Santa Rosa Weather Records (USC00047965)
Record envelope, standing records and threshold days for Santa Rosa (USC00047965), California, United States, with 125 years of record.
Key Facts for Santa Rosa
- Santa Rosa (USC00047965) is a weather station in California, United States at 38.46 latitude and -122.71 longitude, 51 m (166 ft) above sea level.
- The station reports from 1902 to 2026, 125 years of record.
- 1,464 records set at Santa Rosa still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Santa Rosa set a daily record high minimum temperature of 17.8 C (64.0 F) on 10 September 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: California, United States, 38.46 latitude, -122.71 longitude.
- Elevation: 51 m (166 ft).
- Period of record: 1902 to 2026, 125 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
7 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 29.4 C (84.9 F) | -9.4 C (15.1 F) | 22.2 C (72.0 F) | 0.0 C (32.0 F) |
| Feb | 33.9 C (93.0 F) | -6.7 C (19.9 F) | 26.7 C (80.1 F) | 0.0 C (32.0 F) |
| Mar | 33.3 C (91.9 F) | -4.4 C (24.1 F) | 33.3 C (91.9 F) | 4.4 C (39.9 F) |
| Apr | 36.7 C (98.1 F) | -3.3 C (26.1 F) | 29.4 C (84.9 F) | 5.0 C (41.0 F) |
| May | 40.0 C (104.0 F) | -2.8 C (27.0 F) | 31.7 C (89.1 F) | 5.0 C (41.0 F) |
| Jun | 42.8 C (109.0 F) | -1.1 C (30.0 F) | 38.3 C (100.9 F) | 7.8 C (46.0 F) |
| Jul | 45.0 C (113.0 F) | 3.9 C (39.0 F) | 37.2 C (99.0 F) | 10.6 C (51.1 F) |
| Aug | 41.7 C (107.1 F) | -1.1 C (30.0 F) | 35.6 C (96.1 F) | 9.4 C (48.9 F) |
| Sep | 46.1 C (115.0 F) | -1.1 C (30.0 F) | 36.7 C (98.1 F) | 7.2 C (45.0 F) |
| Oct | 40.6 C (105.1 F) | -4.4 C (24.1 F) | 37.8 C (100.0 F) | 6.7 C (44.1 F) |
| Nov | 33.3 C (91.9 F) | -6.1 C (21.0 F) | n/a | n/a |
| Dec | 28.3 C (82.9 F) | -12.8 C (9.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1902 | 5 |
| 1903 | 27 |
| 1904 | 17 |
| 1905 | 19 |
| 1906 | 7 |
| 1907 | 13 |
| 1908 | 8 |
| 1909 | 20 |
| 1910 | 15 |
| 1911 | 22 |
| 1912 | 16 |
| 1913 | 26 |
| 1914 | 35 |
| 1915 | 41 |
| 1916 | 23 |
| 1917 | 20 |
| 1918 | 18 |
| 1919 | 25 |
| 1920 | 17 |
| 1921 | 21 |
| 1922 | 21 |
| 1923 | 21 |
| 1924 | 20 |
| 1925 | 7 |
| 1926 | 14 |
| 1927 | 4 |
| 1928 | 9 |
| 1929 | 17 |
| 1930 | 16 |
| 1931 | 12 |
| 1932 | 16 |
| 1933 | 15 |
| 1934 | 14 |
| 1935 | 14 |
| 1936 | 9 |
| 1937 | 9 |
| 1938 | 2 |
| 1939 | 12 |
| 1940 | 5 |
| 1941 | 5 |
| 1942 | 4 |
| 1943 | 7 |
| 1944 | 3 |
| 1945 | 7 |
| 1946 | 10 |
| 1947 | 7 |
| 1948 | 11 |
| 1949 | 13 |
| 1950 | 15 |
| 1951 | 7 |
| 1952 | 17 |
| 1953 | 8 |
| 1954 | 6 |
| 1955 | 19 |
| 1956 | 4 |
| 1957 | 6 |
| 1958 | 9 |
| 1959 | 17 |
| 1960 | 6 |
| 1961 | 13 |
| 1962 | 15 |
| 1963 | 10 |
| 1964 | 13 |
| 1965 | 10 |
| 1966 | 13 |
| 1967 | 10 |
| 1968 | 3 |
| 1969 | 3 |
| 1970 | 8 |
| 1971 | 4 |
| 1972 | 16 |
| 1973 | 10 |
| 1974 | 5 |
| 1975 | 6 |
| 1976 | 13 |
| 1977 | 10 |
| 1978 | 4 |
| 1979 | 7 |
| 1980 | 5 |
| 1981 | 10 |
| 1982 | 13 |
| 1983 | 11 |
| 1984 | 13 |
| 1985 | 33 |
| 1986 | 15 |
| 1987 | 11 |
| 1988 | 15 |
| 1989 | 17 |
| 1990 | 20 |
| 1991 | 7 |
| 1992 | 9 |
| 1993 | 11 |
| 1994 | 4 |
| 1995 | 13 |
| 1996 | 15 |
| 1997 | 16 |
| 1998 | 9 |
| 1999 | 8 |
| 2000 | 14 |
| 2001 | 5 |
| 2002 | 9 |
| 2003 | 7 |
| 2004 | 9 |
| 2005 | 7 |
| 2006 | 4 |
| 2007 | 9 |
| 2008 | 7 |
| 2009 | 9 |
| 2010 | 7 |
| 2011 | 16 |
| 2012 | 6 |
| 2017 | 8 |
| 2018 | 12 |
| 2019 | 12 |
| 2020 | 18 |
| 2021 | 7 |
| 2022 | 14 |
| 2023 | 11 |
| 2024 | 8 |
| 2025 | 8 |
| 2026 | 16 |
All-Time Record Progression
9 new records| Date | Kind | Detail |
|---|---|---|
| 1937-02-04 | Record daily precipitation | Record daily precipitation 106.7 mm (4.2 in) |
| 1950-12-03 | Record daily precipitation | Record daily precipitation 110.0 mm (4.3 in) |
| 1962-10-12 | Record daily precipitation | Record daily precipitation 118.6 mm (4.7 in) |
| 1966-01-05 | Record daily precipitation | Record daily precipitation 128.0 mm (5.0 in) |
| 1981-12-19 | Record daily precipitation | Record daily precipitation 132.8 mm (5.2 in) |
| 1993-06-17 | Record high minimum temperature | Record high minimum temperature 25.6 C (78.1 F) |
| 2019-02-26 | Record daily precipitation | Record daily precipitation 143.8 mm (5.7 in) |
