Mandan Exp STN Weather Records (USC00325479)
Record envelope, standing records and threshold days for Mandan Exp STN (USC00325479), North Dakota, United States, with 114 years of record.
Key Facts for Mandan Exp STN
- Mandan Exp STN (USC00325479) is a weather station in North Dakota, United States at 46.81 latitude and -100.91 longitude, 533 m (1,750 ft) above sea level.
- The station reports from 1913 to 2026, 114 years of record.
- 1,464 records set at Mandan Exp STN still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Mandan Exp STN tied a daily record high maximum temperature of 39.4 C (102.9 F) on 13 July 2026.
About the Station
- Location: North Dakota, United States, 46.81 latitude, -100.91 longitude.
- Elevation: 533 m (1,750 ft).
- Period of record: 1913 to 2026, 114 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
4 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 17.2 C (63.0 F) | -41.7 C (-43.1 F) | 8.9 C (48.0 F) | -31.1 C (-24.0 F) |
| Feb | 20.0 C (68.0 F) | -43.3 C (-45.9 F) | 13.9 C (57.0 F) | -21.1 C (-6.0 F) |
| Mar | 27.8 C (82.0 F) | -34.4 C (-29.9 F) | n/a | n/a |
| Apr | 34.4 C (93.9 F) | -22.2 C (-8.0 F) | 30.6 C (87.1 F) | -8.9 C (16.0 F) |
| May | 38.9 C (102.0 F) | -10.6 C (12.9 F) | 32.8 C (91.0 F) | -5.0 C (23.0 F) |
| Jun | 43.3 C (109.9 F) | -2.2 C (28.0 F) | 32.8 C (91.0 F) | 5.0 C (41.0 F) |
| Jul | 46.1 C (115.0 F) | 2.2 C (36.0 F) | 39.4 C (102.9 F) | 10.6 C (51.1 F) |
| Aug | 42.8 C (109.0 F) | 0.0 C (32.0 F) | 38.3 C (100.9 F) | 7.2 C (45.0 F) |
| Sep | 40.0 C (104.0 F) | -10.0 C (14.0 F) | n/a | n/a |
| Oct | 35.6 C (96.1 F) | -25.6 C (-14.1 F) | n/a | n/a |
| Nov | 26.7 C (80.1 F) | -32.2 C (-26.0 F) | n/a | n/a |
| Dec | 18.9 C (66.0 F) | -43.3 C (-45.9 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1913 | 4 |
| 1914 | 4 |
| 1915 | 22 |
| 1916 | 22 |
| 1917 | 31 |
| 1918 | 19 |
| 1919 | 27 |
| 1920 | 9 |
| 1921 | 23 |
| 1922 | 13 |
| 1923 | 10 |
| 1924 | 9 |
| 1925 | 13 |
| 1926 | 12 |
| 1927 | 19 |
| 1928 | 17 |
| 1929 | 18 |
| 1930 | 13 |
| 1931 | 25 |
| 1932 | 9 |
| 1933 | 12 |
| 1934 | 36 |
| 1935 | 18 |
| 1936 | 56 |
| 1937 | 16 |
| 1938 | 7 |
| 1939 | 19 |
| 1940 | 9 |
| 1941 | 12 |
| 1942 | 19 |
| 1943 | 17 |
| 1944 | 7 |
| 1945 | 11 |
| 1946 | 4 |
| 1947 | 12 |
| 1948 | 10 |
| 1949 | 12 |
| 1950 | 27 |
| 1951 | 24 |
| 1952 | 10 |
| 1953 | 13 |
