| 1897 | 52.6 mm (2.1 in) |
| 1898 | 31.8 mm (1.3 in) |
| 1899 | 97.5 mm (3.8 in) |
| 1900 | 67.6 mm (2.7 in) |
| 1901 | 43.2 mm (1.7 in) |
| 1902 | 67.8 mm (2.7 in) |
| 1903 | 29.7 mm (1.2 in) |
| 1904 | 81.5 mm (3.2 in) |
| 1905 | 38.6 mm (1.5 in) |
| 1906 | 52.8 mm (2.1 in) |
| 1907 | 51.3 mm (2.0 in) |
| 1908 | 26.2 mm (1.0 in) |
| 1909 | 98.3 mm (3.9 in) |
| 1910 | 81.0 mm (3.2 in) |
| 1911 | 81.8 mm (3.2 in) |
| 1912 | 45.0 mm (1.8 in) |
| 1913 | 124.5 mm (4.9 in) |
| 1914 | 38.9 mm (1.5 in) |
| 1915 | 114.8 mm (4.5 in) |
| 1916 | 98.0 mm (3.9 in) |
| 1917 | 71.1 mm (2.8 in) |
| 1918 | 43.4 mm (1.7 in) |
| 1919 | 27.2 mm (1.1 in) |
| 1920 | 40.9 mm (1.6 in) |
| 1921 | 45.7 mm (1.8 in) |
| 1922 | 51.6 mm (2.0 in) |
| 1923 | 40.6 mm (1.6 in) |
| 1924 | 47.8 mm (1.9 in) |
| 1925 | 36.3 mm (1.4 in) |
| 1926 | 62.0 mm (2.4 in) |
| 1927 | 113.0 mm (4.4 in) |
| 1928 | 61.2 mm (2.4 in) |
| 1929 | 52.1 mm (2.1 in) |
| 1930 | 52.8 mm (2.1 in) |
| 1931 | 114.6 mm (4.5 in) |
| 1932 | 41.9 mm (1.6 in) |
| 1933 | 55.1 mm (2.2 in) |
| 1934 | 63.0 mm (2.5 in) |
| 1935 | 77.2 mm (3.0 in) |
| 1936 | 60.7 mm (2.4 in) |
| 1937 | 77.5 mm (3.1 in) |
| 1938 | 43.2 mm (1.7 in) |
| 1939 | 37.8 mm (1.5 in) |
| 1940 | 154.9 mm (6.1 in) |
| 1941 | 78.2 mm (3.1 in) |
| 1942 | 65.5 mm (2.6 in) |
| 1943 | 121.4 mm (4.8 in) |
| 1944 | 48.8 mm (1.9 in) |
| 1945 | 89.4 mm (3.5 in) |
| 1946 | 38.4 mm (1.5 in) |
| 1947 | 68.1 mm (2.7 in) |
| 1948 | 40.9 mm (1.6 in) |
| 1949 | 37.3 mm (1.5 in) |
| 1950 | 96.5 mm (3.8 in) |
| 1951 | 63.2 mm (2.5 in) |
| 1952 | 102.4 mm (4.0 in) |
| 1953 | 55.1 mm (2.2 in) |
| 1954 | 59.4 mm (2.3 in) |
| 1955 | 148.6 mm (5.9 in) |
| 1956 | 51.8 mm (2.0 in) |
| 1957 | 38.6 mm (1.5 in) |
| 1958 | 69.1 mm (2.7 in) |
| 1959 | 94.7 mm (3.7 in) |
| 1960 | 40.6 mm (1.6 in) |
| 1961 | 46.5 mm (1.8 in) |
| 1962 | 102.9 mm (4.1 in) |
| 1963 | 132.8 mm (5.2 in) |
| 1964 | 100.6 mm (4.0 in) |
| 1965 | 41.4 mm (1.6 in) |
| 1966 | 59.9 mm (2.4 in) |
| 1967 | 138.4 mm (5.4 in) |
| 1968 | 52.1 mm (2.1 in) |
| 1969 | 63.5 mm (2.5 in) |
| 1970 | 75.2 mm (3.0 in) |
| 1971 | 22.4 mm (0.9 in) |
| 1972 | 38.1 mm (1.5 in) |
| 1973 | 112.3 mm (4.4 in) |
| 1974 | 31.0 mm (1.2 in) |
| 1975 | 46.0 mm (1.8 in) |
| 1976 | 28.2 mm (1.1 in) |
| 1977 | 67.6 mm (2.7 in) |
| 1978 | 43.9 mm (1.7 in) |
| 1979 | 65.8 mm (2.6 in) |
| 1980 | 50.8 mm (2.0 in) |
| 1981 | 67.3 mm (2.6 in) |
| 1982 | 100.6 mm (4.0 in) |
| 1983 | 75.9 mm (3.0 in) |
| 1984 | 31.8 mm (1.3 in) |
| 1985 | 71.4 mm (2.8 in) |
| 1986 | 111.8 mm (4.4 in) |
| 1987 | 62.7 mm (2.5 in) |
| 1988 | 35.1 mm (1.4 in) |
| 1989 | 33.3 mm (1.3 in) |
| 1990 | 63.5 mm (2.5 in) |
| 1991 | 55.4 mm (2.2 in) |
| 1992 | 57.2 mm (2.3 in) |
| 1993 | 120.1 mm (4.7 in) |
| 1994 | 40.4 mm (1.6 in) |