| 2021-10-24 | Record daily precipitation | Record daily precipitation 198.9 mm (7.8 in) |
| 2022-09-06 | Record high maximum temperature | Record high maximum temperature 46.1 C (115.0 F) |
Wettest Day of Each Month
Oct: 198.9 mm (7.8 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 128.0 mm (5.0 in) | 5 January 1966 |
| Feb | 143.8 mm (5.7 in) | 26 February 2019 |
| Mar | 100.3 mm (3.9 in) | 9 March 1995 |
| Apr | 77.7 mm (3.1 in) | 4 April 1926 |
| May | 71.1 mm (2.8 in) | 27 May 1990 |
| Jun | 41.9 mm (1.6 in) | 2 June 1967 |
| Jul | 33.8 mm (1.3 in) | 8 July 1974 |
| Aug | 33.5 mm (1.3 in) | 21 August 1968 |
| Sep | 73.7 mm (2.9 in) | 23 September 1904 |
| Oct | 198.9 mm (7.8 in) | 24 October 2021 |
| Nov | 138.4 mm (5.4 in) | 21 November 2024 |
| Dec | 132.8 mm (5.2 in) | 19 December 1981 |
Period of Record Coverage
1902 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1902 | 202 | 55% | No |
| 1903 | 363 | 99% | Yes |
| 1904 | 366 | 100% | Yes |
| 1905 | 363 | 99% | Yes |
| 1906 | 329 | 90% | Yes |
| 1907 | 364 | 100% | Yes |
| 1908 | 352 | 96% | Yes |
| 1909 | 364 | 100% | Yes |
| 1910 | 360 | 99% | Yes |
| 1911 | 365 | 100% | Yes |
| 1912 | 364 | 99% | Yes |
| 1913 | 362 | 99% | Yes |
| 1914 | 275 | 75% | No |
| 1915 | 361 | 99% | Yes |
| 1916 | 366 | 100% | Yes |
| 1917 | 365 | 100% | Yes |
| 1918 | 365 | 100% | Yes |
| 1919 | 365 | 100% | Yes |
| 1920 | 366 | 100% | Yes |
| 1921 | 364 | 100% | Yes |
| 1922 | 365 | 100% | Yes |
| 1923 | 353 | 97% | Yes |
| 1924 | 342 | 93% | Yes |
| 1925 | 365 | 100% | Yes |
| 1926 | 365 | 100% | Yes |
| 1927 | 355 | 97% | Yes |
| 1928 | 363 | 99% | Yes |
| 1929 | 365 | 100% | Yes |
| 1930 | 365 | 100% | Yes |
| 1931 | 360 | 99% | Yes |
| 1932 | 366 | 100% | Yes |
| 1933 | 365 | 100% | Yes |
| 1934 | 365 | 100% | Yes |
| 1935 | 364 | 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 | 366 | 100% | Yes |
| 1945 | 365 | 100% | Yes |
| 1946 | 365 | 100% | Yes |
| 1947 | 365 | 100% | Yes |
| 1948 | 366 | 100% | Yes |
| 1949 | 365 | 100% | Yes |
| 1950 | 364 | 100% | Yes |
| 1951 | 365 | 100% | Yes |
| 1952 | 365 | 100% | Yes |
| 1953 | 355 | 97% | Yes |
| 1954 | 365 | 100% | Yes |
| 1955 | 365 | 100% | Yes |
| 1956 | 366 | 100% | Yes |
| 1957 | 365 | 100% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 365 | 100% | Yes |
| 1960 | 360 | 98% | Yes |
| 1961 | 362 | 99% | Yes |
| 1962 | 364 | 100% | Yes |
| 1963 | 365 | 100% | Yes |
| 1964 | 366 | 100% | Yes |
| 1965 | 335 | 92% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 364 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 364 | 100% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 363 | 99% | Yes |
| 1978 | 300 | 82% | No |
| 1979 | 211 | 58% | No |
| 1980 | 365 | 100% | Yes |
| 1981 | 363 | 99% | Yes |
| 1982 | 360 | 99% | Yes |
| 1983 | 365 | 100% | Yes |
| 1984 | 342 | 93% | Yes |
| 1985 | 359 | 98% | Yes |
| 1986 | 361 | 99% | Yes |
| 1987 | 353 | 97% | Yes |
| 1988 | 361 | 99% | Yes |
| 1989 | 357 | 98% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 364 | 100% | Yes |
| 1992 | 363 | 99% | Yes |
| 1993 | 357 | 98% | Yes |
| 1994 | 354 | 97% | Yes |
| 1995 | 357 | 98% | Yes |
| 1996 | 339 | 93% | Yes |
| 1997 | 342 | 94% | Yes |
| 1998 | 339 | 93% | Yes |
| 1999 | 325 | 89% | No |
| 2000 | 258 | 70% | No |
| 2001 | 238 | 65% | No |
| 2002 | 304 | 83% | No |
| 2003 | 345 | 95% | Yes |
| 2004 | 335 | 92% | Yes |
| 2005 | 334 | 92% | Yes |
| 2006 | 341 | 93% | Yes |
| 2007 | 337 | 92% | Yes |
| 2008 | 323 | 88% | No |
| 2009 | 323 | 88% | No |
| 2010 | 319 | 87% | No |
| 2011 | 314 | 86% | No |
| 2012 | 233 | 64% | No |
| 2017 | 125 | 34% | No |
| 2018 | 354 | 97% | Yes |
| 2019 | 347 | 95% | Yes |
| 2020 | 353 | 96% | Yes |
| 2021 | 336 | 92% | Yes |
| 2022 | 336 | 92% | Yes |
| 2023 | 337 | 92% | Yes |
| 2024 | 341 | 93% | Yes |
| 2025 | 346 | 95% | Yes |
| 2026 | 278 | 76% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 10 September 2026 | Santa Rosa, US | daily high min (Provisional) | 17.8 C (64.0 F) | 2.2 C (4.0 F) | 28 years | 25 of 100 (Routine) |