| 1954 | 12 |
| 1955 | 18 |
| 1956 | 10 |
| 1957 | 10 |
| 1958 | 16 |
| 1959 | 14 |
| 1960 | 10 |
| 1961 | 8 |
| 1962 | 14 |
| 1963 | 14 |
| 1964 | 13 |
| 1965 | 18 |
| 1966 | 11 |
| 1967 | 14 |
| 1968 | 20 |
| 1969 | 8 |
| 1970 | 7 |
| 1971 | 8 |
| 1972 | 16 |
| 1973 | 9 |
| 1974 | 9 |
| 1975 | 9 |
| 1976 | 10 |
| 1977 | 17 |
| 1978 | 4 |
| 1979 | 13 |
| 1980 | 14 |
| 1981 | 7 |
| 1982 | 8 |
| 1983 | 11 |
| 1984 | 5 |
| 1985 | 23 |
| 1986 | 10 |
| 1987 | 10 |
| 1988 | 23 |
| 1989 | 16 |
| 1990 | 9 |
| 1991 | 22 |
| 1992 | 19 |
| 1993 | 6 |
| 1994 | 10 |
| 1995 | 6 |
| 1996 | 12 |
| 1997 | 15 |
| 1998 | 5 |
| 1999 | 10 |
| 2000 | 12 |
| 2001 | 8 |
| 2002 | 16 |
| 2003 | 13 |
| 2004 | 10 |
| 2005 | 10 |
| 2006 | 5 |
| 2007 | 9 |
| 2008 | 1 |
| 2009 | 11 |
| 2010 | 5 |
| 2011 | 7 |
| 2012 | 24 |
| 2013 | 6 |
| 2014 | 12 |
| 2015 | 17 |
| 2016 | 8 |
| 2017 | 5 |
| 2018 | 4 |
| 2019 | 6 |
| 2020 | 9 |
| 2021 | 6 |
| 2022 | 3 |
| 2023 | 6 |
| 2024 | 9 |
| 2025 | 13 |
| 2026 | 6 |
All-Time Record Progression
11 new records| Date | Kind | Detail |
|---|---|---|
| 1960-06-20 | Record daily precipitation | Record daily precipitation 100.6 mm (4.0 in) |
| 1969-02-27 | Record snow depth | Record snow depth 63.5 cm (25.0 in) |
| 1982-03-20 | Record daily snowfall | Record daily snowfall 32.8 cm (12.9 in) |
| 1986-11-09 | Record daily snowfall | Record daily snowfall 43.2 cm (17.0 in) |
| 1993-07-16 | Record daily precipitation | Record daily precipitation 108.0 mm (4.3 in) |
| 1993-11-26 | Record snow depth | Record snow depth 66.0 cm (26.0 in) |
| 1993-11-27 | Record snow depth | Record snow depth 73.7 cm (29.0 in) |
| 1996-02-02 | Record low maximum temperature | Record low maximum temperature -33.3 C (-27.9 F) |
| 2001-07-27 | Record daily precipitation | Record daily precipitation 112.8 mm (4.4 in) |
| 2013-04-16 | Record daily snowfall | Record daily snowfall 44.2 cm (17.4 in) |
| 2022-11-15 | Record daily snowfall | Record daily snowfall 61.0 cm (24.0 in) |
Wettest Day of Each Month
Jul: 112.8 mm (4.4 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 17.0 mm (0.7 in) | 16 January 1933 |
| Feb | 29.2 mm (1.1 in) | 26 February 2000 |
| Mar | 26.7 mm (1.1 in) | 24 March 1950 |
| Apr | 49.8 mm (2.0 in) | 29 April 1940 |
| May | 72.6 mm (2.9 in) | 12 May 1985 |
| Jun | 111.8 mm (4.4 in) | 16 June 2009 |
