Hat Creek Weather Records (USC00043824)
Record envelope, standing records and threshold days for Hat Creek (USC00043824), California, United States, with 106 years of record.
Key Facts for Hat Creek
- Hat Creek (USC00043824) is a weather station in California, United States at 40.93 latitude and -121.54 longitude, 919 m (3,015 ft) above sea level.
- The station reports from 1921 to 2026, 106 years of record.
- 1,464 records set at Hat Creek still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Hat Creek set a daily record low maximum temperature of 11.7 C (53.1 F) on 13 May 2025.
About the Station
- Location: California, United States, 40.93 latitude, -121.54 longitude.
- Elevation: 919 m (3,015 ft).
- Period of record: 1921 to 2026, 106 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
3 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 21.1 C (70.0 F) | -27.2 C (-17.0 F) | 16.1 C (61.0 F) | -12.8 C (9.0 F) |
| Feb | 26.1 C (79.0 F) | -22.2 C (-8.0 F) | 21.7 C (71.1 F) | -15.6 C (3.9 F) |
| Mar | 28.3 C (82.9 F) | -14.4 C (6.1 F) | 26.7 C (80.1 F) | -10.0 C (14.0 F) |
| Apr | 34.4 C (93.9 F) | -12.2 C (10.0 F) | 27.8 C (82.0 F) | -4.4 C (24.1 F) |
| May | 38.3 C (100.9 F) | -9.4 C (15.1 F) | 35.0 C (95.0 F) | 0.0 C (32.0 F) |
| Jun | 42.2 C (108.0 F) | -6.1 C (21.0 F) | 37.8 C (100.0 F) | 1.1 C (34.0 F) |
| Jul | 45.0 C (113.0 F) | -2.8 C (27.0 F) | n/a | n/a |
| Aug | 43.3 C (109.9 F) | -2.8 C (27.0 F) | n/a | n/a |
| Sep | 41.7 C (107.1 F) | -6.1 C (21.0 F) | n/a | n/a |
| Oct | 37.8 C (100.0 F) | -12.2 C (10.0 F) | n/a | n/a |
| Nov | 31.1 C (88.0 F) | -13.9 C (7.0 F) | n/a | n/a |
| Dec | 20.0 C (68.0 F) | -28.9 C (-20.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1921 | 17 |
| 1922 | 24 |
| 1923 | 38 |
| 1926 | 7 |
| 1927 | 19 |
| 1928 | 16 |
| 1929 | 28 |
| 1930 | 34 |
| 1931 | 16 |
| 1932 | 20 |
| 1933 | 21 |
| 1934 | 38 |
| 1935 | 19 |
| 1936 | 39 |
| 1937 | 22 |
| 1938 | 14 |
| 1939 | 25 |
| 1940 | 16 |
| 1941 | 19 |
| 1942 | 11 |
| 1943 | 14 |
| 1944 | 12 |
| 1945 | 15 |
| 1946 | 5 |
| 1947 | 10 |
| 1948 | 16 |
| 1949 | 19 |
| 1950 | 17 |
| 1951 | 8 |
| 1952 | 17 |
| 1953 | 11 |
| 1954 | 13 |
| 1955 | 17 |
| 1956 | 10 |
| 1957 | 15 |
| 1958 | 4 |
| 1959 | 10 |
| 1960 | 11 |
| 1961 | 19 |
| 1962 | 18 |
| 1963 | 10 |
| 1964 | 18 |
| 1965 | 8 |
| 1966 | 24 |
| 1967 | 13 |
| 1968 | 19 |
| 1969 | 14 |
| 1970 | 12 |
| 1971 | 14 |
| 1972 | 29 |
| 1973 | 9 |
| 1974 | 11 |
| 1975 | 17 |
| 1976 | 13 |
| 1977 | 17 |
| 1978 | 16 |
| 1979 | 10 |
| 1980 | 8 |
| 1981 | 10 |
| 1982 | 10 |
| 1983 | 19 |
| 1984 | 16 |
| 1985 | 20 |
| 1986 | 18 |
| 1987 | 26 |
| 1988 | 18 |
| 1989 | 17 |
| 1990 | 12 |
| 1991 | 8 |
| 1992 | 8 |
| 1993 | 11 |
| 1994 | 5 |
| 1995 | 13 |
| 1997 | 10 |
| 1998 | 12 |
| 1999 | 24 |
| 2000 | 7 |
| 2001 | 7 |
| 2002 | 11 |
| 2003 | 13 |
| 2004 | 7 |
| 2005 | 9 |
| 2006 | 8 |
| 2007 | 12 |
| 2008 | 18 |
| 2009 | 4 |
| 2010 | 8 |
| 2011 | 12 |
| 2012 | 8 |
| 2013 | 2 |
| 2014 | 7 |
| 2015 | 8 |
| 2016 | 6 |
| 2017 | 8 |
| 2018 | 8 |
| 2019 | 10 |
| 2020 | 5 |
| 2021 | 7 |
| 2022 | 20 |
| 2023 | 13 |
| 2024 | 17 |
| 2025 | 6 |
All-Time Record Progression
5 new records| Date | Kind | Detail |
|---|---|---|
| 1962-01-22 | Record low maximum temperature | Record low maximum temperature -9.4 C (15.1 F) |
| 1962-10-12 | Record daily precipitation | Record daily precipitation 71.1 mm (2.8 in) |
| 1972-12-09 | Record low minimum temperature | Record low minimum temperature -28.9 C (-20.0 F) |
| 1978-07-27 | Record high minimum temperature | Record high minimum temperature 24.4 C (75.9 F) |
| 2023-03-10 | Record daily precipitation | Record daily precipitation 152.4 mm (6.0 in) |
