Cheyenne Weather Records (USW00024018)
Record envelope, standing records and threshold days for Cheyenne (USW00024018), Wyoming, United States, with 112 years of record.
Key Facts for Cheyenne
- Cheyenne (USW00024018) is a weather station in Wyoming, United States at 41.15 latitude and -104.81 longitude, 1,888 m (6,193 ft) above sea level.
- The station reports from 1915 to 2026, 112 years of record.
- 1,464 records set at Cheyenne still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Cheyenne set a daily record high minimum temperature of 12.8 C (55.0 F) on 11 October 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: Wyoming, United States, 41.15 latitude, -104.81 longitude.
- Elevation: 1,888 m (6,193 ft).
- Period of record: 1915 to 2026, 112 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
16 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) | -34.4 C (-29.9 F) | 15.0 C (59.0 F) | -21.7 C (-7.1 F) |
| Feb | 21.7 C (71.1 F) | -36.7 C (-34.1 F) | 16.7 C (62.1 F) | -16.1 C (3.0 F) |
| Mar | 28.3 C (82.9 F) | -29.4 C (-20.9 F) | 28.3 C (82.9 F) | -14.4 C (6.1 F) |
| Apr | 28.9 C (84.0 F) | -22.2 C (-8.0 F) | 25.6 C (78.1 F) | -5.6 C (21.9 F) |
| May | 32.8 C (91.0 F) | -12.7 C (9.1 F) | 28.9 C (84.0 F) | -3.9 C (25.0 F) |
| Jun | 37.8 C (100.0 F) | -3.9 C (25.0 F) | 31.7 C (89.1 F) | 3.3 C (37.9 F) |
| Jul | 37.8 C (100.0 F) | 0.6 C (33.1 F) | 37.2 C (99.0 F) | 11.1 C (52.0 F) |
| Aug | 36.7 C (98.1 F) | 2.2 C (36.0 F) | 36.7 C (98.1 F) | 8.3 C (46.9 F) |
| Sep | 36.1 C (97.0 F) | -13.3 C (8.1 F) | 31.1 C (88.0 F) | 5.0 C (41.0 F) |
| Oct | 29.4 C (84.9 F) | -18.3 C (-0.9 F) | 28.9 C (84.0 F) | 5.6 C (42.1 F) |
| Nov | 23.9 C (75.0 F) | -29.4 C (-20.9 F) | n/a | n/a |
| Dec | 21.1 C (70.0 F) | -33.3 C (-27.9 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1915 | 15 |
| 1916 | 15 |
| 1917 | 19 |
| 1918 | 12 |
| 1919 | 19 |
| 1920 | 17 |
| 1921 | 8 |
| 1922 | 15 |
| 1923 | 2 |
| 1924 | 19 |
| 1925 | 2 |
| 1926 | 11 |
| 1927 | 11 |
| 1928 | 8 |
| 1929 | 17 |
| 1930 | 16 |
| 1931 | 17 |
| 1932 | 20 |
| 1933 | 20 |
| 1934 | 17 |
| 1935 | 13 |
| 1936 | 18 |
| 1937 | 17 |
| 1938 | 4 |
| 1939 | 16 |
| 1940 | 11 |
| 1941 | 7 |
| 1942 | 13 |
| 1943 | 6 |
| 1944 | 4 |
| 1945 | 13 |
| 1946 | 10 |
| 1947 | 15 |
| 1948 | 19 |
| 1949 | 9 |
| 1950 | 25 |
| 1951 | 17 |
| 1952 | 12 |
| 1953 | 9 |
| 1954 | 22 |
| 1955 | 10 |
| 1956 | 9 |
| 1957 | 2 |
| 1958 | 14 |
| 1959 | 19 |
| 1960 | 23 |
| 1961 | 4 |
| 1962 | 26 |
| 1963 | 10 |
| 1964 | 11 |
| 1965 | 17 |
| 1966 | 10 |
| 1967 | 9 |
| 1968 | 7 |
| 1969 | 14 |
| 1970 | 7 |
| 1971 | 11 |
| 1972 | 15 |
| 1973 | 10 |
| 1974 | 5 |
| 1975 | 9 |
| 1976 | 3 |
| 1977 | 9 |
| 1978 | 8 |
| 1979 | 11 |
| 1980 | 17 |
| 1981 | 14 |
| 1982 | 10 |
| 1983 | 23 |
| 1984 | 8 |
| 1985 | 21 |
| 1986 | 7 |
| 1987 | 10 |
| 1988 | 9 |
| 1989 | 25 |
| 1990 | 21 |
| 1991 | 12 |
| 1992 | 10 |
| 1993 | 12 |
| 1994 | 3 |
| 1995 | 12 |
| 1996 | 10 |
| 1997 | 10 |
| 1998 | 6 |
| 1999 | 7 |
| 2000 | 11 |
| 2001 | 5 |
| 2002 | 19 |
| 2003 | 26 |
| 2004 | 11 |
| 2005 | 11 |
| 2006 | 15 |
| 2007 | 10 |
| 2008 | 14 |
| 2009 | 18 |
| 2010 | 7 |
| 2011 | 6 |
| 2012 | 17 |
| 2013 | 20 |
| 2014 | 13 |
| 2015 | 20 |
| 2016 | 9 |
| 2017 | 16 |
| 2018 | 5 |
| 2019 | 8 |
| 2020 | 35 |
| 2021 | 24 |
| 2022 | 23 |
| 2023 | 8 |
| 2024 | 14 |
| 2025 | 14 |
| 2026 | 25 |
All-Time Record Progression
9 new records| Date | Kind | Detail |
|---|---|---|
| 1951-01-28 | Record low maximum temperature | Record low maximum temperature -23.9 C (-11.0 F) |
| 1960-07-31 | Record high minimum temperature | Record high minimum temperature 20.0 C (68.0 F) |
| 1963-01-11 | Record low maximum temperature | Record low maximum temperature -29.4 C (-20.9 F) |
| 1973-07-19 | Record daily precipitation | Record daily precipitation 86.6 mm (3.4 in) |
| 1979-11-20 | Record daily snowfall | Record daily snowfall 50.3 cm (19.8 in) |
| 1979-11-21 | Record snow depth | Record snow depth 61.0 cm (24.0 in) |
| 1979-11-22 | Record snow depth | Record snow depth 66.0 cm (26.0 in) |