| 1995 | 130.8 mm (5.1 in) |
| 1996 | 91.9 mm (3.6 in) |
| 1997 | 95.5 mm (3.8 in) |
| 1998 | 54.1 mm (2.1 in) |
| 1999 | 63.0 mm (2.5 in) |
| 2000 | 63.5 mm (2.5 in) |
| 2001 | 55.9 mm (2.2 in) |
| 2002 | 83.8 mm (3.3 in) |
| 2003 | 76.2 mm (3.0 in) |
| 2004 | 65.0 mm (2.6 in) |
| 2005 | 133.1 mm (5.2 in) |
| 2006 | 59.2 mm (2.3 in) |
| 2007 | 31.5 mm (1.2 in) |
| 2008 | 105.9 mm (4.2 in) |
| 2009 | 50.8 mm (2.0 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1893 | 80.8 mm (3.2 in) |
| 1894 | 139.7 mm (5.5 in) |
| 1895 | 127.6 mm (5.0 in) |
| 1896 | 229.6 mm (9.0 in) |
| 1897 | 156.5 mm (6.2 in) |
| 1898 | 43.8 mm (1.7 in) |
| 1899 | 165.6 mm (6.5 in) |
| 1900 | 122.0 mm (4.8 in) |
| 1901 | 88.4 mm (3.5 in) |
| 1902 | 188.7 mm (7.4 in) |
| 1903 | 81.0 mm (3.2 in) |
| 1904 | 131.8 mm (5.2 in) |
| 1905 | 60.7 mm (2.4 in) |
| 1906 | 171.7 mm (6.8 in) |
| 1907 | 112.0 mm (4.4 in) |
| 1908 | 52.3 mm (2.1 in) |
| 1909 | 180.9 mm (7.1 in) |
| 1910 | 40.6 mm (1.6 in) |
| 1911 | 157.0 mm (6.2 in) |
| 1912 | 82.9 mm (3.3 in) |
| 1913 | 144.3 mm (5.7 in) |
| 1914 | 120.3 mm (4.7 in) |
| 1915 | 128.2 mm (5.0 in) |
| 1916 | 134.6 mm (5.3 in) |
| 1917 | 152.8 mm (6.0 in) |
| 1918 | 75.9 mm (3.0 in) |
| 1919 | 54.7 mm (2.2 in) |
| 1920 | 76.2 mm (3.0 in) |
| 1921 | 134.1 mm (5.3 in) |
| 1922 | 123.9 mm (4.9 in) |
| 1923 | 71.6 mm (2.8 in) |
| 1924 | 85.7 mm (3.4 in) |
| 1925 | 95.2 mm (3.7 in) |
| 1926 | 166.9 mm (6.6 in) |
| 1927 | 127.0 mm (5.0 in) |
| 1928 | 118.1 mm (4.6 in) |
| 1929 | 106.5 mm (4.2 in) |
| 1930 | 76.6 mm (3.0 in) |
| 1931 | 232.2 mm (9.1 in) |
| 1932 | 81.8 mm (3.2 in) |
| 1933 | 86.9 mm (3.4 in) |
| 1934 | 116.6 mm (4.6 in) |
| 1935 | 94.4 mm (3.7 in) |
| 1936 | 130.0 mm (5.1 in) |
| 1937 | 152.7 mm (6.0 in) |
| 1938 | 127.8 mm (5.0 in) |
| 1939 | 55.1 mm (2.2 in) |
| 1940 | 227.9 mm (9.0 in) |
| 1941 | 175.2 mm (6.9 in) |
| 1942 | 192.0 mm (7.6 in) |
| 1943 | 236.7 mm (9.3 in) |
| 1944 | 111.6 mm (4.4 in) |
| 1945 | 166.9 mm (6.6 in) |
| 1946 | 90.3 mm (3.6 in) |
| 1947 | 77.8 mm (3.1 in) |
| 1948 | 62.5 mm (2.5 in) |
| 1949 | 53.8 mm (2.1 in) |
| 1950 | 158.8 mm (6.3 in) |
| 1951 | 144.7 mm (5.7 in) |
| 1952 | 163.9 mm (6.5 in) |
| 1953 | 69.1 mm (2.7 in) |
| 1954 | 110.7 mm (4.4 in) |
| 1955 | 339.3 mm (13.4 in) |
| 1956 | 94.7 mm (3.7 in) |
| 1957 | 90.2 mm (3.6 in) |
| 1958 | 129.3 mm (5.1 in) |
| 1959 | 141.3 mm (5.6 in) |
| 1960 | 92.4 mm (3.6 in) |
| 1961 | 114.1 mm (4.5 in) |
| 1962 | 207.6 mm (8.2 in) |
| 1963 | 253.9 mm (10.0 in) |
| 1964 | 200.4 mm (7.9 in) |
| 1965 | 114.4 mm (4.5 in) |
| 1966 | 129.4 mm (5.1 in) |
| 1967 | 254.3 mm (10.0 in) |
| 1968 | 95.9 mm (3.8 in) |
| 1969 | 168.5 mm (6.6 in) |
| 1970 | 174.9 mm (6.9 in) |
| 1971 | 60.5 mm (2.4 in) |
| 1972 | 101.2 mm (4.0 in) |