Wettest Day of Each Month
Mar: 152.4 mm (6.0 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 66.3 mm (2.6 in) | 21 January 1943 |
| Feb | 57.2 mm (2.3 in) | 14 February 2019 |
| Mar | 152.4 mm (6.0 in) | 10 March 2023 |
| Apr | 50.3 mm (2.0 in) | 16 April 2006 |
| May | 46.2 mm (1.8 in) | 30 May 1963 |
| Jun | 31.8 mm (1.3 in) | 23 June 2012 |
| Jul | 27.9 mm (1.1 in) | 29 July 1952 |
| Aug | 30.7 mm (1.2 in) | 23 August 1948 |
| Sep | 50.8 mm (2.0 in) | 17 September 2024 |
| Oct | 71.1 mm (2.8 in) | 12 October 1962 |
| Nov | 67.1 mm (2.6 in) | 8 November 2005 |
| Dec | 49.5 mm (1.9 in) | 9 December 1939 |
Period of Record Coverage
1921 to 2025| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1921 | 364 | 100% | Yes |
| 1922 | 340 | 93% | Yes |
| 1923 | 268 | 73% | No |
| 1926 | 153 | 42% | No |
| 1927 | 333 | 91% | Yes |
| 1928 | 366 | 100% | Yes |
| 1929 | 365 | 100% | Yes |
| 1930 | 365 | 100% | Yes |
| 1931 | 364 | 100% | Yes |
| 1932 | 366 | 100% | Yes |
| 1933 | 363 | 99% | Yes |
| 1934 | 364 | 100% | Yes |
| 1935 | 365 | 100% | Yes |
| 1936 | 366 | 100% | Yes |
| 1937 | 365 | 100% | Yes |
| 1938 | 357 | 98% | Yes |
| 1939 | 362 | 99% | Yes |
| 1940 | 364 | 99% | Yes |
| 1941 | 365 | 100% | Yes |
| 1942 | 362 | 99% | Yes |
| 1943 | 364 | 100% | Yes |
| 1944 | 366 | 100% | Yes |
| 1945 | 364 | 100% | Yes |
| 1946 | 364 | 100% | Yes |
| 1947 | 273 | 75% | No |
| 1948 | 366 | 100% | Yes |
| 1949 | 364 | 100% | Yes |
| 1950 | 364 | 100% | Yes |
| 1951 | 352 | 96% | Yes |
| 1952 | 332 | 91% | Yes |
| 1953 | 330 | 90% | Yes |
| 1954 | 314 | 86% | No |
| 1955 | 317 | 87% | No |
| 1956 | 311 | 85% | No |
| 1957 | 321 | 88% | No |
| 1958 | 322 | 88% | No |
| 1959 | 311 | 85% | No |
| 1960 | 299 | 82% | No |
| 1961 | 315 | 86% | No |
| 1962 | 360 | 99% | Yes |
| 1963 | 363 | 99% | Yes |
| 1964 | 366 | 100% | Yes |
| 1965 | 332 | 91% | Yes |
| 1966 | 365 | 100% | 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 | 365 | 100% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 365 | 100% | Yes |
| 1976 | 364 | 99% | Yes |
| 1977 | 363 | 99% | Yes |
| 1978 | 363 | 99% | Yes |
| 1979 | 364 | 100% | Yes |
| 1980 | 365 | 100% | Yes |
| 1981 | 365 | 100% | Yes |
| 1982 | 298 | 82% | No |
| 1983 | 353 | 97% | Yes |
| 1984 | 357 | 98% | Yes |
| 1985 | 362 | 99% | Yes |
| 1986 | 334 | 92% | Yes |
| 1987 | 362 | 99% | Yes |
| 1988 | 335 | 92% | Yes |
| 1989 | 272 | 75% | No |
| 1990 | 332 | 91% | Yes |
| 1991 | 364 | 100% | Yes |
| 1992 | 362 | 99% | Yes |
| 1993 | 360 | 99% | Yes |
| 1994 | 319 | 87% | No |
| 1995 | 230 | 63% | No |
| 1997 | 274 | 75% | No |
| 1998 | 364 | 100% | Yes |
| 1999 | 363 | 99% | Yes |
| 2000 | 365 | 100% | Yes |
| 2001 | 362 | 99% | Yes |
| 2002 | 364 | 100% | Yes |
| 2003 | 363 | 99% | Yes |
| 2004 | 362 | 99% | Yes |
| 2005 | 357 | 98% | Yes |
| 2006 | 351 | 96% | Yes |
| 2007 | 359 | 98% | Yes |
| 2008 | 360 | 98% | Yes |
| 2009 | 363 | 99% | Yes |
| 2010 | 299 | 82% | No |
| 2011 | 355 | 97% | Yes |
| 2012 | 302 | 83% | No |
| 2013 | 182 | 50% | No |
| 2014 | 365 | 100% | Yes |
| 2015 | 364 | 100% | Yes |
| 2016 | 365 | 100% | Yes |
| 2017 | 364 | 100% | Yes |
| 2018 | 357 | 98% | Yes |
| 2019 | 354 | 97% | Yes |
| 2020 | 301 | 82% | No |
| 2021 | 337 | 92% | Yes |
| 2022 | 364 | 100% | Yes |
| 2023 | 365 | 100% | Yes |
| 2024 | 354 | 97% | Yes |
| 2025 | 172 | 47% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 13 May 2025 | Hat Creek, US | daily low max | 11.7 C (53.1 F) | 0.5 C (0.9 F) | 32 years | 19 of 100 (Routine) |
| 1 April 2025 | Hat Creek, US | daily rain | 48.3 mm (1.9 in) | 19.3 mm (0.8 in) | 98 years | 73 of 100 (Major) |