| 1985-08-01 | Record daily precipitation | Record daily precipitation 153.9 mm (6.1 in) |
| 2021-03-14 | Record daily snowfall | Record daily snowfall 57.7 cm (22.7 in) |
Wettest Day of Each Month
Aug: 153.9 mm (6.1 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 33.5 mm (1.3 in) | 3 January 1949 |
| Feb | 39.9 mm (1.6 in) | 19 February 1953 |
| Mar | 49.5 mm (1.9 in) | 14 March 2021 |
| Apr | 62.2 mm (2.4 in) | 24 April 1929 |
| May | 50.8 mm (2.0 in) | 2 May 1942 |
| Jun | 77.7 mm (3.1 in) | 14 June 1926 |
| Jul | 86.6 mm (3.4 in) | 19 July 1973 |
| Aug | 153.9 mm (6.1 in) | 1 August 1985 |
| Sep | 68.3 mm (2.7 in) | 8 September 1973 |
| Oct | 30.2 mm (1.2 in) | 15 October 1947 |
| Nov | 41.4 mm (1.6 in) | 20 November 1979 |
| Dec | 32.5 mm (1.3 in) | 13 December 1925 |
Period of Record Coverage
1915 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1915 | 365 | 100% | Yes |
| 1916 | 365 | 100% | Yes |
| 1917 | 364 | 100% | Yes |
| 1918 | 364 | 100% | Yes |
| 1919 | 365 | 100% | Yes |
| 1920 | 366 | 100% | Yes |
| 1921 | 365 | 100% | Yes |
| 1922 | 365 | 100% | Yes |
| 1923 | 365 | 100% | Yes |
| 1924 | 366 | 100% | Yes |
| 1925 | 364 | 100% | Yes |
| 1926 | 365 | 100% | Yes |
| 1927 | 364 | 100% | Yes |
| 1928 | 366 | 100% | Yes |
| 1929 | 365 | 100% | Yes |
| 1930 | 365 | 100% | Yes |
| 1931 | 365 | 100% | Yes |
| 1932 | 365 | 100% | Yes |
| 1933 | 365 | 100% | Yes |
| 1934 | 364 | 100% | Yes |
| 1935 | 365 | 100% | Yes |
| 1936 | 366 | 100% | Yes |
| 1937 | 365 | 100% | Yes |
| 1938 | 365 | 100% | Yes |
| 1939 | 363 | 99% | Yes |
| 1940 | 366 | 100% | Yes |
| 1941 | 364 | 100% | Yes |
| 1942 | 364 | 100% | Yes |
| 1943 | 365 | 100% | Yes |
| 1944 | 366 | 100% | Yes |
| 1945 | 365 | 100% | Yes |
| 1946 | 365 | 100% | Yes |
| 1947 | 364 | 100% | Yes |
| 1948 | 366 | 100% | Yes |
| 1949 | 365 | 100% | Yes |
| 1950 | 364 | 100% | Yes |
| 1951 | 365 | 100% | Yes |
| 1952 | 365 | 100% | Yes |
| 1953 | 365 | 100% | Yes |
| 1954 | 364 | 100% | Yes |
| 1955 | 365 | 100% | Yes |
| 1956 | 366 | 100% | Yes |
| 1957 | 365 | 100% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 362 | 99% | Yes |
| 1960 | 366 | 100% | Yes |
| 1961 | 365 | 100% | Yes |
| 1962 | 364 | 100% | Yes |
| 1963 | 365 | 100% | Yes |
| 1964 | 366 | 100% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 364 | 100% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 365 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 364 | 99% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 364 | 100% | Yes |
| 1976 | 365 | 100% | Yes |
| 1977 | 364 | 100% | Yes |
| 1978 | 364 | 100% | Yes |
| 1979 | 365 | 100% | Yes |
| 1980 | 366 | 100% | Yes |
| 1981 | 365 | 100% | Yes |
| 1982 | 364 | 100% | Yes |
| 1983 | 365 | 100% | Yes |
| 1984 | 366 | 100% | Yes |
| 1985 | 365 | 100% | Yes |
| 1986 | 363 | 99% | Yes |
| 1987 | 365 | 100% | Yes |
| 1988 | 366 | 100% | Yes |
| 1989 | 365 | 100% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 365 | 100% | Yes |
| 1992 | 366 | 100% | Yes |
| 1993 | 365 | 100% | Yes |
| 1994 | 365 | 100% | Yes |
| 1995 | 365 | 100% | Yes |
| 1996 | 366 | 100% | Yes |
| 1997 | 365 | 100% | Yes |
| 1998 | 365 | 100% | Yes |
| 1999 | 365 | 100% | Yes |
| 2000 | 366 | 100% | Yes |
| 2001 | 365 | 100% | Yes |
| 2002 | 365 | 100% | Yes |
| 2003 | 365 | 100% | Yes |
| 2004 | 366 | 100% | Yes |
| 2005 | 365 | 100% | Yes |
| 2006 | 365 | 100% | Yes |
| 2007 | 365 | 100% | Yes |
| 2008 | 366 | 100% | Yes |
| 2009 | 365 | 100% | Yes |
| 2010 | 365 | 100% | Yes |
| 2011 | 365 | 100% | Yes |
| 2012 | 366 | 100% | Yes |
| 2013 | 365 | 100% | Yes |
| 2014 | 365 | 100% | Yes |
| 2015 | 365 | 100% | Yes |
| 2016 | 366 | 100% | Yes |
| 2017 | 365 | 100% | Yes |
| 2018 | 365 | 100% | Yes |
| 2019 | 365 | 100% | Yes |
| 2020 | 366 | 100% | Yes |
| 2021 | 365 | 100% | Yes |
| 2022 | 365 | 100% | Yes |
| 2023 | 364 | 100% | Yes |
| 2024 | 366 | 100% | Yes |
| 2025 | 365 | 100% | Yes |