| Jul | 112.8 mm (4.4 in) | 27 July 2001 |
| Aug | 73.7 mm (2.9 in) | 1 August 1915 |
| Sep | 76.2 mm (3.0 in) | 18 September 1977 |
| Oct | 50.8 mm (2.0 in) | 5 October 1998 |
| Nov | 36.8 mm (1.4 in) | 6 November 2008 |
| Dec | 27.4 mm (1.1 in) | 28 December 2016 |
Period of Record Coverage
1913 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1913 | 162 | 44% | No |
| 1914 | 237 | 65% | No |
| 1915 | 303 | 83% | No |
| 1916 | 364 | 99% | Yes |
| 1917 | 362 | 99% | Yes |
| 1918 | 355 | 97% | Yes |
| 1919 | 338 | 93% | Yes |
| 1920 | 336 | 92% | Yes |
| 1921 | 324 | 89% | No |
| 1922 | 327 | 90% | No |
| 1923 | 320 | 88% | No |
| 1924 | 333 | 91% | Yes |
| 1925 | 328 | 90% | No |
| 1926 | 316 | 87% | No |
| 1927 | 320 | 88% | No |
| 1928 | 335 | 92% | Yes |
| 1929 | 330 | 90% | Yes |
| 1930 | 337 | 92% | Yes |
| 1931 | 331 | 91% | Yes |
| 1932 | 333 | 91% | Yes |
| 1933 | 328 | 90% | No |
| 1934 | 337 | 92% | Yes |
| 1935 | 353 | 97% | Yes |
| 1936 | 339 | 93% | Yes |
| 1937 | 360 | 99% | Yes |
| 1938 | 355 | 97% | Yes |
| 1939 | 358 | 98% | Yes |
| 1940 | 365 | 100% | Yes |
| 1941 | 354 | 97% | Yes |
| 1942 | 348 | 95% | Yes |
| 1943 | 337 | 92% | Yes |
| 1944 | 335 | 92% | Yes |
| 1945 | 335 | 92% | Yes |
| 1946 | 333 | 91% | Yes |
| 1947 | 328 | 90% | No |
| 1948 | 347 | 95% | Yes |
| 1949 | 364 | 100% | Yes |
| 1950 | 365 | 100% | Yes |
| 1951 | 365 | 100% | Yes |
| 1952 | 365 | 100% | Yes |
| 1953 | 364 | 100% | Yes |
| 1954 | 363 | 99% | Yes |
| 1955 | 365 | 100% | Yes |
| 1956 | 366 | 100% | Yes |
| 1957 | 364 | 100% | Yes |
| 1958 | 362 | 99% | Yes |
| 1959 | 364 | 100% | Yes |
| 1960 | 366 | 100% | Yes |
| 1961 | 364 | 100% | Yes |
| 1962 | 365 | 100% | Yes |
| 1963 | 365 | 100% | Yes |
| 1964 | 365 | 100% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 361 | 99% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 365 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 365 | 100% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 356 | 98% | Yes |
| 1975 | 365 | 100% | Yes |
| 1976 | 365 | 100% | Yes |
| 1977 | 364 | 100% | Yes |
| 1978 | 364 | 100% | Yes |
| 1979 | 361 | 99% | Yes |
| 1980 | 364 | 99% | Yes |
| 1981 | 364 | 100% | Yes |
| 1982 | 361 | 99% | Yes |
| 1983 | 363 | 99% | Yes |
| 1984 | 362 | 99% | Yes |
| 1985 | 365 | 100% | Yes |
| 1986 | 363 | 99% | Yes |
| 1987 | 364 | 100% | Yes |