| 26 March 2025 | Hat Creek, US | daily high max | 26.7 C (80.1 F) | 0.6 C (1.1 F) | 3 years | 11 of 100 (Routine) |
| 1 March 2025 | Hat Creek, US | daily high max | 23.3 C (73.9 F) | 1.1 C (2.0 F) | 94 years | 40 of 100 (Notable) |
| 12 February 2025 | Hat Creek, US | daily low max | 2.2 C (36.0 F) | 1.1 C (2.0 F) | 73 years | 33 of 100 (Routine) |
| 11 February 2025 | Hat Creek, US | daily low min | -13.9 C (7.0 F) | 1.7 C (3.1 F) | 7 years | 15 of 100 (Routine) |
| 7 February 2025 | Hat Creek, US | daily snowfall | 26.7 cm (10.5 in) | 21.1 cm (8.3 in) | 86 years | 69 of 100 (Major) |
| 5 February 2025 | Hat Creek, US | daily rain | 38.9 mm (1.5 in) | 18.3 mm (0.7 in) | 6 years | 33 of 100 (Routine) |
| 3 February 2025 | Hat Creek, US | daily high min | 5.6 C (42.1 F) | 1.2 C (2.2 F) | 85 years | 37 of 100 (Notable) |
| 3 February 2025 | Hat Creek, US | daily rain | 38.1 mm (1.5 in) | 6.3 mm (0.25 in) | 17 years | 22 of 100 (Routine) |
| 2 February 2025 | Hat Creek, US | daily rain | 29.2 mm (1.1 in) | 2.3 mm (0.09 in) | 65 years | 31 of 100 (Routine) |
| 3 January 2025 | Hat Creek, US | daily high min (Tie) | 3.3 C (37.9 F) | tie | 104 years | 10 of 100 (Routine) |
| 29 December 2024 | Hat Creek, US | daily high min (Tie) | 5.6 C (42.1 F) | tie | 79 years | 8 of 100 (Routine) |
| 27 December 2024 | Hat Creek, US | daily high min | 5.0 C (41.0 F) | 0.6 C (1.1 F) | 79 years | 34 of 100 (Routine) |
| 23 November 2024 | Hat Creek, US | daily rain | 37.6 mm (1.5 in) | 13.0 mm (0.5 in) | 36 years | 37 of 100 (Notable) |
| 22 November 2024 | Hat Creek, US | daily rain | 48.3 mm (1.9 in) | 25.9 mm (1.0 in) | 26 years | 51 of 100 (Notable) |
| 21 November 2024 | Hat Creek, US | daily rain | 47.0 mm (1.9 in) | 12.2 mm (0.5 in) | 69 years | 46 of 100 (Notable) |
| 21 November 2024 | Hat Creek, US | daily low max | 2.2 C (36.0 F) | 1.1 C (2.0 F) | 71 years | 33 of 100 (Routine) |
| 17 September 2024 | Hat Creek, US | monthly rain | 50.8 mm (2.0 in) | 14.2 mm (0.6 in) | 39 years | 54 of 100 (Notable) |
| 17 September 2024 | Hat Creek, US | daily high min (Tie) | 10.0 C (50.0 F) | tie | 43 years | 5 of 100 (Routine) |
Climate Trend
80 complete years, 1921 to 2024| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1921 | 11.7 C | +1.17 C |
| 1922 | 10.5 C | -0.03 C |
| 1928 | 11.5 C | +0.95 C |
| 1929 | 10.9 C | +0.32 C |
| 1930 | 10.4 C | -0.16 C |
| 1931 | 11.5 C | +1.01 C |
| 1932 | 10.9 C | +0.40 C |
| 1933 | 10.7 C | +0.15 C |
| 1934 | 12.5 C | +2.01 C |
| 1935 | 10.8 C | +0.29 C |
| 1936 | 11.6 C | +1.09 C |
| 1937 | 10.8 C | +0.22 C |
| 1938 | 11.4 C | +0.83 C |
| 1939 | 11.8 C | +1.31 C |
| 1940 | 12.0 C | +1.51 C |
| 1942 | 10.9 C | +0.32 C |
| 1943 | 11.2 C | +0.70 C |
| 1944 | 10.8 C | +0.31 C |
| 1945 | 11.3 C | +0.80 C |
| 1946 | 10.8 C | +0.30 C |
| 1948 | 9.4 C | -1.10 C |
| 1949 | 10.3 C | -0.23 C |
| 1950 | 11.0 C | +0.51 C |
| 1951 | 10.7 C | +0.19 C |
| 1952 | 10.3 C | -0.21 C |
| 1953 | 10.3 C | -0.25 C |
| 1955 | 9.1 C | -1.40 C |
| 1956 | 9.6 C | -0.93 C |
| 1957 | 9.4 C | -1.13 C |
| 1959 | 10.2 C | -0.31 C |
| 1961 | 10.0 C | -0.49 C |
| 1962 | 10.0 C | -0.49 C |
| 1963 | 9.9 C | -0.64 C |
| 1964 | 9.5 C | -1.00 C |
| 1966 | 10.0 C | -0.55 C |
| 1967 | 9.8 C | -0.77 C |
| 1968 | 9.5 C | -1.06 C |
| 1969 | 9.8 C | -0.75 C |
| 1970 | 10.3 C | -0.26 C |
| 1971 | 9.4 C | -1.10 C |
| 1972 | 9.8 C | -0.74 C |
| 1973 | 10.4 C | -0.13 C |
| 1974 | 10.0 C | -0.51 C |
| 1975 | 9.7 C | -0.84 C |
| 1976 | 10.5 C | -0.08 C |
| 1977 | 11.0 C | +0.42 C |
| 1978 | 10.9 C | +0.38 C |
| 1979 | 10.7 C | +0.20 C |
| 1980 | 11.1 C | +0.52 C |
| 1981 | 11.7 C | +1.12 C |
| 1983 | 10.7 C | +0.16 C |
| 1984 | 10.9 C | +0.33 C |
| 1985 | 10.7 C | +0.19 C |