| 2026 | 284 | 78% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 11 October 2026 | Cheyenne, US | daily high min (Provisional) | 12.8 C (55.0 F) | 1.1 C (2.0 F) | 48 years | 26 of 100 (Routine) |
| 10 October 2026 | Cheyenne, US | daily high min (Provisional) | 11.1 C (52.0 F) | 1.1 C (2.0 F) | 11 years | 15 of 100 (Routine) |
| 9 October 2026 | Cheyenne, US | daily high max (Provisional) | 27.8 C (82.0 F) | 0.6 C (1.1 F) | 84 years | 35 of 100 (Notable) |
| 6 October 2026 | Cheyenne, US | daily high min (Provisional) | 12.2 C (54.0 F) | 1.6 C (2.9 F) | 63 years | 31 of 100 (Routine) |
| 5 October 2026 | Cheyenne, US | daily high max (Provisional) | 28.9 C (84.0 F) | 1.1 C (2.0 F) | 79 years | 34 of 100 (Routine) |
| 28 September 2026 | Cheyenne, US | daily high min (Provisional) | 12.2 C (54.0 F) | 0.5 C (0.9 F) | 104 years | 41 of 100 (Notable) |
| 24 September 2026 | Cheyenne, US | daily high min (Tie, Provisional) | 11.7 C (53.1 F) | tie | 60 years | 7 of 100 (Routine) |
| 30 August 2026 | Cheyenne, US | daily high min (Tie, Provisional) | 15.6 C (60.1 F) | tie | 96 years | 9 of 100 (Routine) |
| 11 August 2026 | Cheyenne, US | daily high min | 17.8 C (64.0 F) | 0.6 C (1.1 F) | 31 years | 21 of 100 (Routine) |
| 9 August 2026 | Cheyenne, US | daily high min | 17.8 C (64.0 F) | 0.6 C (1.1 F) | 33 years | 22 of 100 (Routine) |
| 8 August 2026 | Cheyenne, US | daily high max | 36.1 C (97.0 F) | 0.5 C (0.9 F) | 56 years | 28 of 100 (Routine) |
| 2 August 2026 | Cheyenne, US | monthly high max (Tie) | 36.7 C (98.1 F) | tie | 18 years | 6 of 100 (Routine) |
| 28 July 2026 | Cheyenne, US | daily high min (Tie) | 17.8 C (64.0 F) | tie | 92 years | 9 of 100 (Routine) |
| 27 July 2026 | Cheyenne, US | daily high min (Tie) | 18.9 C (66.0 F) | tie | 96 years | 9 of 100 (Routine) |
| 26 July 2026 | Cheyenne, US | daily high max | 37.2 C (99.0 F) | 2.8 C (5.0 F) | 79 years | 39 of 100 (Notable) |
| 26 July 2026 | Cheyenne, US | daily high min (Tie) | 18.9 C (66.0 F) | tie | 95 years | 9 of 100 (Routine) |
| 25 July 2026 | Cheyenne, US | daily high max | 36.1 C (97.0 F) | 1.1 C (2.0 F) | 95 years | 40 of 100 (Notable) |
| 8 July 2026 | Cheyenne, US | daily rain | 20.6 mm (0.8 in) | 4.3 mm (0.17 in) | 68 years | 20 of 100 (Routine) |
| 16 May 2026 | Cheyenne, US | daily high min (Tie) | 11.1 C (52.0 F) | tie | 24 years | 4 of 100 (Routine) |
| 14 May 2026 | Cheyenne, US | daily high min | 13.9 C (57.0 F) | 1.7 C (3.1 F) | 12 years | 17 of 100 (Routine) |
Climate Trend
111 complete years, 1915 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1915 | 6.5 C | -1.26 C |
| 1916 | 6.3 C | -1.43 C |
| 1917 | 6.1 C | -1.66 C |
| 1918 | 6.8 C | -0.94 C |
| 1919 | 7.3 C | -0.38 C |
| 1920 | 6.5 C | -1.25 C |
| 1921 | 8.0 C | +0.32 C |
| 1922 | 7.0 C | -0.75 C |
| 1923 | 6.5 C | -1.23 C |
| 1924 | 6.2 C | -1.52 C |
| 1925 | 7.6 C | -0.11 C |
| 1926 | 7.4 C | -0.29 C |
| 1927 | 6.9 C | -0.84 C |
| 1928 | 6.9 C | -0.81 C |
| 1929 | 6.1 C | -1.58 C |
| 1930 | 7.0 C | -0.69 C |
| 1931 | 8.1 C | +0.40 C |
| 1932 | 6.8 C | -0.90 C |
| 1933 | 8.4 C | +0.67 C |
| 1934 | 9.4 C | +1.68 C |
| 1935 | 7.5 C | -0.20 C |
| 1936 | 7.8 C | +0.08 C |
| 1937 | 6.9 C | -0.80 C |
| 1938 | 7.9 C | +0.14 C |
| 1939 | 8.2 C | +0.45 C |
| 1940 | 8.1 C | +0.34 C |
| 1941 | 7.7 C | -0.01 C |
| 1942 | 7.0 C | -0.75 C |
| 1943 | 7.9 C | +0.23 C |
| 1944 | 7.1 C | -0.66 C |
| 1945 | 6.9 C | -0.79 C |
| 1946 | 7.9 C | +0.17 C |
| 1947 | 7.0 C | -0.68 C |
| 1948 | 7.0 C | -0.71 C |
| 1949 | 7.1 C | -0.63 C |
| 1950 | 7.2 C | -0.49 C |
| 1951 | 6.0 C | -1.71 C |
| 1952 | 7.5 C | -0.17 C |
| 1953 | 8.2 C | +0.45 C |
| 1954 | 9.1 C | +1.38 C |
| 1955 | 7.2 C | -0.47 C |
| 1956 | 7.9 C | +0.16 C |
| 1957 | 7.1 C | -0.61 C |
| 1958 | 7.9 C | +0.20 C |
| 1959 | 7.3 C | -0.39 C |
| 1960 | 8.0 C | +0.32 C |
| 1961 | 7.2 C | -0.51 C |
| 1962 | 7.7 C | -0.04 C |
| 1963 | 8.6 C | +0.91 C |
| 1964 | 7.1 C | -0.62 C |
| 1965 | 7.4 C | -0.32 C |
| 1966 | 8.4 C | +0.67 C |
| 1967 | 7.7 C | +0.01 C |
| 1968 | 7.8 C | +0.06 C |
| 1969 | 8.2 C | +0.47 C |
| 1970 | 7.5 C | -0.21 C |