| 1973 | 163.6 mm (6.4 in) |
| 1974 | 78.0 mm (3.1 in) |
| 1975 | 96.3 mm (3.8 in) |
| 1976 | 47.5 mm (1.9 in) |
| 1977 | 126.0 mm (5.0 in) |
| 1978 | 141.7 mm (5.6 in) |
| 1979 | 124.0 mm (4.9 in) |
| 1980 | 175.3 mm (6.9 in) |
| 1981 | 104.1 mm (4.1 in) |
| 1982 | 194.9 mm (7.7 in) |
| 1983 | 135.4 mm (5.3 in) |
| 1984 | 82.6 mm (3.3 in) |
| 1985 | 88.6 mm (3.5 in) |
| 1986 | 245.2 mm (9.7 in) |
| 1987 | 98.7 mm (3.9 in) |
| 1988 | 83.5 mm (3.3 in) |
| 1989 | 51.3 mm (2.0 in) |
| 1990 | 77.7 mm (3.1 in) |
| 1991 | 155.3 mm (6.1 in) |
| 1992 | 125.7 mm (4.9 in) |
| 1993 | 164.4 mm (6.5 in) |
| 1994 | 94.8 mm (3.7 in) |
| 1995 | 250.2 mm (9.9 in) |
| 1996 | 136.1 mm (5.4 in) |
| 1997 | 183.2 mm (7.2 in) |
| 1998 | 170.7 mm (6.7 in) |
| 1999 | 123.2 mm (4.9 in) |
| 2000 | 156.0 mm (6.1 in) |
| 2001 | 145.6 mm (5.7 in) |
| 2002 | 248.7 mm (9.8 in) |
| 2003 | 97.7 mm (3.8 in) |
| 2004 | 145.0 mm (5.7 in) |
| 2005 | 235.2 mm (9.3 in) |
| 2006 | 246.1 mm (9.7 in) |
| 2007 | 66.8 mm (2.6 in) |
| 2008 | 131.0 mm (5.2 in) |
| 2009 | 86.6 mm (3.4 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1893 | 115 days |
| 1894 | 26 days |
| 1895 | 50 days |
| 1896 | 59 days |
| 1897 | 48 days |
| 1898 | 37 days |
| 1899 | 69 days |
| 1900 | 52 days |
| 1901 | 83 days |
| 1902 | 134 days |
| 1903 | 191 days |
| 1904 | 114 days |
| 1905 | 158 days |
| 1906 | 99 days |
| 1907 | 133 days |
| 1908 | 148 days |
| 1909 | 115 days |
| 1910 | 157 days |
| 1911 | 143 days |
| 1912 | 102 days |
| 1913 | 34 days |
| 1914 | 68 days |
| 1915 | 17 days |
| 1916 | 17 days |
| 1917 | 10 days |
| 1918 | 5 days |
| 1919 | 27 days |
| 1920 | 20 days |
| 1921 | 22 days |
| 1922 | 24 days |
| 1923 | 31 days |
| 1924 | 62 days |
| 1925 | 67 days |
| 1926 | 147 days |
| 1927 | 139 days |
| 1928 | 174 days |
| 1929 | 168 days |
| 1930 | 143 days |
| 1931 | 127 days |
| 1932 | 154 days |
| 1933 | 126 days |
| 1934 | 108 days |
| 1935 | 154 days |
| 1936 | 144 days |
| 1937 | 118 days |
| 1938 | 149 days |
| 1939 | 132 days |
| 1940 | 97 days |
| 1941 | 98 days |
| 1942 | 105 days |
| 1943 | 173 days |
| 1944 | 151 days |
| 1945 | 130 days |
| 1946 | 112 days |
| 1947 | 121 days |
| 1948 | 102 days |
| 1949 | 71 days |
| 1950 | 137 days |
| 1951 | 133 days |
| 1952 | 124 days |
| 1953 | 107 days |
| 1954 | 119 days |
| 1955 | 68 days |
| 1956 | 170 days |
| 1957 | 128 days |
| 1958 | 81 days |
| 1959 | 118 days |
| 1960 | 162 days |
| 1961 | 107 days |
| 1962 | 165 days |
| 1963 | 123 days |
| 1964 | 140 days |
| 1965 | 88 days |
| 1966 | 52 days |
| 1967 | 107 days |
| 1968 | 97 days |
| 1969 | 173 days |
| 1970 | 87 days |
| 1971 | 123 days |
| 1972 | 108 days |
| 1973 | 120 days |
| 1974 | 111 days |
| 1975 | 80 days |
| 1976 | 115 days |