| 1987 | 11.7 C | +1.14 C |
| 1991 | 10.9 C | +0.38 C |
| 1992 | 11.3 C | +0.74 C |
| 1993 | 9.7 C | -0.88 C |
| 1994 | 10.3 C | -0.28 C |
| 1998 | 10.0 C | -0.58 C |
| 1999 | 9.7 C | -0.87 C |
| 2000 | 10.1 C | -0.46 C |
| 2001 | 10.3 C | -0.21 C |
| 2002 | 10.4 C | -0.12 C |
| 2003 | 10.7 C | +0.17 C |
| 2004 | 10.5 C | +0.00 C |
| 2005 | 9.8 C | -0.75 C |
| 2006 | 9.6 C | -0.95 C |
| 2007 | 9.7 C | -0.82 C |
| 2008 | 10.0 C | -0.51 C |
| 2009 | 10.1 C | -0.45 C |
| 2011 | 9.6 C | -0.97 C |
| 2014 | 11.6 C | +1.11 C |
| 2015 | 11.6 C | +1.06 C |
| 2016 | 11.1 C | +0.61 C |
| 2017 | 10.9 C | +0.34 C |
| 2018 | 10.5 C | +0.01 C |
| 2019 | 10.0 C | -0.52 C |
| 2022 | 10.6 C | +0.02 C |
| 2023 | 10.0 C | -0.49 C |
| 2024 | 11.0 C | +0.50 C |
The annual mean temperature here has fallen by 0.06 C (0.01 to 0.12) per decade over 1921 to 2024. In Fahrenheit: 0.11 F (0.02 to 0.21) per decade. The slope is a straight line fitted to 80 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | -0.06 C (-0.12 to -0.01) per decade | -0.11 F (-0.21 to -0.02) per decade | 1921 to 2024 | 80 | Fall |
| Mean daily maximum | -0.1 C (-0.2 to -0.1) per decade | -0.2 F (-0.4 to -0.1) per decade | 1921 to 2024 | 80 | Fall |
| Mean daily minimum | 0.00 C (-0.07 to 0.07) per decade | 0.0 F (-0.1 to 0.1) per decade | 1921 to 2024 | 80 | Not clearly different from zero |
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
1921 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 45.0 C (113.0 F) | 1928 | 40.0 C (104.0 F) | 102 |
| Coldest night (TNn) | -28.9 C (-20.0 F) | 1972 | -15.0 C (5.0 F) | 102 |
| Wettest day (Rx1day) | 152.4 mm (6.0 in) | 2023 | 31.8 mm (1.3 in) | 105 |
| Wettest five days (Rx5day) | 198.1 mm (7.8 in) | 1962 | 63.0 mm (2.5 in) | 105 |
| Longest dry spell (CDD) | 144 days | 2021 | 64 days | 105 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1921 | 40.6 C (105.1 F) |
| 1922 | 40.6 C (105.1 F) |
| 1923 | 38.3 C (100.9 F) |
| 1924 | n/a |
| 1925 | n/a |
| 1926 | 40.0 C (104.0 F) |
| 1927 | 40.0 C (104.0 F) |
| 1928 | 45.0 C (113.0 F) |
| 1929 | 42.2 C (108.0 F) |
| 1930 | 40.6 C (105.1 F) |
| 1931 | 42.8 C (109.0 F) |
| 1932 | 42.2 C (108.0 F) |
| 1933 | 43.3 C (109.9 F) |
| 1934 | 41.1 C (106.0 F) |
| 1935 | 42.8 C (109.0 F) |
| 1936 | 41.1 C (106.0 F) |
| 1937 | 40.6 C (105.1 F) |
| 1938 | 42.2 C (108.0 F) |
| 1939 | 42.2 C (108.0 F) |
| 1940 | 41.1 C (106.0 F) |
| 1941 | 38.9 C (102.0 F) |
| 1942 | 42.2 C (108.0 F) |
| 1943 | 38.3 C (100.9 F) |
| 1944 | 40.6 C (105.1 F) |
| 1945 | 41.1 C (106.0 F) |
| 1946 | 43.3 C (109.9 F) |
| 1947 | 36.7 C (98.1 F) |
| 1948 | 36.7 C (98.1 F) |
| 1949 | 41.1 C (106.0 F) |
| 1950 | 40.0 C (104.0 F) |
| 1951 | 38.3 C (100.9 F) |
| 1952 | 39.4 C (102.9 F) |
| 1953 | 38.3 C (100.9 F) |
| 1954 | 37.8 C (100.0 F) |
| 1955 | 41.1 C (106.0 F) |
| 1956 | 38.9 C (102.0 F) |
| 1957 | 36.7 C (98.1 F) |
| 1958 | 37.2 C (99.0 F) |
| 1959 | 41.7 C (107.1 F) |
| 1960 | 41.7 C (107.1 F) |
| 1961 | 42.2 C (108.0 F) |
| 1962 | 37.8 C (100.0 F) |
| 1963 | 36.7 C (98.1 F) |
| 1964 | 39.4 C (102.9 F) |
| 1965 | 35.6 C (96.1 F) |
| 1966 | 38.3 C (100.9 F) |
| 1967 | 38.9 C (102.0 F) |
| 1968 | 37.8 C (100.0 F) |
| 1969 | 37.8 C (100.0 F) |
| 1970 | 37.8 C (100.0 F) |
| 1971 | 42.2 C (108.0 F) |
| 1972 | 43.3 C (109.9 F) |
| 1973 | 40.6 C (105.1 F) |
| 1974 | 38.9 C (102.0 F) |
| 1975 | 38.9 C (102.0 F) |
| 1976 | 38.9 C (102.0 F) |
| 1977 | 40.0 C (104.0 F) |
| 1978 | 41.7 C (107.1 F) |
| 1979 | 39.4 C (102.9 F) |
| 1980 | 39.4 C (102.9 F) |
| 1981 | 42.8 C (109.0 F) |
| 1982 | 36.7 C (98.1 F) |
| 1983 | 38.3 C (100.9 F) |
| 1984 | 40.0 C (104.0 F) |
| 1985 | 38.9 C (102.0 F) |
| 1986 | 37.8 C (100.0 F) |