| 1988 | 365 | 100% | Yes |
| 1989 | 365 | 100% | Yes |
| 1990 | 364 | 100% | Yes |
| 1991 | 363 | 99% | Yes |
| 1992 | 364 | 99% | Yes |
| 1993 | 363 | 99% | Yes |
| 1994 | 364 | 100% | Yes |
| 1995 | 363 | 99% | Yes |
| 1996 | 364 | 99% | 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 | 365 | 100% | Yes |
| 2005 | 365 | 100% | Yes |
| 2006 | 365 | 100% | Yes |
| 2007 | 364 | 100% | Yes |
| 2008 | 363 | 99% | Yes |
| 2009 | 357 | 98% | Yes |
| 2010 | 324 | 89% | No |
| 2011 | 365 | 100% | Yes |
| 2012 | 359 | 98% | Yes |
| 2013 | 361 | 99% | Yes |
| 2014 | 348 | 95% | Yes |
| 2015 | 365 | 100% | Yes |
| 2016 | 361 | 99% | Yes |
| 2017 | 335 | 92% | Yes |
| 2018 | 331 | 91% | Yes |
| 2019 | 364 | 100% | Yes |
| 2020 | 244 | 67% | No |
| 2021 | 335 | 92% | Yes |
| 2022 | 273 | 75% | No |
| 2023 | 334 | 92% | Yes |
| 2024 | 366 | 100% | Yes |
| 2025 | 335 | 92% | Yes |
| 2026 | 189 | 52% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 13 July 2026 | Mandan Exp STN, US | daily high max (Tie) | 39.4 C (102.9 F) | tie | 20 years | 4 of 100 (Routine) |
| 18 May 2026 | Mandan Exp STN, US | daily low max (Tie) | 6.1 C (43.0 F) | tie | 7 years | 3 of 100 (Routine) |
| 6 April 2026 | Mandan Exp STN, US | daily snowfall | 20.3 cm (8.0 in) | 2.3 cm (0.9 in) | 84 years | 38 of 100 (Notable) |
| 18 February 2026 | Mandan Exp STN, US | daily rain | 10.4 mm (0.4 in) | 3.0 mm (0.12 in) | 34 years | 20 of 100 (Routine) |
| 16 February 2026 | Mandan Exp STN, US | daily high max | 12.2 C (54.0 F) | 1.1 C (2.0 F) | 44 years | 24 of 100 (Routine) |
| 15 February 2026 | Mandan Exp STN, US | daily high min | 1.1 C (34.0 F) | 1.1 C (2.0 F) | 44 years | 24 of 100 (Routine) |
| 13 February 2026 | Mandan Exp STN, US | daily high max | 12.8 C (55.0 F) | 1.1 C (2.0 F) | 92 years | 38 of 100 (Notable) |
| 10 February 2026 | Mandan Exp STN, US | daily high min (Tie) | -0.6 C (30.9 F) | tie | 16 years | 3 of 100 (Routine) |
| 6 February 2026 | Mandan Exp STN, US | daily high min | -0.6 C (30.9 F) | 0.5 C (0.9 F) | 63 years | 28 of 100 (Routine) |
| 5 February 2026 | Mandan Exp STN, US | daily high min | 0.6 C (33.1 F) | 2.3 C (4.1 F) | 72 years | 33 of 100 (Routine) |
| 5 February 2026 | Mandan Exp STN, US | daily high max | 13.9 C (57.0 F) | 2.2 C (4.0 F) | 35 years | 22 of 100 (Routine) |