| 3 September 2026 | Santa Rosa, US | daily rain (Provisional) | 6.9 mm (0.27 in) | 5.4 mm (0.21 in) | 113 years | 20 of 100 (Routine) |
| 5 August 2026 | Santa Rosa, US | daily high min (Tie) | 15.0 C (59.0 F) | tie | 28 years | 4 of 100 (Routine) |
| 21 July 2026 | Santa Rosa, US | daily high min (Tie) | 16.1 C (61.0 F) | tie | 20 years | 4 of 100 (Routine) |
| 11 June 2026 | Santa Rosa, US | daily high max | 38.3 C (100.9 F) | 0.5 C (0.9 F) | 7 years | 13 of 100 (Routine) |
| 20 May 2026 | Santa Rosa, US | daily high min | 15.0 C (59.0 F) | 0.6 C (1.1 F) | 105 years | 42 of 100 (Notable) |
| 10 April 2026 | Santa Rosa, US | daily high min | 13.3 C (55.9 F) | 1.6 C (2.9 F) | 24 years | 22 of 100 (Routine) |
| 1 April 2026 | Santa Rosa, US | daily high min | 12.8 C (55.0 F) | 0.6 C (1.1 F) | 29 years | 19 of 100 (Routine) |
| 29 March 2026 | Santa Rosa, US | daily high max (Tie) | 30.0 C (86.0 F) | tie | 8 years | 3 of 100 (Routine) |
| 21 March 2026 | Santa Rosa, US | daily high max | 32.8 C (91.0 F) | 2.8 C (5.0 F) | 111 years | 46 of 100 (Notable) |
| 20 March 2026 | Santa Rosa, US | daily high max | 32.8 C (91.0 F) | 3.9 C (7.0 F) | 21 years | 25 of 100 (Routine) |
| 19 March 2026 | Santa Rosa, US | monthly high max | 33.3 C (91.9 F) | 0.5 C (0.9 F) | 99 years | 50 of 100 (Notable) |
| 18 March 2026 | Santa Rosa, US | daily high max | 31.7 C (89.1 F) | 2.8 C (5.0 F) | 16 years | 20 of 100 (Routine) |
| 17 March 2026 | Santa Rosa, US | daily high max | 32.2 C (90.0 F) | 1.6 C (2.9 F) | 29 years | 21 of 100 (Routine) |
| 2 March 2026 | Santa Rosa, US | daily high min (Tie) | 12.2 C (54.0 F) | tie | 16 years | 3 of 100 (Routine) |
| 1 March 2026 | Santa Rosa, US | daily high min | 12.8 C (55.0 F) | 1.1 C (2.0 F) | 68 years | 33 of 100 (Routine) |
| 26 February 2026 | Santa Rosa, US | daily high min | 13.3 C (55.9 F) | 1.1 C (2.0 F) | 68 years | 32 of 100 (Routine) |
| 25 February 2026 | Santa Rosa, US | daily high min | 15.6 C (60.1 F) | 2.8 C (5.0 F) | 86 years | 42 of 100 (Notable) |
| 24 February 2026 | Santa Rosa, US | daily high min | 14.4 C (57.9 F) | 1.6 C (2.9 F) | 58 years | 31 of 100 (Routine) |
| 4 January 2026 | Santa Rosa, US | daily high min | 13.3 C (55.9 F) | 2.7 C (4.9 F) | 78 years | 39 of 100 (Notable) |
Climate Trend
106 complete years, 1903 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1903 | 13.5 C | -0.85 C |
| 1904 | 13.5 C | -0.81 C |
| 1905 | 13.6 C | -0.76 C |
| 1907 | 13.6 C | -0.73 C |
| 1908 | 13.1 C | -1.21 C |
| 1909 | 13.2 C | -1.12 C |
| 1910 | 13.4 C | -0.90 C |
| 1911 | 12.7 C | -1.59 C |
| 1912 | 13.3 C | -1.02 C |
| 1913 | 13.5 C | -0.86 C |
| 1915 | 13.4 C | -0.93 C |
| 1916 | 13.0 C | -1.32 C |
| 1917 | 13.2 C | -1.15 C |
| 1918 | 12.9 C | -1.41 C |
| 1919 | 12.5 C | -1.88 C |
| 1920 | 13.9 C | -0.40 C |
| 1921 | 14.2 C | -0.13 C |
| 1922 | 13.8 C | -0.49 C |
| 1923 | 13.6 C | -0.73 C |
| 1925 | 13.6 C | -0.70 C |
| 1926 | 14.8 C | +0.42 C |
| 1928 | 13.7 C | -0.64 C |
| 1929 | 13.6 C | -0.78 C |
| 1930 | 13.7 C | -0.64 C |
| 1931 | 14.7 C | +0.36 C |
| 1932 | 13.9 C | -0.39 C |
| 1933 | 13.6 C | -0.77 C |
| 1934 | 14.9 C | +0.57 C |
| 1935 | 14.2 C | -0.13 C |
| 1936 | 15.4 C | +1.03 C |
| 1937 | 14.6 C | +0.22 C |
| 1939 | 15.0 C | +0.70 C |
| 1940 | 14.9 C | +0.52 C |
| 1941 | 14.8 C | +0.42 C |
| 1942 | 14.3 C | -0.04 C |
| 1943 | 14.7 C | +0.38 C |
| 1944 | 13.9 C | -0.39 C |
| 1945 | 14.3 C | +0.01 C |
| 1946 | 13.4 C | -0.89 C |
| 1947 | 14.2 C | -0.18 C |
| 1948 | 13.0 C | -1.30 C |
| 1949 | 13.4 C | -0.95 C |
| 1950 | 14.1 C | -0.19 C |
| 1951 | 13.7 C | -0.63 C |
| 1952 | 13.6 C | -0.69 C |
| 1953 | 14.0 C | -0.38 C |
| 1954 | 13.8 C | -0.58 C |
| 1955 | 13.5 C | -0.86 C |
| 1956 | 13.7 C | -0.67 C |
| 1957 | 14.0 C | -0.29 C |
| 1958 | 15.1 C | +0.72 C |
| 1959 | 15.0 C | +0.66 C |
| 1960 | 14.2 C | -0.15 C |
| 1961 | 14.0 C | -0.30 C |
| 1962 | 13.8 C | -0.53 C |
| 1963 | 13.7 C | -0.64 C |
| 1964 | 14.0 C | -0.38 C |
| 1966 | 14.5 C | +0.13 C |
| 1967 | 14.7 C | +0.36 C |
| 1968 | 15.0 C | +0.69 C |
| 1969 | 14.7 C | +0.40 C |
| 1970 | 14.9 C | +0.61 C |
| 1971 | 14.3 C | -0.02 C |
| 1972 | 14.4 C | +0.03 C |
| 1973 | 14.8 C | +0.50 C |