| 1987 | 40.6 C (105.1 F) |
| 1988 | 41.7 C (107.1 F) |
| 1989 | 36.7 C (98.1 F) |
| 1990 | 40.0 C (104.0 F) |
| 1991 | 40.0 C (104.0 F) |
| 1992 | 40.0 C (104.0 F) |
| 1993 | 39.4 C (102.9 F) |
| 1994 | 41.1 C (106.0 F) |
| 1995 | 37.8 C (100.0 F) |
| 1997 | 39.4 C (102.9 F) |
| 1998 | 40.6 C (105.1 F) |
| 1999 | 41.7 C (107.1 F) |
| 2000 | 37.8 C (100.0 F) |
| 2001 | 38.9 C (102.0 F) |
| 2002 | 42.8 C (109.0 F) |
| 2003 | 42.2 C (108.0 F) |
| 2004 | 38.3 C (100.9 F) |
| 2005 | 38.9 C (102.0 F) |
| 2006 | 40.6 C (105.1 F) |
| 2007 | 41.1 C (106.0 F) |
| 2008 | 41.7 C (107.1 F) |
| 2009 | 38.9 C (102.0 F) |
| 2010 | 38.9 C (102.0 F) |
| 2011 | 37.2 C (99.0 F) |
| 2012 | 40.0 C (104.0 F) |
| 2013 | 40.6 C (105.1 F) |
| 2014 | 40.0 C (104.0 F) |
| 2015 | 39.4 C (102.9 F) |
| 2016 | 40.0 C (104.0 F) |
| 2017 | 41.7 C (107.1 F) |
| 2018 | 38.9 C (102.0 F) |
| 2019 | 39.4 C (102.9 F) |
| 2020 | 40.0 C (104.0 F) |
| 2021 | 42.2 C (108.0 F) |
| 2022 | 42.2 C (108.0 F) |
| 2023 | 40.0 C (104.0 F) |
| 2024 | 42.8 C (109.0 F) |
| 2025 | 37.8 C (100.0 F) |
| 2026 | n/a |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1921 | -11.1 C (12.0 F) |
| 1922 | -19.4 C (-2.9 F) |
| 1923 | -21.1 C (-6.0 F) |
| 1924 | n/a |
| 1925 | n/a |
| 1926 | -6.1 C (21.0 F) |
| 1927 | -12.8 C (9.0 F) |
| 1928 | -17.8 C (0.0 F) |
| 1929 | -14.4 C (6.1 F) |
| 1930 | -27.2 C (-17.0 F) |
| 1931 | -16.1 C (3.0 F) |
| 1932 | -25.0 C (-13.0 F) |
| 1933 | -20.0 C (-4.0 F) |
| 1934 | -10.6 C (12.9 F) |
| 1935 | -16.1 C (3.0 F) |
| 1936 | -16.1 C (3.0 F) |
| 1937 | -26.7 C (-16.1 F) |
| 1938 | -13.3 C (8.1 F) |
| 1939 | -12.2 C (10.0 F) |
| 1940 | -15.6 C (3.9 F) |
| 1941 | -14.4 C (6.1 F) |
| 1942 | -20.0 C (-4.0 F) |
| 1943 | -16.1 C (3.0 F) |
| 1944 | -12.8 C (9.0 F) |
| 1945 | -12.8 C (9.0 F) |
| 1946 | -15.6 C (3.9 F) |
| 1947 | -13.3 C (8.1 F) |
| 1948 | -21.1 C (-6.0 F) |
| 1949 | -23.9 C (-11.0 F) |
| 1950 | -20.0 C (-4.0 F) |
| 1951 | -14.4 C (6.1 F) |
| 1952 | -18.9 C (-2.0 F) |
| 1953 | -10.0 C (14.0 F) |
| 1954 | -14.4 C (6.1 F) |
| 1955 | -14.4 C (6.1 F) |
| 1956 | -17.2 C (1.0 F) |
| 1957 | -21.7 C (-7.1 F) |
| 1958 | -9.4 C (15.1 F) |
| 1959 | -12.8 C (9.0 F) |
| 1960 | -16.1 C (3.0 F) |
| 1961 | -13.3 C (8.1 F) |
| 1962 | -19.4 C (-2.9 F) |
| 1963 | -16.7 C (1.9 F) |
| 1964 | -12.2 C (10.0 F) |
| 1965 | -16.1 C (3.0 F) |
| 1966 | -17.8 C (0.0 F) |
| 1967 | -17.8 C (0.0 F) |
| 1968 | -17.8 C (0.0 F) |
| 1969 | -21.1 C (-6.0 F) |
| 1970 | -15.6 C (3.9 F) |
| 1971 | -18.3 C (-0.9 F) |
| 1972 | -28.9 C (-20.0 F) |
| 1973 | -16.7 C (1.9 F) |
| 1974 | -22.2 C (-8.0 F) |
| 1975 | -15.0 C (5.0 F) |
| 1976 | -12.8 C (9.0 F) |
| 1977 | -18.9 C (-2.0 F) |
| 1978 | -16.7 C (1.9 F) |
| 1979 | -14.4 C (6.1 F) |
| 1980 | -12.8 C (9.0 F) |
| 1981 | -10.6 C (12.9 F) |
| 1982 | -15.6 C (3.9 F) |
| 1983 | -13.3 C (8.1 F) |
| 1984 | -15.0 C (5.0 F) |
| 1985 | -13.9 C (7.0 F) |
| 1986 | -8.9 C (16.0 F) |
| 1987 | -15.0 C (5.0 F) |
| 1988 | -16.7 C (1.9 F) |
| 1989 | -20.6 C (-5.1 F) |
| 1990 | -22.2 C (-8.0 F) |
| 1991 | -14.4 C (6.1 F) |
| 1992 | -15.6 C (3.9 F) |
| 1993 | -22.8 C (-9.0 F) |
| 1994 | -15.6 C (3.9 F) |
| 1995 | -13.9 C (7.0 F) |
| 1997 | -10.0 C (14.0 F) |
| 1998 | -18.3 C (-0.9 F) |
| 1999 | -11.1 C (12.0 F) |
| 2000 | -11.1 C (12.0 F) |
| 2001 | -12.8 C (9.0 F) |
| 2002 | -13.9 C (7.0 F) |
| 2003 | -11.7 C (10.9 F) |
| 2004 | -12.2 C (10.0 F) |
| 2005 | -13.3 C (8.1 F) |
| 2006 | -15.6 C (3.9 F) |
| 2007 | -13.9 C (7.0 F) |
| 2008 | -20.6 C (-5.1 F) |
| 2009 | -18.3 C (-0.9 F) |
| 2010 | -12.2 C (10.0 F) |
| 2011 | -15.0 C (5.0 F) |
| 2012 | -16.7 C (1.9 F) |
| 2013 | -10.0 C (14.0 F) |
| 2014 | -12.2 C (10.0 F) |
| 2015 | -12.8 C (9.0 F) |