| 3 February 2026 | Mandan Exp STN, US | daily high min (Tie) | 0.6 C (33.1 F) | tie | 2 years | 2 of 100 (Routine) |
| 8 December 2025 | Mandan Exp STN, US | daily snowfall | 7.6 cm (3.0 in) | 2.5 cm (1.0 in) | 80 years | 41 of 100 (Notable) |
| 23 November 2025 | Mandan Exp STN, US | daily high max (Tie) | 15.6 C (60.1 F) | tie | 56 years | 6 of 100 (Routine) |
| 19 November 2025 | Mandan Exp STN, US | daily high min | 2.8 C (37.0 F) | 1.7 C (3.1 F) | 76 years | 34 of 100 (Routine) |
| 14 November 2025 | Mandan Exp STN, US | daily high max | 22.2 C (72.0 F) | 1.6 C (2.9 F) | 86 years | 37 of 100 (Notable) |
| 26 October 2025 | Mandan Exp STN, US | daily high min | 10.6 C (51.1 F) | 1.2 C (2.2 F) | 24 years | 19 of 100 (Routine) |
| 20 August 2025 | Mandan Exp STN, US | daily high min (Tie) | 20.0 C (68.0 F) | tie | 52 years | 6 of 100 (Routine) |
| 20 July 2025 | Mandan Exp STN, US | daily low max (Tie) | 17.8 C (64.0 F) | tie | 44 years | 5 of 100 (Routine) |
| 17 July 2025 | Mandan Exp STN, US | daily low min | 3.9 C (39.0 F) | 2.8 C (5.0 F) | 2 years | 18 of 100 (Routine) |
Climate Trend
101 complete years, 1916 to 2024| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1916 | 3.3 C | -2.20 C |
| 1917 | 3.4 C | -2.09 C |
| 1918 | 5.3 C | -0.22 C |
| 1919 | 4.9 C | -0.60 C |
| 1920 | 5.9 C | +0.44 C |
| 1921 | 7.1 C | +1.64 C |
| 1922 | 5.5 C | +0.04 C |
| 1923 | 6.1 C | +0.67 C |
| 1924 | 4.7 C | -0.76 C |
| 1925 | 5.9 C | +0.39 C |
| 1926 | 6.1 C | +0.63 C |
| 1927 | 4.3 C | -1.15 C |
| 1928 | 5.9 C | +0.47 C |
| 1929 | 4.2 C | -1.26 C |
| 1930 | 5.8 C | +0.37 C |
| 1931 | 8.0 C | +2.51 C |
| 1932 | 5.3 C | -0.20 C |
| 1933 | 6.4 C | +0.88 C |
| 1934 | 7.6 C | +2.12 C |
| 1935 | 5.3 C | -0.17 C |
| 1936 | 4.9 C | -0.58 C |
| 1937 | 4.7 C | -0.81 C |
| 1938 | 6.5 C | +0.98 C |
| 1939 | 6.3 C | +0.84 C |
| 1940 | 5.7 C | +0.26 C |
| 1941 | 6.7 C | +1.24 C |
| 1942 | 5.7 C | +0.21 C |
| 1943 | 5.2 C | -0.23 C |
| 1944 | 5.6 C | +0.15 C |
| 1945 | 4.9 C | -0.56 C |
| 1946 | 6.3 C | +0.79 C |
| 1947 | 5.6 C | +0.17 C |
| 1948 | 5.4 C | -0.07 C |
| 1949 | 4.9 C | -0.60 C |
| 1950 | 2.3 C | -3.13 C |
| 1951 | 2.7 C | -2.78 C |
| 1952 | 5.5 C | +0.05 C |
| 1953 | 6.5 C | +1.07 C |
| 1954 | 6.0 C | +0.55 C |
| 1955 | 4.7 C | -0.76 C |
| 1956 | 4.9 C | -0.53 C |
| 1957 | 5.4 C | -0.08 C |
| 1958 | 5.6 C | +0.15 C |
| 1959 | 5.1 C | -0.41 C |