| 1977 | 112 days |
| 1978 | 131 days |
| 1979 | 154 days |
| 1980 | 48 days |
| 1981 | 129 days |
| 1982 | 154 days |
| 1983 | 147 days |
| 1984 | 132 days |
| 1985 | 99 days |
| 1986 | 61 days |
| 1987 | 154 days |
| 1988 | 64 days |
| 1989 | 73 days |
| 1990 | 56 days |
| 1991 | 119 days |
| 1992 | 112 days |
| 1993 | 130 days |
| 1994 | 136 days |
| 1995 | 137 days |
| 1996 | 160 days |
| 1997 | 75 days |
| 1998 | 63 days |
| 1999 | 110 days |
| 2000 | 123 days |
| 2001 | 86 days |
| 2002 | 169 days |
| 2003 | 104 days |
| 2004 | 112 days |
| 2005 | 131 days |
| 2006 | 135 days |
| 2007 | 74 days |
| 2008 | 163 days |
| 2009 | 118 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
83 years with a frostAcross 83 years with a frost, the median last spring frost at Vacaville falls on 20 March and the median first autumn frost on 17 November, which leaves a median of 241 days between them.
In 1967 to 2008 the median growing season was 255 days. That is 38 days more than in 1905 to 1942.
Fitted over all years, the growing season changes by +7.8 days per decade at this station.
| Measure | Median, all years | Earliest period (1905 to 1942) | Recent period (1967 to 2008) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 20 March | 4 April | 11 March | 24 days earlier | -3.9 days per decade |
| First autumn frost | 17 November | 3 November | 28 November | 25 days later | +3.9 days per decade |
| Growing days | 241 days | 217 days | 255 days | 38 days more | +7.8 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
87 years, 1897 to 2008A day with at least 63.4 mm (2.5 in) of rain is expected about once in 2 years. A day with at least 174.6 mm (6.9 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 63.4 mm (2.5 in) | |
| 5 years | 91.0 mm (3.6 in) | |
| 10 years | 110.1 mm (4.3 in) | |
| 25 years | 135.2 mm (5.3 in) | |
| 50 years | 154.6 mm (6.1 in) | |
| 100 years | 174.6 mm (6.9 in) | Longer than the 87 years of record |
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 87 years of values from 1897 to 2008.
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: 154.9 mm (6.1 in) in 1940; 148.6 mm (5.9 in) in 1955; 138.4 mm (5.4 in) in 1967.
Station Changes
2 suspected2 changes were suspected in the annual mean temperature of Vacaville, at 1967 and 1993. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1967 ran 0.4 C (0.6 F) lower than in the years before (likely change).
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1993 ran 0.7 C (1.2 F) higher than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1967 | -0.4 | -0.6 | likely | 5 |
| 1993 | +0.7 | +1.2 | 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.
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 (2025-12-31).