| 1974 | 14.7 C | +0.37 C |
| 1975 | 14.1 C | -0.25 C |
| 1976 | 15.0 C | +0.71 C |
| 1977 | 15.2 C | +0.86 C |
| 1980 | 14.4 C | +0.06 C |
| 1981 | 15.2 C | +0.84 C |
| 1982 | 14.0 C | -0.36 C |
| 1983 | 15.2 C | +0.82 C |
| 1984 | 15.0 C | +0.65 C |
| 1985 | 12.9 C | -1.41 C |
| 1986 | 13.4 C | -0.92 C |
| 1987 | 13.8 C | -0.49 C |
| 1988 | 15.3 C | +0.97 C |
| 1989 | 14.5 C | +0.18 C |
| 1990 | 14.9 C | +0.52 C |
| 1991 | 14.7 C | +0.32 C |
| 1992 | 15.4 C | +1.05 C |
| 1993 | 15.1 C | +0.77 C |
| 1994 | 14.4 C | +0.08 C |
| 1995 | 15.6 C | +1.24 C |
| 1996 | 15.6 C | +1.28 C |
| 1997 | 16.0 C | +1.68 C |
| 1998 | 14.7 C | +0.41 C |
| 1999 | 14.5 C | +0.18 C |
| 2002 | 15.0 C | +0.64 C |
| 2003 | 14.9 C | +0.53 C |
| 2004 | 15.0 C | +0.69 C |
| 2005 | 14.5 C | +0.19 C |
| 2006 | 14.4 C | +0.05 C |
| 2007 | 14.5 C | +0.14 C |
| 2008 | 14.9 C | +0.52 C |
| 2009 | 15.3 C | +0.99 C |
| 2010 | 14.4 C | +0.11 C |
| 2018 | 15.5 C | +1.14 C |
| 2019 | 15.6 C | +1.26 C |
| 2020 | 16.0 C | +1.63 C |
| 2021 | 15.6 C | +1.22 C |
| 2022 | 15.6 C | +1.24 C |
| 2023 | 15.0 C | +0.70 C |
| 2024 | 16.3 C | +1.99 C |
| 2025 | 15.8 C | +1.47 C |
The annual mean temperature here has risen by 0.2 C (0.1 to 0.2) per decade over 1903 to 2025. In Fahrenheit: 0.3 F (0.2 to 0.4) 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 | 0.2 C (0.1 to 0.2) per decade | 0.3 F (0.2 to 0.4) per decade | 1903 to 2025 | 106 | Rise |
| Mean daily maximum | 0.1 C (0.0 to 0.1) per decade | 0.1 F (0.0 to 0.2) per decade | 1903 to 2025 | 106 | 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 | 1903 to 2025 | 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
1902 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 46.1 C (115.0 F) | 2022 | 39.4 C (102.9 F) | 121 |
| Coldest night (TNn) | -12.8 C (9.0 F) | 1924 | -4.4 C (24.1 F) | 121 |
| Wettest day (Rx1day) | 198.9 mm (7.8 in) | 2021 | 65.3 mm (2.6 in) | 121 |
| Wettest five days (Rx5day) | 335.2 mm (13.2 in) | 2024 | 131.8 mm (5.2 in) | 121 |
| Longest dry spell (CDD) | 176 days | 1905 | 106 days | 121 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1902 | 38.3 C (100.9 F) |
| 1903 | 41.7 C (107.1 F) |
| 1904 | 42.2 C (108.0 F) |
| 1905 | 42.8 C (109.0 F) |
| 1906 | 37.8 C (100.0 F) |
| 1907 | 35.0 C (95.0 F) |
| 1908 | 37.2 C (99.0 F) |
| 1909 | 41.7 C (107.1 F) |
| 1910 | 37.8 C (100.0 F) |
| 1911 | 35.6 C (96.1 F) |
| 1912 | 38.3 C (100.9 F) |
| 1913 | 45.0 C (113.0 F) |
| 1914 | 37.8 C (100.0 F) |
| 1915 | 39.4 C (102.9 F) |
| 1916 | 36.1 C (97.0 F) |
| 1917 | 43.9 C (111.0 F) |
| 1918 | 37.8 C (100.0 F) |
| 1919 | 40.0 C (104.0 F) |
| 1920 | 41.7 C (107.1 F) |
| 1921 | 42.8 C (109.0 F) |
| 1922 | 38.3 C (100.9 F) |
| 1923 | 40.0 C (104.0 F) |
| 1924 | 38.3 C (100.9 F) |
| 1925 | 40.6 C (105.1 F) |
| 1926 | 40.0 C (104.0 F) |
| 1927 | 38.3 C (100.9 F) |
| 1928 | 37.8 C (100.0 F) |
| 1929 | 38.9 C (102.0 F) |
| 1930 | 38.9 C (102.0 F) |
| 1931 | 42.8 C (109.0 F) |
| 1932 | 40.6 C (105.1 F) |
| 1933 | 39.4 C (102.9 F) |
| 1934 | 39.4 C (102.9 F) |
| 1935 | 38.3 C (100.9 F) |
| 1936 | 40.6 C (105.1 F) |
| 1937 | 38.9 C (102.0 F) |
| 1938 | 36.7 C (98.1 F) |
| 1939 | 40.6 C (105.1 F) |
| 1940 | 37.2 C (99.0 F) |
| 1941 | 36.7 C (98.1 F) |
| 1942 | 37.2 C (99.0 F) |
| 1943 | 40.0 C (104.0 F) |
| 1944 | 41.7 C (107.1 F) |
| 1945 | 38.3 C (100.9 F) |
| 1946 | 41.1 C (106.0 F) |
| 1947 | 38.3 C (100.9 F) |
| 1948 | 38.3 C (100.9 F) |
| 1949 | 39.4 C (102.9 F) |
| 1950 | 40.6 C (105.1 F) |
| 1951 | 39.4 C (102.9 F) |
| 1952 | 40.0 C (104.0 F) |
| 1953 | 41.1 C (106.0 F) |
| 1954 | 40.6 C (105.1 F) |
| 1955 | 42.2 C (108.0 F) |
| 1956 | 37.8 C (100.0 F) |
| 1957 | 41.1 C (106.0 F) |
| 1958 | 38.9 C (102.0 F) |
| 1959 | 42.2 C (108.0 F) |
| 1960 | 42.8 C (109.0 F) |
| 1961 | 41.7 C (107.1 F) |
| 1962 | 38.3 C (100.9 F) |
| 1963 | 39.4 C (102.9 F) |
| 1964 | 40.0 C (104.0 F) |
| 1965 | 36.7 C (98.1 F) |
| 1966 | 40.0 C (104.0 F) |
| 1967 | 37.8 C (100.0 F) |
| 1968 | 40.0 C (104.0 F) |
| 1969 | 37.8 C (100.0 F) |
| 1970 | 40.0 C (104.0 F) |
| 1971 | 43.3 C (109.9 F) |
| 1972 | 43.3 C (109.9 F) |
| 1973 | 40.6 C (105.1 F) |
| 1974 | 38.9 C (102.0 F) |