| 1960 | 5.0 C | -0.49 C |
| 1961 | 6.0 C | +0.49 C |
| 1962 | 5.3 C | -0.21 C |
| 1963 | 6.3 C | +0.78 C |
| 1964 | 5.1 C | -0.40 C |
| 1965 | 3.9 C | -1.58 C |
| 1966 | 4.3 C | -1.21 C |
| 1967 | 4.9 C | -0.55 C |
| 1968 | 4.7 C | -0.81 C |
| 1969 | 4.3 C | -1.17 C |
| 1970 | 4.1 C | -1.34 C |
| 1971 | 4.5 C | -0.98 C |
| 1972 | 3.7 C | -1.80 C |
| 1973 | 6.0 C | +0.50 C |
| 1974 | 5.3 C | -0.14 C |
| 1975 | 4.7 C | -0.80 C |
| 1976 | 5.9 C | +0.43 C |
| 1977 | 5.7 C | +0.25 C |
| 1978 | 3.9 C | -1.56 C |
| 1979 | 3.5 C | -1.93 C |
| 1980 | 5.8 C | +0.33 C |
| 1981 | 7.0 C | +1.48 C |
| 1982 | 3.8 C | -1.72 C |
| 1983 | 5.5 C | +0.03 C |
| 1984 | 5.7 C | +0.22 C |
| 1985 | 4.2 C | -1.30 C |
| 1986 | 6.2 C | +0.69 C |
| 1987 | 7.7 C | +2.21 C |
| 1988 | 6.4 C | +0.94 C |
| 1989 | 5.0 C | -0.43 C |
| 1990 | 6.8 C | +1.34 C |
| 1991 | 6.8 C | +1.33 C |
| 1992 | 6.1 C | +0.63 C |
| 1993 | 4.5 C | -0.97 C |
| 1994 | 5.3 C | -0.21 C |
| 1995 | 5.1 C | -0.42 C |
| 1996 | 3.5 C | -1.95 C |
| 1997 | 6.1 C | +0.58 C |
| 1998 | 7.1 C | +1.65 C |
| 1999 | 6.8 C | +1.37 C |
| 2000 | 5.9 C | +0.42 C |
| 2001 | 6.6 C | +1.08 C |
| 2002 | 6.1 C | +0.58 C |
| 2003 | 5.9 C | +0.38 C |
| 2004 | 5.8 C | +0.34 C |
| 2005 | 6.7 C | +1.24 C |
| 2006 | 7.7 C | +2.18 C |
| 2007 | 6.2 C | +0.73 C |
| 2008 | 5.0 C | -0.45 C |
| 2009 | 4.4 C | -1.12 C |
| 2011 | 5.3 C | -0.16 C |
| 2012 | 7.4 C | +1.92 C |
| 2013 | 4.7 C | -0.80 C |
| 2015 | 7.0 C | +1.50 C |
| 2016 | 7.4 C | +1.95 C |
| 2019 | 3.7 C | -1.79 C |
| 2024 | 6.8 C | +1.31 C |
The fitted trend in annual mean temperature here over 1916 to 2024 is 0.06 C (-0.02 to 0.13) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.11 F (-0.03 to 0.24) per decade. The slope is a straight line fitted to 101 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 (-0.02 to 0.13) per decade | 0.11 F (-0.03 to 0.24) per decade | 1916 to 2024 | 101 | Not clearly different from zero |
| Mean daily maximum | 0.00 C (-0.09 to 0.09) per decade | -0.01 F (-0.16 to 0.15) per decade | 1916 to 2024 | 101 | Not clearly different from zero |
| Mean daily minimum | 0.1 C (0.1 to 0.2) per decade | 0.2 F (0.1 to 0.3) per decade | 1916 to 2024 | 101 | 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
1913 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 46.1 C (115.0 F) | 1936 | 38.3 C (100.9 F) | 114 |