| 2016 | -14.4 C (6.1 F) |
| 2017 | -20.0 C (-4.0 F) |
| 2018 | -13.3 C (8.1 F) |
| 2019 | -13.3 C (8.1 F) |
| 2020 | -11.7 C (10.9 F) |
| 2021 | -12.2 C (10.0 F) |
| 2022 | -13.9 C (7.0 F) |
| 2023 | -12.8 C (9.0 F) |
| 2024 | -12.2 C (10.0 F) |
| 2025 | -15.6 C (3.9 F) |
| 2026 | n/a |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1921 | 25.9 mm (1.0 in) |
| 1922 | 38.9 mm (1.5 in) |
| 1923 | 27.7 mm (1.1 in) |
| 1924 | 17.8 mm (0.7 in) |
| 1925 | 25.4 mm (1.0 in) |
| 1926 | 27.2 mm (1.1 in) |
| 1927 | 29.0 mm (1.1 in) |
| 1928 | 44.2 mm (1.7 in) |
| 1929 | 20.8 mm (0.8 in) |
| 1930 | 30.5 mm (1.2 in) |
| 1931 | 47.0 mm (1.9 in) |
| 1932 | 19.8 mm (0.8 in) |
| 1933 | 24.9 mm (1.0 in) |
| 1934 | 28.2 mm (1.1 in) |
| 1935 | 33.0 mm (1.3 in) |
| 1936 | 33.0 mm (1.3 in) |
| 1937 | 40.9 mm (1.6 in) |
| 1938 | 48.0 mm (1.9 in) |
| 1939 | 49.5 mm (1.9 in) |
| 1940 | 34.3 mm (1.4 in) |
| 1941 | 39.1 mm (1.5 in) |
| 1942 | 53.8 mm (2.1 in) |
| 1943 | 66.3 mm (2.6 in) |
| 1944 | 31.5 mm (1.2 in) |
| 1945 | 23.9 mm (0.9 in) |
| 1946 | 29.5 mm (1.2 in) |
| 1947 | 31.5 mm (1.2 in) |
| 1948 | 44.7 mm (1.8 in) |
| 1949 | 16.3 mm (0.6 in) |
| 1950 | 31.5 mm (1.2 in) |
| 1951 | 41.1 mm (1.6 in) |
| 1952 | 34.3 mm (1.4 in) |
| 1953 | 20.8 mm (0.8 in) |
| 1954 | 33.5 mm (1.3 in) |
| 1955 | 34.8 mm (1.4 in) |
| 1956 | 28.7 mm (1.1 in) |
| 1957 | 32.5 mm (1.3 in) |
| 1958 | 28.4 mm (1.1 in) |
| 1959 | 23.4 mm (0.9 in) |
| 1960 | 66.0 mm (2.6 in) |
| 1961 | 27.9 mm (1.1 in) |
| 1962 | 71.1 mm (2.8 in) |
| 1963 | 46.2 mm (1.8 in) |
| 1964 | 45.2 mm (1.8 in) |
| 1965 | 22.4 mm (0.9 in) |
| 1966 | 31.5 mm (1.2 in) |
| 1967 | 59.4 mm (2.3 in) |
| 1968 | 46.7 mm (1.8 in) |
| 1969 | 29.2 mm (1.1 in) |
| 1970 | 30.7 mm (1.2 in) |
| 1971 | 49.5 mm (1.9 in) |
| 1972 | 41.4 mm (1.6 in) |
| 1973 | 41.7 mm (1.6 in) |
| 1974 | 40.6 mm (1.6 in) |
| 1975 | 31.0 mm (1.2 in) |
| 1976 | 26.7 mm (1.1 in) |
| 1977 | 23.9 mm (0.9 in) |
| 1978 | 29.0 mm (1.1 in) |
| 1979 | 50.3 mm (2.0 in) |
| 1980 | 46.5 mm (1.8 in) |
| 1981 | 61.5 mm (2.4 in) |
| 1982 | 42.2 mm (1.7 in) |
| 1983 | 26.2 mm (1.0 in) |
| 1984 | 25.7 mm (1.0 in) |
| 1985 | 36.6 mm (1.4 in) |
| 1986 | 31.2 mm (1.2 in) |
| 1987 | 28.4 mm (1.1 in) |
| 1988 | 25.9 mm (1.0 in) |
| 1989 | 29.5 mm (1.2 in) |
| 1990 | 39.1 mm (1.5 in) |
| 1991 | 29.2 mm (1.1 in) |
| 1992 | 36.3 mm (1.4 in) |
| 1993 | 48.3 mm (1.9 in) |
| 1994 | 24.1 mm (0.9 in) |
| 1995 | 37.6 mm (1.5 in) |
| 1997 | 27.4 mm (1.1 in) |
| 1998 | 28.7 mm (1.1 in) |
| 1999 | 43.7 mm (1.7 in) |
| 2000 | 20.3 mm (0.8 in) |
| 2001 | 24.1 mm (0.9 in) |
| 2002 | 29.0 mm (1.1 in) |
| 2003 | 29.5 mm (1.2 in) |
| 2004 | 29.2 mm (1.1 in) |
| 2005 | 67.1 mm (2.6 in) |
| 2006 | 50.3 mm (2.0 in) |
| 2007 | 24.6 mm (1.0 in) |
| 2008 | 43.2 mm (1.7 in) |
| 2009 | 28.2 mm (1.1 in) |
| 2010 | 17.0 mm (0.7 in) |
| 2011 | 39.9 mm (1.6 in) |
| 2012 | 31.8 mm (1.3 in) |
| 2013 | 8.4 mm (0.33 in) |
| 2014 | 37.1 mm (1.5 in) |
| 2015 | 30.0 mm (1.2 in) |
| 2016 | 33.5 mm (1.3 in) |
| 2017 | 53.8 mm (2.1 in) |
| 2018 | 31.5 mm (1.2 in) |
| 2019 | 57.2 mm (2.3 in) |
| 2020 | 50.8 mm (2.0 in) |
| 2021 | 45.7 mm (1.8 in) |
| 2022 | 34.8 mm (1.4 in) |
| 2023 | 152.4 mm (6.0 in) |
| 2024 | 50.8 mm (2.0 in) |
| 2025 | 48.3 mm (1.9 in) |
| 2026 | 0.0 mm (0.00 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1921 | 68.5 mm (2.7 in) |
| 1922 | 62.1 mm (2.4 in) |
| 1923 | 48.7 mm (1.9 in) |
| 1924 | 31.3 mm (1.2 in) |
| 1925 | 43.9 mm (1.7 in) |
| 1926 | 60.0 mm (2.4 in) |
| 1927 | 76.9 mm (3.0 in) |
| 1928 | 92.0 mm (3.6 in) |
| 1929 | 46.9 mm (1.8 in) |
| 1930 | 56.9 mm (2.2 in) |
| 1931 | 104.4 mm (4.1 in) |
| 1932 | 41.4 mm (1.6 in) |