| 1975 | 40.6 C (105.1 F) |
| 1976 | 42.2 C (108.0 F) |
| 1977 | 41.7 C (107.1 F) |
| 1978 | 37.8 C (100.0 F) |
| 1979 | 42.2 C (108.0 F) |
| 1980 | 40.6 C (105.1 F) |
| 1981 | 40.0 C (104.0 F) |
| 1982 | 38.9 C (102.0 F) |
| 1983 | 40.6 C (105.1 F) |
| 1984 | 38.3 C (100.9 F) |
| 1985 | 36.7 C (98.1 F) |
| 1986 | 33.9 C (93.0 F) |
| 1987 | 35.6 C (96.1 F) |
| 1988 | 40.0 C (104.0 F) |
| 1989 | 36.7 C (98.1 F) |
| 1990 | 36.7 C (98.1 F) |
| 1991 | 38.3 C (100.9 F) |
| 1992 | 35.0 C (95.0 F) |
| 1993 | 39.4 C (102.9 F) |
| 1994 | 36.1 C (97.0 F) |
| 1995 | 38.3 C (100.9 F) |
| 1996 | 38.3 C (100.9 F) |
| 1997 | 36.7 C (98.1 F) |
| 1998 | 41.1 C (106.0 F) |
| 1999 | 38.3 C (100.9 F) |
| 2000 | 42.2 C (108.0 F) |
| 2001 | 38.3 C (100.9 F) |
| 2002 | 37.8 C (100.0 F) |
| 2003 | 38.3 C (100.9 F) |
| 2004 | 37.2 C (99.0 F) |
| 2005 | 36.1 C (97.0 F) |
| 2006 | 40.6 C (105.1 F) |
| 2007 | 35.6 C (96.1 F) |
| 2008 | 38.3 C (100.9 F) |
| 2009 | 39.4 C (102.9 F) |
| 2010 | 41.7 C (107.1 F) |
| 2011 | 36.7 C (98.1 F) |
| 2012 | 36.1 C (97.0 F) |
| 2017 | 43.3 C (109.9 F) |
| 2018 | 37.2 C (99.0 F) |
| 2019 | 39.4 C (102.9 F) |
| 2020 | 43.3 C (109.9 F) |
| 2021 | 40.0 C (104.0 F) |
| 2022 | 46.1 C (115.0 F) |
| 2023 | 40.0 C (104.0 F) |
| 2024 | 40.6 C (105.1 F) |
| 2025 | 37.2 C (99.0 F) |
| 2026 | 38.3 C (100.9 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1902 | -5.6 C (21.9 F) |
| 1903 | -6.1 C (21.0 F) |
| 1904 | -3.3 C (26.1 F) |
| 1905 | -5.6 C (21.9 F) |
| 1906 | -3.9 C (25.0 F) |
| 1907 | -5.0 C (23.0 F) |
| 1908 | -5.6 C (21.9 F) |
| 1909 | -4.4 C (24.1 F) |
| 1910 | -6.7 C (19.9 F) |
| 1911 | -5.0 C (23.0 F) |
| 1912 | -5.0 C (23.0 F) |
| 1913 | -6.1 C (21.0 F) |
| 1914 | -4.4 C (24.1 F) |
| 1915 | -7.8 C (18.0 F) |
| 1916 | -6.1 C (21.0 F) |
| 1917 | -6.1 C (21.0 F) |
| 1918 | -6.7 C (19.9 F) |
| 1919 | -9.4 C (15.1 F) |
| 1920 | -5.6 C (21.9 F) |
| 1921 | -5.0 C (23.0 F) |
| 1922 | -6.7 C (19.9 F) |
| 1923 | -5.6 C (21.9 F) |
| 1924 | -12.8 C (9.0 F) |
| 1925 | -3.3 C (26.1 F) |
| 1926 | -3.9 C (25.0 F) |
| 1927 | -4.4 C (24.1 F) |
| 1928 | -5.6 C (21.9 F) |
| 1929 | -6.7 C (19.9 F) |
| 1930 | -7.8 C (18.0 F) |
| 1931 | -4.4 C (24.1 F) |
| 1932 | -9.4 C (15.1 F) |
| 1933 | -5.6 C (21.9 F) |
| 1934 | -2.2 C (28.0 F) |
| 1935 | -4.4 C (24.1 F) |
| 1936 | -3.9 C (25.0 F) |
| 1937 | -8.3 C (17.1 F) |
| 1938 | -4.4 C (24.1 F) |
| 1939 | -3.3 C (26.1 F) |
| 1940 | -4.4 C (24.1 F) |
| 1941 | -3.3 C (26.1 F) |
| 1942 | -4.4 C (24.1 F) |
| 1943 | -3.9 C (25.0 F) |
| 1944 | -2.8 C (27.0 F) |
| 1945 | -4.4 C (24.1 F) |
| 1946 | -5.0 C (23.0 F) |
| 1947 | -5.6 C (21.9 F) |
| 1948 | -6.7 C (19.9 F) |
| 1949 | -7.2 C (19.0 F) |
| 1950 | -6.1 C (21.0 F) |
| 1951 | -4.4 C (24.1 F) |
| 1952 | -5.6 C (21.9 F) |
| 1953 | -2.8 C (27.0 F) |
| 1954 | -3.9 C (25.0 F) |
| 1955 | -3.3 C (26.1 F) |
| 1956 | -4.4 C (24.1 F) |
| 1957 | -5.0 C (23.0 F) |
| 1958 | -2.8 C (27.0 F) |
| 1959 | -3.3 C (26.1 F) |
| 1960 | -5.6 C (21.9 F) |
| 1961 | -5.0 C (23.0 F) |
| 1962 | -5.0 C (23.0 F) |
| 1963 | -6.1 C (21.0 F) |
| 1964 | -5.6 C (21.9 F) |
| 1965 | -6.1 C (21.0 F) |
| 1966 | -4.4 C (24.1 F) |
| 1967 | -2.8 C (27.0 F) |
| 1968 | -5.6 C (21.9 F) |
| 1969 | -3.3 C (26.1 F) |
| 1970 | -3.9 C (25.0 F) |
| 1971 | -3.3 C (26.1 F) |
| 1972 | -8.9 C (16.0 F) |
| 1973 | -4.4 C (24.1 F) |
| 1974 | -3.3 C (26.1 F) |
| 1975 | -5.6 C (21.9 F) |
| 1976 | -4.4 C (24.1 F) |
| 1977 | -3.3 C (26.1 F) |
| 1978 | -5.0 C (23.0 F) |
| 1979 | -5.6 C (21.9 F) |
| 1980 | -4.4 C (24.1 F) |
| 1981 | -1.1 C (30.0 F) |
| 1982 | -3.9 C (25.0 F) |
| 1983 | -1.1 C (30.0 F) |
| 1984 | -2.8 C (27.0 F) |
| 1985 | -3.9 C (25.0 F) |
| 1986 | -2.2 C (28.0 F) |
| 1987 | -3.3 C (26.1 F) |
| 1988 | -1.7 C (28.9 F) |
| 1989 | -5.0 C (23.0 F) |
| 1990 | -7.8 C (18.0 F) |
| 1991 | -3.3 C (26.1 F) |
| 1992 | -1.1 C (30.0 F) |
| 1993 | -3.3 C (26.1 F) |
| 1994 | -2.2 C (28.0 F) |
| 1995 | 0.0 C (32.0 F) |
| 1996 | -0.6 C (30.9 F) |
| 1997 | -1.7 C (28.9 F) |
| 1998 | -3.9 C (25.0 F) |
| 1999 | -1.7 C (28.9 F) |
| 2000 | 0.0 C (32.0 F) |
| 2001 | -0.6 C (30.9 F) |
| 2002 | -2.8 C (27.0 F) |
| 2003 | -2.8 C (27.0 F) |
| 2004 | -2.8 C (27.0 F) |