| Coldest night (TNn) | -43.3 C (-45.9 F) | 1916 | -33.3 C (-27.9 F) | 114 |
| Wettest day (Rx1day) | 112.8 mm (4.4 in) | 2001 | 42.8 mm (1.7 in) | 114 |
| Wettest five days (Rx5day) | 162.6 mm (6.4 in) | 1993 | 62.6 mm (2.5 in) | 114 |
| Longest dry spell (CDD) | 93 days | 1987 | 36 days | 114 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1913 | 39.4 C (102.9 F) |
| 1914 | 37.2 C (99.0 F) |
| 1915 | 34.4 C (93.9 F) |
| 1916 | 36.7 C (98.1 F) |
| 1917 | 41.7 C (107.1 F) |
| 1918 | 37.8 C (100.0 F) |
| 1919 | 39.4 C (102.9 F) |
| 1920 | 39.4 C (102.9 F) |
| 1921 | 43.3 C (109.9 F) |
| 1922 | 38.3 C (100.9 F) |
| 1923 | 36.1 C (97.0 F) |
| 1924 | 35.6 C (96.1 F) |
| 1925 | 38.3 C (100.9 F) |
| 1926 | 38.3 C (100.9 F) |
| 1927 | 33.9 C (93.0 F) |
| 1928 | 37.8 C (100.0 F) |
| 1929 | 42.2 C (108.0 F) |
| 1930 | 38.9 C (102.0 F) |
| 1931 | 42.2 C (108.0 F) |
| 1932 | 37.2 C (99.0 F) |
| 1933 | 41.1 C (106.0 F) |
| 1934 | 41.7 C (107.1 F) |
| 1935 | 40.0 C (104.0 F) |
| 1936 | 46.1 C (115.0 F) |
| 1937 | 40.0 C (104.0 F) |
| 1938 | 37.8 C (100.0 F) |
| 1939 | 39.4 C (102.9 F) |
| 1940 | 37.8 C (100.0 F) |
| 1941 | 42.8 C (109.0 F) |
| 1942 | 37.8 C (100.0 F) |
| 1943 | 35.0 C (95.0 F) |
| 1944 | 36.1 C (97.0 F) |
| 1945 | 38.3 C (100.9 F) |
| 1946 | 40.6 C (105.1 F) |
| 1947 | 40.0 C (104.0 F) |
| 1948 | 40.0 C (104.0 F) |
| 1949 | 40.0 C (104.0 F) |
| 1950 | 34.4 C (93.9 F) |
| 1951 | 36.7 C (98.1 F) |
| 1952 | 38.3 C (100.9 F) |
| 1953 | 36.7 C (98.1 F) |
| 1954 | 36.1 C (97.0 F) |
| 1955 | 37.2 C (99.0 F) |
| 1956 | 34.4 C (93.9 F) |
| 1957 | 38.9 C (102.0 F) |
| 1958 | 40.0 C (104.0 F) |
| 1959 | 40.0 C (104.0 F) |
| 1960 | 41.1 C (106.0 F) |
| 1961 | 40.0 C (104.0 F) |
| 1962 | 36.7 C (98.1 F) |
| 1963 | 38.9 C (102.0 F) |
| 1964 | 38.9 C (102.0 F) |
| 1965 | 35.0 C (95.0 F) |
| 1966 | 36.1 C (97.0 F) |
| 1967 | 38.3 C (100.9 F) |
| 1968 | 36.7 C (98.1 F) |
| 1969 | 37.8 C (100.0 F) |
| 1970 | 40.0 C (104.0 F) |
| 1971 | 38.9 C (102.0 F) |
| 1972 | 37.2 C (99.0 F) |
| 1973 | 41.7 C (107.1 F) |
| 1974 | 35.6 C (96.1 F) |
| 1975 | 40.0 C (104.0 F) |
| 1976 | 39.4 C (102.9 F) |
| 1977 | 41.7 C (107.1 F) |
| 1978 | 39.4 C (102.9 F) |
| 1979 | 36.1 C (97.0 F) |
| 1980 | 39.4 C (102.9 F) |
| 1981 | 38.9 C (102.0 F) |
| 1982 | 36.1 C (97.0 F) |
| 1983 | 38.3 C (100.9 F) |
| 1984 | 37.8 C (100.0 F) |