| 1933 | 38.3 mm (1.5 in) |
| 1934 | 39.5 mm (1.6 in) |
| 1935 | 102.6 mm (4.0 in) |
| 1936 | 68.3 mm (2.7 in) |
| 1937 | 85.3 mm (3.4 in) |
| 1938 | 62.5 mm (2.5 in) |
| 1939 | 71.4 mm (2.8 in) |
| 1940 | 62.4 mm (2.5 in) |
| 1941 | 107.5 mm (4.2 in) |
| 1942 | 96.8 mm (3.8 in) |
| 1943 | 137.9 mm (5.4 in) |
| 1944 | 60.7 mm (2.4 in) |
| 1945 | 53.4 mm (2.1 in) |
| 1946 | 56.7 mm (2.2 in) |
| 1947 | 53.9 mm (2.1 in) |
| 1948 | 53.9 mm (2.1 in) |
| 1949 | 48.3 mm (1.9 in) |
| 1950 | 72.3 mm (2.8 in) |
| 1951 | 103.6 mm (4.1 in) |
| 1952 | 53.1 mm (2.1 in) |
| 1953 | 35.5 mm (1.4 in) |
| 1954 | 57.1 mm (2.2 in) |
| 1955 | 91.4 mm (3.6 in) |
| 1956 | 69.0 mm (2.7 in) |
| 1957 | 47.2 mm (1.9 in) |
| 1958 | 50.6 mm (2.0 in) |
| 1959 | 52.9 mm (2.1 in) |
| 1960 | 74.4 mm (2.9 in) |
| 1961 | 59.1 mm (2.3 in) |
| 1962 | 198.1 mm (7.8 in) |
| 1963 | 73.1 mm (2.9 in) |
| 1964 | 92.7 mm (3.6 in) |
| 1965 | 66.3 mm (2.6 in) |
| 1966 | 58.6 mm (2.3 in) |
| 1967 | 82.0 mm (3.2 in) |
| 1968 | 63.4 mm (2.5 in) |
| 1969 | 78.9 mm (3.1 in) |
| 1970 | 66.3 mm (2.6 in) |
| 1971 | 60.4 mm (2.4 in) |
| 1972 | 65.4 mm (2.6 in) |
| 1973 | 59.9 mm (2.4 in) |
| 1974 | 127.5 mm (5.0 in) |
| 1975 | 63.7 mm (2.5 in) |
| 1976 | 29.0 mm (1.1 in) |
| 1977 | 63.8 mm (2.5 in) |
| 1978 | 54.9 mm (2.2 in) |
| 1979 | 102.4 mm (4.0 in) |
| 1980 | 75.4 mm (3.0 in) |
| 1981 | 111.9 mm (4.4 in) |
| 1982 | 74.0 mm (2.9 in) |
| 1983 | 67.8 mm (2.7 in) |
| 1984 | 52.0 mm (2.0 in) |
| 1985 | 54.5 mm (2.1 in) |
| 1986 | 77.2 mm (3.0 in) |
| 1987 | 63.3 mm (2.5 in) |
| 1988 | 47.5 mm (1.9 in) |
| 1989 | 63.5 mm (2.5 in) |
| 1990 | 56.6 mm (2.2 in) |
| 1991 | 63.1 mm (2.5 in) |
| 1992 | 60.7 mm (2.4 in) |
| 1993 | 79.5 mm (3.1 in) |
| 1994 | 46.8 mm (1.8 in) |
| 1995 | 77.0 mm (3.0 in) |
| 1997 | 40.8 mm (1.6 in) |
| 1998 | 66.2 mm (2.6 in) |
| 1999 | 63.0 mm (2.5 in) |
| 2000 | 39.9 mm (1.6 in) |
| 2001 | 30.4 mm (1.2 in) |
| 2002 | 76.3 mm (3.0 in) |
| 2003 | 50.8 mm (2.0 in) |
| 2004 | 68.8 mm (2.7 in) |
| 2005 | 69.7 mm (2.7 in) |
| 2006 | 75.5 mm (3.0 in) |
| 2007 | 45.0 mm (1.8 in) |
| 2008 | 53.2 mm (2.1 in) |
| 2009 | 45.5 mm (1.8 in) |
| 2010 | 55.0 mm (2.2 in) |
| 2011 | 52.7 mm (2.1 in) |
| 2012 | 0.0 mm (0.00 in) |
| 2013 | 15.8 mm (0.6 in) |
| 2014 | 71.6 mm (2.8 in) |
| 2015 | 43.2 mm (1.7 in) |
| 2016 | 59.1 mm (2.3 in) |
| 2017 | 67.3 mm (2.6 in) |
| 2018 | 54.7 mm (2.2 in) |
| 2019 | 65.8 mm (2.6 in) |
| 2020 | 67.6 mm (2.7 in) |
| 2021 | 90.2 mm (3.6 in) |
| 2022 | 52.8 mm (2.1 in) |
| 2023 | 172.2 mm (6.8 in) |
| 2024 | 145.9 mm (5.7 in) |
| 2025 | 110.8 mm (4.4 in) |
| 2026 | 0.0 mm (0.00 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1921 | 20 days |
| 1922 | 23 days |
| 1923 | 48 days |
| 1924 | 26 days |
| 1925 | 44 days |
| 1926 | 55 days |
| 1927 | 77 days |
| 1928 | 45 days |
| 1929 | 96 days |
| 1930 | 80 days |
| 1931 | 46 days |
| 1932 | 86 days |
| 1933 | 53 days |
| 1934 | 54 days |
| 1935 | 42 days |
| 1936 | 57 days |
| 1937 | 67 days |
| 1938 | 40 days |
| 1939 | 67 days |
| 1940 | 76 days |
| 1941 | 31 days |
| 1942 | 62 days |
| 1943 | 89 days |
| 1944 | 39 days |
| 1945 | 49 days |
| 1946 | 51 days |
| 1947 | 65 days |
| 1948 | 52 days |
| 1949 | 60 days |
| 1950 | 66 days |
| 1951 | 83 days |
| 1952 | 42 days |
| 1953 | 67 days |
| 1954 | 74 days |
| 1955 | 73 days |
| 1956 | 65 days |
| 1957 | 108 days |
| 1958 | 33 days |
| 1959 | 65 days |
| 1960 | 86 days |
| 1961 | 63 days |
| 1962 | 123 days |
| 1963 | 75 days |
| 1964 | 75 days |
| 1965 | 68 days |
| 1966 | 82 days |
| 1967 | 51 days |
| 1968 | 71 days |
| 1969 | 75 days |
| 1970 | 81 days |
| 1971 | 77 days |
| 1972 | 106 days |
| 1973 | 69 days |
| 1974 | 64 days |