| 2005 | -2.2 C (28.0 F) |
| 2006 | -3.3 C (26.1 F) |
| 2007 | -5.0 C (23.0 F) |
| 2008 | -2.8 C (27.0 F) |
| 2009 | -5.0 C (23.0 F) |
| 2010 | -2.8 C (27.0 F) |
| 2011 | -4.4 C (24.1 F) |
| 2012 | -3.9 C (25.0 F) |
| 2017 | -1.7 C (28.9 F) |
| 2018 | -2.8 C (27.0 F) |
| 2019 | -3.9 C (25.0 F) |
| 2020 | -3.3 C (26.1 F) |
| 2021 | -2.2 C (28.0 F) |
| 2022 | -3.3 C (26.1 F) |
| 2023 | -2.8 C (27.0 F) |
| 2024 | -1.7 C (28.9 F) |
| 2025 | -2.2 C (28.0 F) |
| 2026 | 0.0 C (32.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1902 | 51.8 mm (2.0 in) |
| 1903 | 96.5 mm (3.8 in) |
| 1904 | 102.4 mm (4.0 in) |
| 1905 | 37.3 mm (1.5 in) |
| 1906 | 61.0 mm (2.4 in) |
| 1907 | 50.8 mm (2.0 in) |
| 1908 | 33.5 mm (1.3 in) |
| 1909 | 55.6 mm (2.2 in) |
| 1910 | 31.0 mm (1.2 in) |
| 1911 | 48.8 mm (1.9 in) |
| 1912 | 56.9 mm (2.2 in) |
| 1913 | 101.6 mm (4.0 in) |
| 1914 | 50.0 mm (2.0 in) |
| 1915 | 82.6 mm (3.3 in) |
| 1916 | 89.7 mm (3.5 in) |
| 1917 | 39.4 mm (1.6 in) |
| 1918 | 66.8 mm (2.6 in) |
| 1919 | 68.6 mm (2.7 in) |
| 1920 | 48.3 mm (1.9 in) |
| 1921 | 71.1 mm (2.8 in) |
| 1922 | 58.4 mm (2.3 in) |
| 1923 | 50.0 mm (2.0 in) |
| 1924 | 79.0 mm (3.1 in) |
| 1925 | 95.3 mm (3.8 in) |
| 1926 | 90.9 mm (3.6 in) |
| 1927 | 80.3 mm (3.2 in) |
| 1928 | 49.3 mm (1.9 in) |
| 1929 | 83.8 mm (3.3 in) |
| 1930 | 53.3 mm (2.1 in) |
| 1931 | 71.1 mm (2.8 in) |
| 1932 | 44.2 mm (1.7 in) |
| 1933 | 39.4 mm (1.6 in) |
| 1934 | 43.2 mm (1.7 in) |
| 1935 | 72.6 mm (2.9 in) |
| 1936 | 64.5 mm (2.5 in) |
| 1937 | 106.7 mm (4.2 in) |
| 1938 | 41.9 mm (1.6 in) |
| 1939 | 39.6 mm (1.6 in) |
| 1940 | 82.3 mm (3.2 in) |
| 1941 | 75.4 mm (3.0 in) |
| 1942 | 65.0 mm (2.6 in) |
| 1943 | 72.1 mm (2.8 in) |
| 1944 | 57.2 mm (2.3 in) |
| 1945 | 66.0 mm (2.6 in) |
| 1946 | 45.7 mm (1.8 in) |
| 1947 | 54.9 mm (2.2 in) |
| 1948 | 68.1 mm (2.7 in) |
| 1949 | 40.1 mm (1.6 in) |
| 1950 | 110.0 mm (4.3 in) |
| 1951 | 84.3 mm (3.3 in) |
| 1952 | 88.4 mm (3.5 in) |
| 1953 | 65.3 mm (2.6 in) |
| 1954 | 95.8 mm (3.8 in) |
| 1955 | 96.5 mm (3.8 in) |
| 1956 | 46.5 mm (1.8 in) |
| 1957 | 59.7 mm (2.4 in) |
| 1958 | 43.4 mm (1.7 in) |
| 1959 | 71.6 mm (2.8 in) |
| 1960 | 101.6 mm (4.0 in) |
| 1961 | 49.3 mm (1.9 in) |
| 1962 | 118.6 mm (4.7 in) |
| 1963 | 56.1 mm (2.2 in) |
| 1964 | 61.5 mm (2.4 in) |
| 1965 | 52.3 mm (2.1 in) |
| 1966 | 128.0 mm (5.0 in) |
| 1967 | 88.4 mm (3.5 in) |
| 1968 | 51.3 mm (2.0 in) |
| 1969 | 77.5 mm (3.1 in) |
| 1970 | 90.7 mm (3.6 in) |
| 1971 | 36.3 mm (1.4 in) |
| 1972 | 41.7 mm (1.6 in) |
| 1973 | 82.6 mm (3.3 in) |
| 1974 | 39.4 mm (1.6 in) |
| 1975 | 55.9 mm (2.2 in) |
| 1976 | 26.9 mm (1.1 in) |
| 1977 | 41.4 mm (1.6 in) |
| 1978 | 53.3 mm (2.1 in) |
| 1979 | 67.1 mm (2.6 in) |
| 1980 | 112.3 mm (4.4 in) |
| 1981 | 132.8 mm (5.2 in) |
| 1982 | 78.0 mm (3.1 in) |
| 1983 | 69.6 mm (2.7 in) |
| 1984 | 29.7 mm (1.2 in) |
| 1985 | 60.5 mm (2.4 in) |
| 1986 | 105.4 mm (4.1 in) |
| 1987 | 51.3 mm (2.0 in) |
| 1988 | 41.4 mm (1.6 in) |
| 1989 | 47.5 mm (1.9 in) |
| 1990 | 71.1 mm (2.8 in) |
| 1991 | 81.8 mm (3.2 in) |
| 1992 | 44.7 mm (1.8 in) |
| 1993 | 88.9 mm (3.5 in) |
| 1994 | 67.3 mm (2.6 in) |
| 1995 | 100.3 mm (3.9 in) |
| 1996 | 103.1 mm (4.1 in) |
| 1997 | 86.9 mm (3.4 in) |
| 1998 | 85.9 mm (3.4 in) |
| 1999 | 52.3 mm (2.1 in) |
| 2000 | 51.1 mm (2.0 in) |
| 2001 | 64.0 mm (2.5 in) |
| 2002 | 79.2 mm (3.1 in) |
| 2003 | 81.5 mm (3.2 in) |
| 2004 | 99.6 mm (3.9 in) |
| 2005 | 105.4 mm (4.1 in) |
| 2006 | 46.0 mm (1.8 in) |
| 2007 | 36.8 mm (1.4 in) |
| 2008 | 57.7 mm (2.3 in) |
| 2009 | 69.6 mm (2.7 in) |
| 2010 | 81.8 mm (3.2 in) |
| 2011 | 39.1 mm (1.5 in) |
| 2012 | 58.7 mm (2.3 in) |
| 2017 | 40.9 mm (1.6 in) |
| 2018 | 61.5 mm (2.4 in) |
| 2019 | 143.8 mm (5.7 in) |
| 2020 | 25.4 mm (1.0 in) |
| 2021 | 198.9 mm (7.8 in) |
| 2022 | 74.7 mm (2.9 in) |
| 2023 | 80.5 mm (3.2 in) |
| 2024 | 138.4 mm (5.4 in) |
| 2025 | 82.6 mm (3.3 in) |
| 2026 | 32.3 mm (1.3 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1902 | 88.9 mm (3.5 in) |
| 1903 | 168.3 mm (6.6 in) |
| 1904 | 168.2 mm (6.6 in) |
| 1905 | 74.9 mm (2.9 in) |
| 1906 | 170.9 mm (6.7 in) |