| 1971 | 7.1 C | -0.59 C |
| 1972 | 7.1 C | -0.64 C |
| 1973 | 7.2 C | -0.54 C |
| 1974 | 8.0 C | +0.27 C |
| 1975 | 6.7 C | -0.99 C |
| 1976 | 7.4 C | -0.31 C |
| 1977 | 7.9 C | +0.21 C |
| 1978 | 6.9 C | -0.78 C |
| 1979 | 7.8 C | +0.05 C |
| 1980 | 8.3 C | +0.61 C |
| 1981 | 9.0 C | +1.33 C |
| 1982 | 7.1 C | -0.58 C |
| 1983 | 6.8 C | -0.93 C |
| 1984 | 6.5 C | -1.26 C |
| 1985 | 6.5 C | -1.18 C |
| 1986 | 8.5 C | +0.78 C |
| 1987 | 8.1 C | +0.39 C |
| 1988 | 8.0 C | +0.31 C |
| 1989 | 7.6 C | -0.11 C |
| 1990 | 7.6 C | -0.13 C |
| 1991 | 8.0 C | +0.26 C |
| 1992 | 8.3 C | +0.62 C |
| 1993 | 6.8 C | -0.89 C |
| 1994 | 8.9 C | +1.15 C |
| 1995 | 7.9 C | +0.20 C |
| 1996 | 7.4 C | -0.29 C |
| 1997 | 7.1 C | -0.58 C |
| 1998 | 8.2 C | +0.44 C |
| 1999 | 8.5 C | +0.77 C |
| 2000 | 8.3 C | +0.58 C |
| 2001 | 8.6 C | +0.85 C |
| 2002 | 7.9 C | +0.18 C |
| 2003 | 8.7 C | +0.99 C |
| 2004 | 8.5 C | +0.77 C |
| 2005 | 8.8 C | +1.04 C |
| 2006 | 8.5 C | +0.82 C |
| 2007 | 8.4 C | +0.64 C |
| 2008 | 7.5 C | -0.26 C |
| 2009 | 7.2 C | -0.53 C |
| 2010 | 7.9 C | +0.22 C |
| 2011 | 7.6 C | -0.07 C |
| 2012 | 9.4 C | +1.73 C |
| 2013 | 7.7 C | -0.02 C |
| 2014 | 7.9 C | +0.14 C |
| 2015 | 9.0 C | +1.27 C |
| 2016 | 9.2 C | +1.53 C |
| 2017 | 9.1 C | +1.36 C |
| 2018 | 8.5 C | +0.75 C |
| 2019 | 7.7 C | +0.00 C |
| 2020 | 8.9 C | +1.15 C |
| 2021 | 9.0 C | +1.25 C |
| 2022 | 8.6 C | +0.86 C |
| 2023 | 8.6 C | +0.84 C |
| 2024 | 9.6 C | +1.89 C |
| 2025 | 9.1 C | +1.41 C |
The annual mean temperature here has risen by 0.1 C (0.1 to 0.2) per decade over 1915 to 2025. In Fahrenheit: 0.3 F (0.2 to 0.3) per decade. The slope is a straight line fitted to 111 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.1 C (0.1 to 0.2) per decade | 0.3 F (0.2 to 0.3) per decade | 1915 to 2025 | 111 | Rise |
| Mean daily maximum | 0.2 C (0.1 to 0.2) per decade | 0.3 F (0.2 to 0.4) per decade | 1915 to 2025 | 111 | Rise |
| Mean daily minimum | 0.1 C (0.1 to 0.1) per decade | 0.2 F (0.1 to 0.3) per decade | 1915 to 2025 | 111 | 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
1915 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 37.8 C (100.0 F) | 1939 | 34.4 C (93.9 F) | 112 |
| Coldest night (TNn) | -36.7 C (-34.1 F) | 1936 | -26.1 C (-15.0 F) | 112 |
| Wettest day (Rx1day) | 153.9 mm (6.1 in) | 1985 | 33.0 mm (1.3 in) | 112 |
| Wettest five days (Rx5day) | 167.4 mm (6.6 in) | 1985 | 52.4 mm (2.1 in) | 112 |
| Longest dry spell (CDD) | 67 days | 1972 | 32 days | 112 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1915 | 31.7 C (89.1 F) |
| 1916 | 31.1 C (88.0 F) |
| 1917 | 31.1 C (88.0 F) |
| 1918 | 33.3 C (91.9 F) |
| 1919 | 34.4 C (93.9 F) |
| 1920 | 32.8 C (91.0 F) |
| 1921 | 31.7 C (89.1 F) |
| 1922 | 33.9 C (93.0 F) |
| 1923 | 30.0 C (86.0 F) |
| 1924 | 32.8 C (91.0 F) |
| 1925 | 35.0 C (95.0 F) |
| 1926 | 33.3 C (91.9 F) |
| 1927 | 32.8 C (91.0 F) |
| 1928 | 32.2 C (90.0 F) |
| 1929 | 32.8 C (91.0 F) |
| 1930 | 34.4 C (93.9 F) |
| 1931 | 35.0 C (95.0 F) |
| 1932 | 32.8 C (91.0 F) |
| 1933 | 33.9 C (93.0 F) |
| 1934 | 36.1 C (97.0 F) |
| 1935 | 33.9 C (93.0 F) |
| 1936 | 35.6 C (96.1 F) |
| 1937 | 34.4 C (93.9 F) |
| 1938 | 35.6 C (96.1 F) |
| 1939 | 37.8 C (100.0 F) |
| 1940 | 36.1 C (97.0 F) |
| 1941 | 33.9 C (93.0 F) |
| 1942 | 34.4 C (93.9 F) |
| 1943 | 34.4 C (93.9 F) |
| 1944 | 34.4 C (93.9 F) |
| 1945 | 33.3 C (91.9 F) |
| 1946 | 34.4 C (93.9 F) |
| 1947 | 34.4 C (93.9 F) |
| 1948 | 32.8 C (91.0 F) |
| 1949 | 33.3 C (91.9 F) |
| 1950 | 32.2 C (90.0 F) |
| 1951 | 33.3 C (91.9 F) |
| 1952 | 33.9 C (93.0 F) |
| 1953 | 33.3 C (91.9 F) |
| 1954 | 37.8 C (100.0 F) |
| 1955 | 35.0 C (95.0 F) |
| 1956 | 34.4 C (93.9 F) |
| 1957 | 33.3 C (91.9 F) |
| 1958 | 33.3 C (91.9 F) |
| 1959 | 35.0 C (95.0 F) |
| 1960 | 35.6 C (96.1 F) |
| 1961 | 34.4 C (93.9 F) |
| 1962 | 34.4 C (93.9 F) |
| 1963 | 35.0 C (95.0 F) |
| 1964 | 32.8 C (91.0 F) |
| 1965 | 32.2 C (90.0 F) |
| 1966 | 35.0 C (95.0 F) |
| 1967 | 33.3 C (91.9 F) |
| 1968 | 33.9 C (93.0 F) |
| 1969 | 35.6 C (96.1 F) |