| 1975 | 47 days |
| 1976 | 50 days |
| 1977 | 64 days |
| 1978 | 59 days |
| 1979 | 64 days |
| 1980 | 61 days |
| 1981 | 103 days |
| 1982 | 56 days |
| 1983 | 47 days |
| 1984 | 47 days |
| 1985 | 59 days |
| 1986 | 94 days |
| 1987 | 53 days |
| 1988 | 59 days |
| 1989 | 45 days |
| 1990 | 52 days |
| 1991 | 46 days |
| 1992 | 75 days |
| 1993 | 69 days |
| 1994 | 96 days |
| 1995 | 85 days |
| 1997 | 26 days |
| 1998 | 43 days |
| 1999 | 80 days |
| 2000 | 54 days |
| 2001 | 64 days |
| 2002 | 98 days |
| 2003 | 53 days |
| 2004 | 82 days |
| 2005 | 82 days |
| 2006 | 123 days |
| 2007 | 47 days |
| 2008 | 116 days |
| 2009 | 114 days |
| 2010 | 48 days |
| 2011 | 64 days |
| 2012 | 31 days |
| 2013 | 56 days |
| 2014 | 43 days |
| 2015 | 69 days |
| 2016 | 106 days |
| 2017 | 86 days |
| 2018 | 78 days |
| 2019 | 67 days |
| 2020 | 79 days |
| 2021 | 144 days |
| 2022 | 60 days |
| 2023 | 69 days |
| 2024 | 109 days |
| 2025 | 45 days |
| 2026 | 31 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
80 years with a frostAcross 80 years with a frost, the median last spring frost at Hat Creek falls on 30 May and the median first autumn frost on 19 September, which leaves a median of 117 days between them.
In 1983 to 2024 the median growing season was 124 days. That is 16 days more than in 1921 to 1959.
Fitted over all years, the growing season changes by +1.8 days per decade at this station.
| Measure | Median, all years | Earliest period (1921 to 1959) | Recent period (1983 to 2024) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 30 May | 2 June | 21 May | 12 days earlier | -1.0 days per decade |
| First autumn frost | 19 September | 16 September | 21 September | 5 days later | +0.8 days per decade |
| Growing days | 117 days | 108 days | 124 days | 16 days more | +1.8 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
89 years, 1923 to 2024A day with at least 34.0 mm (1.3 in) of rain is expected about once in 2 years. A day with at least 98.5 mm (3.9 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 34.0 mm (1.3 in) | |
| 5 years | 46.4 mm (1.8 in) | |
| 10 years | 56.3 mm (2.2 in) | |
| 25 years | 71.0 mm (2.8 in) | |
| 50 years | 83.8 mm (3.3 in) | |
| 100 years | 98.5 mm (3.9 in) | Longer than the 89 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, 89 years of values from 1923 to 2024.
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: 152.4 mm (6.0 in) in 2023; 71.1 mm (2.8 in) in 1962; 67.1 mm (2.6 in) in 2005.
Station Changes
2 suspected2 changes were suspected in the annual mean temperature of Hat Creek, at 1935 and 1953. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1935 ran 0.7 C (1.2 F) higher than in the years before (possible change).
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1953 ran 0.4 C (0.7 F) lower than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1935 | +0.7 | +1.2 | possible | 5 |
| 1953 | -0.4 | -0.7 | 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
2005 to 2024 against 1961 to 1990Over 2005 to 2024, Hat Creek had a mean temperature of 10.4 C (50.7 F) and 512.6 mm (20.2 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Callahan (United States, 116 km away), Reserve Rs (United States, 1,383 km away) and Dayton 1 WSW (United States, 663 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Callahan | United States | 116 km (72 mi) | 10.2 C (50.4 F) | 528.3 mm (20.8 in) | 0.63 |
| Reserve Rs | United States | 1,383 km (859 mi) | 10.4 C (50.8 F) | 414.7 mm (16.3 in) | 0.63 |
| Dayton 1 WSW | United States | 663 km (412 mi) | 10.6 C (51.0 F) | 471.5 mm (18.6 in) | 0.63 |
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 (2025-12-31).