| 1907 | 134.0 mm (5.3 in) |
| 1908 | 62.2 mm (2.4 in) |
| 1909 | 149.3 mm (5.9 in) |
| 1910 | 70.3 mm (2.8 in) |
| 1911 | 109.0 mm (4.3 in) |
| 1912 | 89.9 mm (3.5 in) |
| 1913 | 102.6 mm (4.0 in) |
| 1914 | 176.8 mm (7.0 in) |
| 1915 | 143.8 mm (5.7 in) |
| 1916 | 126.8 mm (5.0 in) |
| 1917 | 92.2 mm (3.6 in) |
| 1918 | 86.2 mm (3.4 in) |
| 1919 | 127.0 mm (5.0 in) |
| 1920 | 120.7 mm (4.8 in) |
| 1921 | 151.7 mm (6.0 in) |
| 1922 | 125.0 mm (4.9 in) |
| 1923 | 82.3 mm (3.2 in) |
| 1924 | 91.5 mm (3.6 in) |
| 1925 | 173.6 mm (6.8 in) |
| 1926 | 232.9 mm (9.2 in) |
| 1927 | 142.5 mm (5.6 in) |
| 1928 | 134.4 mm (5.3 in) |
| 1929 | 198.1 mm (7.8 in) |
| 1930 | 85.8 mm (3.4 in) |
| 1931 | 154.4 mm (6.1 in) |
| 1932 | 92.2 mm (3.6 in) |
| 1933 | 78.2 mm (3.1 in) |
| 1934 | 110.0 mm (4.3 in) |
| 1935 | 112.3 mm (4.4 in) |
| 1936 | 133.6 mm (5.3 in) |
| 1937 | 133.1 mm (5.2 in) |
| 1938 | 112.8 mm (4.4 in) |
| 1939 | 48.7 mm (1.9 in) |
| 1940 | 196.6 mm (7.7 in) |
| 1941 | 130.0 mm (5.1 in) |
| 1942 | 207.8 mm (8.2 in) |
| 1943 | 168.1 mm (6.6 in) |
| 1944 | 115.0 mm (4.5 in) |
| 1945 | 157.4 mm (6.2 in) |
| 1946 | 89.1 mm (3.5 in) |
| 1947 | 80.1 mm (3.2 in) |
| 1948 | 93.5 mm (3.7 in) |
| 1949 | 86.7 mm (3.4 in) |
| 1950 | 163.3 mm (6.4 in) |
| 1951 | 166.8 mm (6.6 in) |
| 1952 | 146.9 mm (5.8 in) |
| 1953 | 91.8 mm (3.6 in) |
| 1954 | 127.1 mm (5.0 in) |
| 1955 | 267.2 mm (10.5 in) |
| 1956 | 134.7 mm (5.3 in) |
| 1957 | 107.1 mm (4.2 in) |
| 1958 | 120.7 mm (4.8 in) |
| 1959 | 135.9 mm (5.4 in) |
| 1960 | 164.3 mm (6.5 in) |
| 1961 | 95.5 mm (3.8 in) |
| 1962 | 240.3 mm (9.5 in) |
| 1963 | 148.4 mm (5.8 in) |
| 1964 | 131.8 mm (5.2 in) |
| 1965 | 131.9 mm (5.2 in) |
| 1966 | 168.1 mm (6.6 in) |
| 1967 | 212.3 mm (8.4 in) |
| 1968 | 92.4 mm (3.6 in) |
| 1969 | 198.1 mm (7.8 in) |
| 1970 | 160.6 mm (6.3 in) |
| 1971 | 68.1 mm (2.7 in) |
| 1972 | 104.7 mm (4.1 in) |
| 1973 | 212.5 mm (8.4 in) |
| 1974 | 113.6 mm (4.5 in) |
| 1975 | 132.7 mm (5.2 in) |
| 1976 | 61.5 mm (2.4 in) |
| 1977 | 77.9 mm (3.1 in) |
| 1978 | 128.8 mm (5.1 in) |
| 1979 | 115.2 mm (4.5 in) |
| 1980 | 150.5 mm (5.9 in) |
| 1981 | 201.1 mm (7.9 in) |
| 1982 | 153.0 mm (6.0 in) |
| 1983 | 147.0 mm (5.8 in) |
| 1984 | 92.0 mm (3.6 in) |
| 1985 | 78.0 mm (3.1 in) |
| 1986 | 281.2 mm (11.1 in) |
| 1987 | 101.6 mm (4.0 in) |
| 1988 | 89.4 mm (3.5 in) |
| 1989 | 82.6 mm (3.3 in) |
| 1990 | 97.8 mm (3.9 in) |
| 1991 | 196.4 mm (7.7 in) |
| 1992 | 141.0 mm (5.6 in) |
| 1993 | 113.6 mm (4.5 in) |
| 1994 | 124.9 mm (4.9 in) |
| 1995 | 175.3 mm (6.9 in) |
| 1996 | 125.9 mm (5.0 in) |
| 1997 | 158.3 mm (6.2 in) |
| 1998 | 198.2 mm (7.8 in) |
| 1999 | 142.1 mm (5.6 in) |
| 2000 | 150.7 mm (5.9 in) |
| 2001 | 149.6 mm (5.9 in) |
| 2002 | 214.8 mm (8.5 in) |
| 2003 | 87.9 mm (3.5 in) |
| 2004 | 164.3 mm (6.5 in) |
| 2005 | 228.3 mm (9.0 in) |
| 2006 | 215.1 mm (8.5 in) |
| 2007 | 101.3 mm (4.0 in) |
| 2008 | 113.6 mm (4.5 in) |
| 2009 | 95.6 mm (3.8 in) |
| 2010 | 134.8 mm (5.3 in) |
| 2011 | 96.7 mm (3.8 in) |
| 2012 | 160.1 mm (6.3 in) |
| 2017 | 63.3 mm (2.5 in) |
| 2018 | 98.0 mm (3.9 in) |
| 2019 | 230.1 mm (9.1 in) |
| 2020 | 35.3 mm (1.4 in) |
| 2021 | 293.6 mm (11.6 in) |
| 2022 | 75.2 mm (3.0 in) |
| 2023 | 151.5 mm (6.0 in) |
| 2024 | 335.2 mm (13.2 in) |
| 2025 | 178.6 mm (7.0 in) |
| 2026 | 103.7 mm (4.1 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1902 | 61 days |
| 1903 | 170 days |
| 1904 | 111 days |
| 1905 | 176 days |
| 1906 | 45 days |
| 1907 | 82 days |
| 1908 | 112 days |
| 1909 | 98 days |
| 1910 | 114 days |
| 1911 | 135 days |
| 1912 | 70 days |
| 1913 | 94 days |
| 1914 | 17 days |
| 1915 | 31 days |
| 1916 | 43 days |
| 1917 | 50 days |
| 1918 | 21 days |
| 1919 | 22 days |
| 1920 | 22 days |
| 1921 | 14 days |
| 1922 | 20 days |
| 1923 | 29 days |
| 1924 | 145 days |
| 1925 | 62 days |
| 1926 | 146 days |
| 1927 | 140 days |
| 1928 | 148 days |
| 1929 | 99 days |
| 1930 | 102 days |
| 1931 | 128 days |
| 1932 | 143 days |
| 1933 | 129 days |
| 1934 | 122 days |
| 1935 | 117 days |
| 1936 | 137 days |
| 1937 | 69 days |
| 1938 | 121 days |
| 1939 | 125 days |
| 1940 | 96 days |
| 1941 | 67 days |