| 1970 | 33.9 C (93.0 F) |
| 1971 | 35.0 C (95.0 F) |
| 1972 | 33.9 C (93.0 F) |
| 1973 | 36.7 C (98.1 F) |
| 1974 | 31.7 C (89.1 F) |
| 1975 | 32.2 C (90.0 F) |
| 1976 | 34.4 C (93.9 F) |
| 1977 | 33.9 C (93.0 F) |
| 1978 | 33.9 C (93.0 F) |
| 1979 | 35.6 C (96.1 F) |
| 1980 | 35.0 C (95.0 F) |
| 1981 | 35.0 C (95.0 F) |
| 1982 | 34.4 C (93.9 F) |
| 1983 | 32.8 C (91.0 F) |
| 1984 | 32.2 C (90.0 F) |
| 1985 | 35.0 C (95.0 F) |
| 1986 | 33.9 C (93.0 F) |
| 1987 | 33.3 C (91.9 F) |
| 1988 | 35.0 C (95.0 F) |
| 1989 | 36.1 C (97.0 F) |
| 1990 | 35.6 C (96.1 F) |
| 1991 | 33.3 C (91.9 F) |
| 1992 | 33.3 C (91.9 F) |
| 1993 | 33.9 C (93.0 F) |
| 1994 | 35.6 C (96.1 F) |
| 1995 | 35.0 C (95.0 F) |
| 1996 | 34.4 C (93.9 F) |
| 1997 | 34.4 C (93.9 F) |
| 1998 | 36.1 C (97.0 F) |
| 1999 | 34.4 C (93.9 F) |
| 2000 | 33.9 C (93.0 F) |
| 2001 | 35.6 C (96.1 F) |
| 2002 | 36.7 C (98.1 F) |
| 2003 | 36.7 C (98.1 F) |
| 2004 | 34.4 C (93.9 F) |
| 2005 | 36.7 C (98.1 F) |
| 2006 | 36.1 C (97.0 F) |
| 2007 | 36.1 C (97.0 F) |
| 2008 | 36.7 C (98.1 F) |
| 2009 | 34.4 C (93.9 F) |
| 2010 | 33.9 C (93.0 F) |
| 2011 | 34.4 C (93.9 F) |
| 2012 | 35.6 C (96.1 F) |
| 2013 | 34.4 C (93.9 F) |
| 2014 | 33.9 C (93.0 F) |
| 2015 | 33.9 C (93.0 F) |
| 2016 | 35.6 C (96.1 F) |
| 2017 | 36.1 C (97.0 F) |
| 2018 | 37.2 C (99.0 F) |
| 2019 | 35.0 C (95.0 F) |
| 2020 | 35.6 C (96.1 F) |
| 2021 | 35.6 C (96.1 F) |
| 2022 | 37.2 C (99.0 F) |
| 2023 | 33.9 C (93.0 F) |
| 2024 | 35.6 C (96.1 F) |
| 2025 | 34.4 C (93.9 F) |
| 2026 | 37.2 C (99.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1915 | -22.8 C (-9.0 F) |
| 1916 | -29.4 C (-20.9 F) |
| 1917 | -24.4 C (-11.9 F) |
| 1918 | -26.7 C (-16.1 F) |
| 1919 | -33.3 C (-27.9 F) |
| 1920 | -25.6 C (-14.1 F) |
| 1921 | -22.2 C (-8.0 F) |
| 1922 | -30.0 C (-22.0 F) |
| 1923 | -33.3 C (-27.9 F) |
| 1924 | -26.7 C (-16.1 F) |
| 1925 | -18.9 C (-2.0 F) |
| 1926 | -26.7 C (-16.1 F) |
| 1927 | -28.3 C (-18.9 F) |
| 1928 | -25.0 C (-13.0 F) |
| 1929 | -26.1 C (-15.0 F) |
| 1930 | -34.4 C (-29.9 F) |
| 1931 | -22.2 C (-8.0 F) |
| 1932 | -29.4 C (-20.9 F) |
| 1933 | -30.0 C (-22.0 F) |
| 1934 | -22.8 C (-9.0 F) |
| 1935 | -30.6 C (-23.1 F) |
| 1936 | -36.7 C (-34.1 F) |
| 1937 | -32.2 C (-26.0 F) |
| 1938 | -22.8 C (-9.0 F) |
| 1939 | -23.3 C (-9.9 F) |
| 1940 | -28.3 C (-18.9 F) |
| 1941 | -25.0 C (-13.0 F) |
| 1942 | -32.8 C (-27.0 F) |
| 1943 | -31.1 C (-24.0 F) |
| 1944 | -20.0 C (-4.0 F) |
| 1945 | -23.3 C (-9.9 F) |
| 1946 | -20.6 C (-5.1 F) |
| 1947 | -25.6 C (-14.1 F) |
| 1948 | -28.9 C (-20.0 F) |
| 1949 | -26.7 C (-16.1 F) |
| 1950 | -28.9 C (-20.0 F) |
| 1951 | -32.8 C (-27.0 F) |
| 1952 | -22.2 C (-8.0 F) |
| 1953 | -19.4 C (-2.9 F) |
| 1954 | -24.4 C (-11.9 F) |
| 1955 | -22.8 C (-9.0 F) |
| 1956 | -23.3 C (-9.9 F) |
| 1957 | -26.1 C (-15.0 F) |
| 1958 | -22.2 C (-8.0 F) |
| 1959 | -30.6 C (-23.1 F) |
| 1960 | -28.3 C (-18.9 F) |
| 1961 | -28.9 C (-20.0 F) |
| 1962 | -31.1 C (-24.0 F) |
| 1963 | -32.8 C (-27.0 F) |
| 1964 | -31.1 C (-24.0 F) |
| 1965 | -23.3 C (-9.9 F) |
| 1966 | -28.3 C (-18.9 F) |
| 1967 | -26.1 C (-15.0 F) |
| 1968 | -25.6 C (-14.1 F) |
| 1969 | -22.8 C (-9.0 F) |
| 1970 | -21.7 C (-7.1 F) |
| 1971 | -26.1 C (-15.0 F) |
| 1972 | -31.1 C (-24.0 F) |
| 1973 | -25.0 C (-13.0 F) |
| 1974 | -28.3 C (-18.9 F) |
| 1975 | -22.2 C (-8.0 F) |
| 1976 | -25.0 C (-13.0 F) |
| 1977 | -24.4 C (-11.9 F) |
| 1978 | -26.7 C (-16.1 F) |
| 1979 | -27.2 C (-17.0 F) |
| 1980 | -27.2 C (-17.0 F) |
| 1981 | -26.7 C (-16.1 F) |
| 1982 | -31.7 C (-25.1 F) |
| 1983 | -33.3 C (-27.9 F) |
| 1984 | -33.9 C (-29.0 F) |
| 1985 | -31.7 C (-25.1 F) |
| 1986 | -24.4 C (-11.9 F) |
| 1987 | -25.0 C (-13.0 F) |
| 1988 | -22.2 C (-8.0 F) |
| 1989 | -33.3 C (-27.9 F) |
| 1990 | -33.3 C (-27.9 F) |
| 1991 | -26.1 C (-15.0 F) |
| 1992 | -20.6 C (-5.1 F) |
| 1993 | -26.7 C (-16.1 F) |
| 1994 | -24.4 C (-11.9 F) |
| 1995 | -22.8 C (-9.0 F) |
| 1996 | -29.4 C (-20.9 F) |
| 1997 | -25.6 C (-14.1 F) |
| 1998 | -25.6 C (-14.1 F) |
| 1999 | -17.2 C (1.0 F) |
| 2000 | -19.4 C (-2.9 F) |
| 2001 | -22.8 C (-9.0 F) |
| 2002 | -23.9 C (-11.0 F) |
| 2003 | -25.0 C (-13.0 F) |
| 2004 | -24.4 C (-11.9 F) |
| 2005 | -28.9 C (-20.0 F) |
| 2006 | -28.3 C (-18.9 F) |
| 2007 | -23.9 C (-11.0 F) |
| 2008 | -25.0 C (-13.0 F) |
| 2009 | -28.3 C (-18.9 F) |
| 2010 | -21.7 C (-7.1 F) |
| 2011 | -31.1 C (-24.0 F) |
| 2012 | -20.0 C (-4.0 F) |
| 2013 | -28.2 C (-18.8 F) |
| 2014 | -30.5 C (-22.9 F) |
| 2015 | -21.6 C (-6.9 F) |
| 2016 | -26.6 C (-15.9 F) |
| 2017 | -27.1 C (-16.8 F) |
| 2018 | -25.5 C (-13.9 F) |
| 2019 | -26.6 C (-15.9 F) |
| 2020 | -22.7 C (-8.9 F) |
| 2021 | -26.0 C (-14.8 F) |
| 2022 | -31.6 C (-24.9 F) |
| 2023 | -28.2 C (-18.8 F) |
| 2024 | -30.5 C (-22.9 F) |
| 2025 | -24.3 C (-11.7 F) |
| 2026 | -21.7 C (-7.1 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1915 | 43.7 mm (1.7 in) |
| 1916 | 23.1 mm (0.9 in) |
| 1917 | 40.9 mm (1.6 in) |
| 1918 | 28.2 mm (1.1 in) |
| 1919 | 20.8 mm (0.8 in) |
| 1920 | 40.4 mm (1.6 in) |
| 1921 | 25.4 mm (1.0 in) |
| 1922 | 20.8 mm (0.8 in) |
| 1923 | 48.5 mm (1.9 in) |
| 1924 | 27.7 mm (1.1 in) |
| 1925 | 33.3 mm (1.3 in) |
| 1926 | 77.7 mm (3.1 in) |
| 1927 | 30.7 mm (1.2 in) |
| 1928 | 26.7 mm (1.1 in) |
| 1929 | 62.2 mm (2.4 in) |
| 1930 | 31.8 mm (1.3 in) |
| 1931 | 27.9 mm (1.1 in) |
| 1932 | 27.7 mm (1.1 in) |
| 1933 | 40.9 mm (1.6 in) |
| 1934 | 34.5 mm (1.4 in) |
| 1935 | 31.2 mm (1.2 in) |
| 1936 | 37.6 mm (1.5 in) |
| 1937 | 16.3 mm (0.6 in) |
| 1938 | 26.2 mm (1.0 in) |
| 1939 | 11.7 mm (0.5 in) |
| 1940 | 33.5 mm (1.3 in) |
| 1941 | 47.2 mm (1.9 in) |
| 1942 | 50.8 mm (2.0 in) |
| 1943 | 29.0 mm (1.1 in) |
| 1944 | 43.2 mm (1.7 in) |
| 1945 | 18.8 mm (0.7 in) |
| 1946 | 37.8 mm (1.5 in) |
| 1947 | 39.1 mm (1.5 in) |
| 1948 | 23.4 mm (0.9 in) |
| 1949 | 37.6 mm (1.5 in) |
| 1950 | 21.8 mm (0.9 in) |
| 1951 | 30.7 mm (1.2 in) |
| 1952 | 19.3 mm (0.8 in) |
| 1953 | 40.1 mm (1.6 in) |
| 1954 | 28.4 mm (1.1 in) |
| 1955 | 61.0 mm (2.4 in) |
| 1956 | 19.3 mm (0.8 in) |
| 1957 | 32.0 mm (1.3 in) |
| 1958 | 29.5 mm (1.2 in) |
| 1959 | 25.1 mm (1.0 in) |
| 1960 | 19.3 mm (0.8 in) |
| 1961 | 35.6 mm (1.4 in) |
| 1962 | 25.1 mm (1.0 in) |
| 1963 | 33.0 mm (1.3 in) |
| 1964 | 15.2 mm (0.6 in) |
| 1965 | 34.5 mm (1.4 in) |
| 1966 | 43.2 mm (1.7 in) |
| 1967 | 41.1 mm (1.6 in) |
| 1968 | 38.1 mm (1.5 in) |
| 1969 | 24.6 mm (1.0 in) |
| 1970 | 41.7 mm (1.6 in) |
| 1971 | 20.8 mm (0.8 in) |
| 1972 | 19.8 mm (0.8 in) |
| 1973 | 86.6 mm (3.4 in) |
| 1974 | 57.4 mm (2.3 in) |
| 1975 | 27.4 mm (1.1 in) |
| 1976 | 23.1 mm (0.9 in) |
| 1977 | 40.9 mm (1.6 in) |
| 1978 | 28.2 mm (1.1 in) |
| 1979 | 41.4 mm (1.6 in) |
| 1980 | 30.0 mm (1.2 in) |
| 1981 | 42.9 mm (1.7 in) |
| 1982 | 37.3 mm (1.5 in) |
| 1983 | 30.7 mm (1.2 in) |
| 1984 | 36.6 mm (1.4 in) |
| 1985 | 153.9 mm (6.1 in) |
| 1986 | 35.6 mm (1.4 in) |
| 1987 | 33.0 mm (1.3 in) |
| 1988 | 33.5 mm (1.3 in) |
| 1989 | 23.9 mm (0.9 in) |
| 1990 | 25.9 mm (1.0 in) |
| 1991 | 39.6 mm (1.6 in) |
| 1992 | 23.1 mm (0.9 in) |
| 1993 | 25.7 mm (1.0 in) |
| 1994 | 27.9 mm (1.1 in) |
| 1995 | 36.6 mm (1.4 in) |
| 1996 | 26.9 mm (1.1 in) |
| 1997 | 36.1 mm (1.4 in) |
| 1998 | 15.5 mm (0.6 in) |
| 1999 | 41.1 mm (1.6 in) |
| 2000 | 25.9 mm (1.0 in) |
| 2001 | 39.9 mm (1.6 in) |
| 2002 | 32.8 mm (1.3 in) |
| 2003 | 26.9 mm (1.1 in) |
| 2004 | 20.3 mm (0.8 in) |
| 2005 | 36.8 mm (1.4 in) |
| 2006 | 48.8 mm (1.9 in) |
| 2007 | 26.7 mm (1.1 in) |
| 2008 | 52.6 mm (2.1 in) |
| 2009 | 30.5 mm (1.2 in) |
| 2010 | 38.6 mm (1.5 in) |
| 2011 | 61.7 mm (2.4 in) |
| 2012 | 45.0 mm (1.8 in) |
| 2013 | 34.8 mm (1.4 in) |
| 2014 | 33.8 mm (1.3 in) |
| 2015 | 39.6 mm (1.6 in) |
| 2016 | 36.6 mm (1.4 in) |
| 2017 | 41.9 mm (1.6 in) |
| 2018 | 33.8 mm (1.3 in) |
| 2019 | 41.9 mm (1.6 in) |
| 2020 | 19.8 mm (0.8 in) |
| 2021 | 60.2 mm (2.4 in) |
| 2022 | 10.7 mm (0.4 in) |
| 2023 | 35.1 mm (1.4 in) |
| 2024 | 28.2 mm (1.1 in) |
| 2025 | 25.7 mm (1.0 in) |
| 2026 | 31.0 mm (1.2 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1915 | 63.8 mm (2.5 in) |