| 1942 | 105 days |
| 1943 | 173 days |
| 1944 | 117 days |
| 1945 | 148 days |
| 1946 | 59 days |
| 1947 | 102 days |
| 1948 | 78 days |
| 1949 | 98 days |
| 1950 | 114 days |
| 1951 | 139 days |
| 1952 | 56 days |
| 1953 | 80 days |
| 1954 | 77 days |
| 1955 | 139 days |
| 1956 | 90 days |
| 1957 | 108 days |
| 1958 | 129 days |
| 1959 | 117 days |
| 1960 | 114 days |
| 1961 | 106 days |
| 1962 | 91 days |
| 1963 | 119 days |
| 1964 | 139 days |
| 1965 | 112 days |
| 1966 | 69 days |
| 1967 | 106 days |
| 1968 | 85 days |
| 1969 | 166 days |
| 1970 | 130 days |
| 1971 | 91 days |
| 1972 | 39 days |
| 1973 | 159 days |
| 1974 | 109 days |
| 1975 | 60 days |
| 1976 | 124 days |
| 1977 | 112 days |
| 1978 | 115 days |
| 1979 | 86 days |
| 1980 | 128 days |
| 1981 | 127 days |
| 1982 | 154 days |
| 1983 | 104 days |
| 1984 | 84 days |
| 1985 | 119 days |
| 1986 | 132 days |
| 1987 | 149 days |
| 1988 | 128 days |
| 1989 | 77 days |
| 1990 | 114 days |
| 1991 | 69 days |
| 1992 | 92 days |
| 1993 | 127 days |
| 1994 | 139 days |
| 1995 | 137 days |
| 1996 | 116 days |
| 1997 | 76 days |
| 1998 | 147 days |
| 1999 | 110 days |
| 2000 | 84 days |
| 2001 | 88 days |
| 2002 | 169 days |
| 2003 | 122 days |
| 2004 | 151 days |
| 2005 | 118 days |
| 2006 | 133 days |
| 2007 | 67 days |
| 2008 | 163 days |
| 2009 | 101 days |
| 2010 | 106 days |
| 2011 | 62 days |
| 2012 | 32 days |
| 2017 | 27 days |
| 2018 | 55 days |
| 2019 | 71 days |
| 2020 | 67 days |
| 2021 | 39 days |
| 2022 | 54 days |
| 2023 | 41 days |
| 2024 | 40 days |
| 2025 | 61 days |
| 2026 | 51 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
100 years with a frostAcross 100 years with a frost, the median last spring frost at Santa Rosa falls on 23 March and the median first autumn frost on 16 November, which leaves a median of 238 days between them.
In 1981 to 2024 the median growing season was 287 days. That is 88 days more than in 1903 to 1936.
Fitted over all years, the growing season changes by +8.9 days per decade at this station.
| Measure | Median, all years | Earliest period (1903 to 1936) | Recent period (1981 to 2024) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 23 March | 17 April | 14 February | 62 days earlier | -5.8 days per decade |
| First autumn frost | 16 November | 4 November | 1 December | 27 days later | +3.1 days per decade |
| Growing days | 238 days | 199 days | 287 days | 88 days more | +8.9 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
97 years, 1903 to 2025A day with at least 68.2 mm (2.7 in) of rain is expected about once in 2 years. A day with at least 160.8 mm (6.3 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 68.2 mm (2.7 in) | |
| 5 years | 94.1 mm (3.7 in) | |
| 10 years | 110.8 mm (4.4 in) | |
| 25 years | 131.4 mm (5.2 in) | |
| 50 years | 146.3 mm (5.8 in) | |
| 100 years | 160.8 mm (6.3 in) | Longer than the 97 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, 97 years of values from 1903 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: 198.9 mm (7.8 in) in 2021; 143.8 mm (5.7 in) in 2019; 138.4 mm (5.4 in) in 2024.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Santa Rosa, at 1980. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1980 ran 0.5 C (0.9 F) lower than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1980 | -0.5 | -0.9 | 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.
Climate Twins
2004 to 2025 against 1961 to 1990Over 2004 to 2025, Santa Rosa had a mean temperature of 15.2 C (59.4 F) and 782.6 mm (30.8 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Los Gatos (United States, 151 km away), Coimbra (Portugal, 9,014 km away) and Redwood City (United States, 117 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Los Gatos | United States | 151 km (94 mi) | 15.0 C (58.9 F) | 571.3 mm (22.5 in) | 0.98 |
| Coimbra | Portugal | 9,014 km (5,601 mi) | 15.6 C (60.2 F) | 984.2 mm (38.7 in) | 1.04 |
| Redwood City | United States | 117 km (73 mi) | 15.1 C (59.3 F) | 492.7 mm (19.4 in) | 1.21 |
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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-14).