| 1916 | 36.6 mm (1.4 in) |
| 1917 | 56.8 mm (2.2 in) |
| 1918 | 51.1 mm (2.0 in) |
| 1919 | 40.9 mm (1.6 in) |
| 1920 | 51.8 mm (2.0 in) |
| 1921 | 48.7 mm (1.9 in) |
| 1922 | 41.5 mm (1.6 in) |
| 1923 | 71.6 mm (2.8 in) |
| 1924 | 66.6 mm (2.6 in) |
| 1925 | 52.1 mm (2.1 in) |
| 1926 | 100.9 mm (4.0 in) |
| 1927 | 49.7 mm (2.0 in) |
| 1928 | 34.1 mm (1.3 in) |
| 1929 | 105.7 mm (4.2 in) |
| 1930 | 82.1 mm (3.2 in) |
| 1931 | 51.8 mm (2.0 in) |
| 1932 | 31.5 mm (1.2 in) |
| 1933 | 78.2 mm (3.1 in) |
| 1934 | 44.4 mm (1.7 in) |
| 1935 | 60.5 mm (2.4 in) |
| 1936 | 49.0 mm (1.9 in) |
| 1937 | 30.5 mm (1.2 in) |
| 1938 | 68.6 mm (2.7 in) |
| 1939 | 17.5 mm (0.7 in) |
| 1940 | 45.8 mm (1.8 in) |
| 1941 | 104.1 mm (4.1 in) |
| 1942 | 86.6 mm (3.4 in) |
| 1943 | 58.2 mm (2.3 in) |
| 1944 | 48.3 mm (1.9 in) |
| 1945 | 52.6 mm (2.1 in) |
| 1946 | 57.7 mm (2.3 in) |
| 1947 | 53.3 mm (2.1 in) |
| 1948 | 36.3 mm (1.4 in) |
| 1949 | 66.3 mm (2.6 in) |
| 1950 | 37.0 mm (1.5 in) |
| 1951 | 59.2 mm (2.3 in) |
| 1952 | 36.3 mm (1.4 in) |
| 1953 | 60.4 mm (2.4 in) |
| 1954 | 34.8 mm (1.4 in) |
| 1955 | 86.9 mm (3.4 in) |
| 1956 | 42.9 mm (1.7 in) |
| 1957 | 51.0 mm (2.0 in) |
| 1958 | 49.6 mm (2.0 in) |
| 1959 | 65.5 mm (2.6 in) |
| 1960 | 29.7 mm (1.2 in) |
| 1961 | 58.7 mm (2.3 in) |
| 1962 | 40.5 mm (1.6 in) |
| 1963 | 45.2 mm (1.8 in) |
| 1964 | 18.5 mm (0.7 in) |
| 1965 | 55.6 mm (2.2 in) |
| 1966 | 70.1 mm (2.8 in) |
| 1967 | 46.0 mm (1.8 in) |
| 1968 | 67.8 mm (2.7 in) |
| 1969 | 49.5 mm (1.9 in) |
| 1970 | 57.7 mm (2.3 in) |
| 1971 | 39.4 mm (1.6 in) |
| 1972 | 27.2 mm (1.1 in) |
| 1973 | 98.5 mm (3.9 in) |
| 1974 | 64.3 mm (2.5 in) |
| 1975 | 50.9 mm (2.0 in) |
| 1976 | 37.5 mm (1.5 in) |
| 1977 | 56.2 mm (2.2 in) |
| 1978 | 53.9 mm (2.1 in) |
| 1979 | 56.4 mm (2.2 in) |
| 1980 | 47.2 mm (1.9 in) |
| 1981 | 66.5 mm (2.6 in) |
| 1982 | 51.6 mm (2.0 in) |
| 1983 | 42.4 mm (1.7 in) |
| 1984 | 57.2 mm (2.3 in) |
| 1985 | 167.4 mm (6.6 in) |
| 1986 | 35.9 mm (1.4 in) |
| 1987 | 64.5 mm (2.5 in) |
| 1988 | 67.8 mm (2.7 in) |
| 1989 | 40.2 mm (1.6 in) |
| 1990 | 69.9 mm (2.8 in) |
| 1991 | 77.9 mm (3.1 in) |
| 1992 | 36.8 mm (1.4 in) |
| 1993 | 41.9 mm (1.6 in) |
| 1994 | 40.1 mm (1.6 in) |
| 1995 | 54.1 mm (2.1 in) |
| 1996 | 42.9 mm (1.7 in) |
| 1997 | 63.5 mm (2.5 in) |
| 1998 | 22.9 mm (0.9 in) |
| 1999 | 87.1 mm (3.4 in) |
| 2000 | 45.8 mm (1.8 in) |
| 2001 | 60.2 mm (2.4 in) |
| 2002 | 43.8 mm (1.7 in) |
| 2003 | 43.4 mm (1.7 in) |
| 2004 | 45.4 mm (1.8 in) |
| 2005 | 68.1 mm (2.7 in) |
| 2006 | 62.3 mm (2.5 in) |
| 2007 | 65.6 mm (2.6 in) |
| 2008 | 82.3 mm (3.2 in) |
| 2009 | 54.7 mm (2.2 in) |
| 2010 | 71.7 mm (2.8 in) |
| 2011 | 78.0 mm (3.1 in) |
| 2012 | 57.0 mm (2.2 in) |
| 2013 | 125.3 mm (4.9 in) |
| 2014 | 51.0 mm (2.0 in) |
| 2015 | 91.7 mm (3.6 in) |
| 2016 | 41.4 mm (1.6 in) |
| 2017 | 64.2 mm (2.5 in) |
| 2018 | 50.5 mm (2.0 in) |
| 2019 | 74.4 mm (2.9 in) |
| 2020 | 27.9 mm (1.1 in) |
| 2021 | 83.8 mm (3.3 in) |
| 2022 | 21.5 mm (0.8 in) |
| 2023 | 70.7 mm (2.8 in) |
| 2024 | 47.0 mm (1.9 in) |
| 2025 | 49.4 mm (1.9 in) |
| 2026 | 43.5 mm (1.7 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1915 | 42 days |
| 1916 | 26 days |
| 1917 | 28 days |
| 1918 | 25 days |
| 1919 | 31 days |
| 1920 | 28 days |
| 1921 | 61 days |
| 1922 | 30 days |
| 1923 | 27 days |
| 1924 | 24 days |
| 1925 | 31 days |
| 1926 | 19 days |
| 1927 | 23 days |
| 1928 | 39 days |
| 1929 | 17 days |
| 1930 | 34 days |
| 1931 | 40 days |
| 1932 | 25 days |
| 1933 | 38 days |
| 1934 | 61 days |
| 1935 | 48 days |
| 1936 | 27 days |
| 1937 | 26 days |
| 1938 | 22 days |
| 1939 | 43 days |
| 1940 | 21 days |
| 1941 | 21 days |
| 1942 | 23 days |
| 1943 | 35 days |
| 1944 | 65 days |
| 1945 | 26 days |
| 1946 | 47 days |
| 1947 | 22 days |
| 1948 | 43 days |
| 1949 | 41 days |
| 1950 | 31 days |
| 1951 | 21 days |
| 1952 | 32 days |
| 1953 | 31 days |
| 1954 | 34 days |
| 1955 | 29 days |
| 1956 | 43 days |
| 1957 | 25 days |
| 1958 | 33 days |
| 1959 | 34 days |
| 1960 | 19 days |
| 1961 | 40 days |
| 1962 | 40 days |
| 1963 | 50 days |
| 1964 | 59 days |
| 1965 | 55 days |
| 1966 | 41 days |
| 1967 | 26 days |
| 1968 | 42 days |
| 1969 | 38 days |
| 1970 | 33 days |
| 1971 | 37 days |
| 1972 | 67 days |
| 1973 | 31 days |
| 1974 | 50 days |
| 1975 | 34 days |
| 1976 | 32 days |
| 1977 | 28 days |
| 1978 | 33 days |
| 1979 | 29 days |
| 1980 | 32 days |
| 1981 | 24 days |
| 1982 | 45 days |
| 1983 | 62 days |
| 1984 | 34 days |
| 1985 | 31 days |
| 1986 | 29 days |
| 1987 | 22 days |
| 1988 | 33 days |
| 1989 | 28 days |
| 1990 | 20 days |
| 1991 | 31 days |
| 1992 | 35 days |
| 1993 | 24 days |
| 1994 | 23 days |
| 1995 | 47 days |
| 1996 | 36 days |
| 1997 | 34 days |
| 1998 | 41 days |
| 1999 | 35 days |
| 2000 | 23 days |
| 2001 | 41 days |
| 2002 | 28 days |
| 2003 | 25 days |
| 2004 | 31 days |
| 2005 | 26 days |
| 2006 | 45 days |
| 2007 | 30 days |
| 2008 | 44 days |
| 2009 | 17 days |
| 2010 | 52 days |
| 2011 | 24 days |
| 2012 | 52 days |
| 2013 | 30 days |
| 2014 | 25 days |
| 2015 | 34 days |
| 2016 | 33 days |
| 2017 | 30 days |
| 2018 | 31 days |
| 2019 | 15 days |
| 2020 | 42 days |
| 2021 | 37 days |
| 2022 | 30 days |
| 2023 | 25 days |
| 2024 | 54 days |
| 2025 | 45 days |
| 2026 | 43 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
111 years with a frostAcross 111 years with a frost, the median last spring frost at Cheyenne falls on 14 May and the median first autumn frost on 28 September, which leaves a median of 136 days between them.
In 1996 to 2025 the median growing season was 142 days. That is 13 days more than in 1915 to 1944.
Fitted over all years, the growing season changes by +1.9 days per decade at this station.
| Measure | Median, all years | Earliest period (1915 to 1944) | Recent period (1996 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 14 May | 16 May | 13 May | 3 days earlier | -1.2 days per decade |
| First autumn frost | 28 September | 26 September | 5 October | 9 days later | +0.8 days per decade |
| Growing days | 136 days | 129 days | 142 days | 13 days more | +1.9 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
111 years, 1915 to 2025A day with at least 31.7 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 87.7 mm (3.5 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 31.7 mm (1.2 in) | |
| 5 years | 43.9 mm (1.7 in) | |
| 10 years | 53.0 mm (2.1 in) | |
| 25 years | 65.8 mm (2.6 in) | |
| 50 years | 76.3 mm (3.0 in) | |
| 100 years | 87.7 mm (3.5 in) |
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 111 years of values from 1915 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: 153.9 mm (6.1 in) in 1985; 86.6 mm (3.4 in) in 1973; 77.7 mm (3.1 in) in 1926.
Station Changes
2 suspected2 changes were suspected in the annual mean temperature of Cheyenne, at 1961 and 1966. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1961 ran 0.3 C (0.5 F) lower than in the years before (possible change).
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1966 ran 0.6 C (1.1 F) higher than in the years before (possible change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1961 | -0.3 | -0.5 | possible | 5 |
| 1966 | +0.6 | +1.1 | possible | 5 |
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Climate Twins
2011 to 2025 against 1961 to 1990Over 2011 to 2025, Cheyenne had a mean temperature of 8.7 C (47.6 F) and 383.9 mm (15.1 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Lehman Caves Nm (United States, 835 km away), Rush 1N (United States, 262 km away) and Castle Rock (United States, 196 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Lehman Caves Nm | United States | 835 km (519 mi) | 8.9 C (47.9 F) | 335.4 mm (13.2 in) | 1.03 |
| Rush 1N | United States | 262 km (163 mi) | 8.5 C (47.3 F) | 349.4 mm (13.8 in) | 1.05 |
| Castle Rock | United States | 196 km (122 mi) | 8.7 C (47.6 F) | 444.6 mm (17.5 in) | 1.05 |
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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-15).