| 1985 | 37.8 C (100.0 F) |
| 1986 | 35.0 C (95.0 F) |
| 1987 | 37.2 C (99.0 F) |
| 1988 | 40.6 C (105.1 F) |
| 1989 | 38.9 C (102.0 F) |
| 1990 | 35.0 C (95.0 F) |
| 1991 | 39.4 C (102.9 F) |
| 1992 | 36.1 C (97.0 F) |
| 1993 | 33.3 C (91.9 F) |
| 1994 | 36.7 C (98.1 F) |
| 1995 | 36.7 C (98.1 F) |
| 1996 | 36.1 C (97.0 F) |
| 1997 | 36.7 C (98.1 F) |
| 1998 | 35.6 C (96.1 F) |
| 1999 | 38.9 C (102.0 F) |
| 2000 | 38.9 C (102.0 F) |
| 2001 | 38.3 C (100.9 F) |
| 2002 | 43.3 C (109.9 F) |
| 2003 | 40.0 C (104.0 F) |
| 2004 | 38.3 C (100.9 F) |
| 2005 | 37.2 C (99.0 F) |
| 2006 | 43.3 C (109.9 F) |
| 2007 | 40.6 C (105.1 F) |
| 2008 | 36.1 C (97.0 F) |
| 2009 | 37.2 C (99.0 F) |
| 2010 | 39.4 C (102.9 F) |
| 2011 | 36.1 C (97.0 F) |
| 2012 | 39.4 C (102.9 F) |
| 2013 | 37.2 C (99.0 F) |
| 2014 | 35.0 C (95.0 F) |
| 2015 | 38.3 C (100.9 F) |
| 2016 | 36.1 C (97.0 F) |
| 2017 | 38.9 C (102.0 F) |
| 2018 | 37.8 C (100.0 F) |
| 2019 | 33.3 C (91.9 F) |
| 2020 | 35.6 C (96.1 F) |
| 2021 | 38.3 C (100.9 F) |
| 2022 | 37.2 C (99.0 F) |
| 2023 | 36.1 C (97.0 F) |
| 2024 | 35.6 C (96.1 F) |
| 2025 | 36.7 C (98.1 F) |
| 2026 | 39.4 C (102.9 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1913 | -18.3 C (-0.9 F) |
| 1914 | -36.1 C (-33.0 F) |
| 1915 | -21.7 C (-7.1 F) |
| 1916 | -43.3 C (-45.9 F) |
| 1917 | -40.0 C (-40.0 F) |
| 1918 | -35.6 C (-32.1 F) |
| 1919 | -37.8 C (-36.0 F) |
| 1920 | -35.6 C (-32.1 F) |
| 1921 | -32.2 C (-26.0 F) |
| 1922 | -36.1 C (-33.0 F) |
| 1923 | -33.9 C (-29.0 F) |
| 1924 | -35.0 C (-31.0 F) |
| 1925 | -35.0 C (-31.0 F) |
| 1926 | -28.3 C (-18.9 F) |
| 1927 | -34.4 C (-29.9 F) |
| 1928 | -37.2 C (-35.0 F) |
| 1929 | -40.6 C (-41.1 F) |
| 1930 | -35.0 C (-31.0 F) |
| 1931 | -23.9 C (-11.0 F) |
| 1932 | -30.6 C (-23.1 F) |
| 1933 | -37.8 C (-36.0 F) |
| 1934 | -31.1 C (-24.0 F) |
| 1935 | -37.2 C (-35.0 F) |
| 1936 | -43.3 C (-45.9 F) |
| 1937 | -35.0 C (-31.0 F) |
| 1938 | -32.8 C (-27.0 F) |
| 1939 | -36.7 C (-34.1 F) |
| 1940 | -30.6 C (-23.1 F) |
| 1941 | -29.4 C (-20.9 F) |
| 1942 | -32.8 C (-27.0 F) |
| 1943 | -37.8 C (-36.0 F) |
| 1944 | -35.6 C (-32.1 F) |
| 1945 | -30.0 C (-22.0 F) |
| 1946 | -31.7 C (-25.1 F) |
| 1947 | -33.3 C (-27.9 F) |
| 1948 | -32.2 C (-26.0 F) |
| 1949 | -36.1 C (-33.0 F) |
| 1950 | -38.3 C (-36.9 F) |
| 1951 | -36.1 C (-33.0 F) |
| 1952 | -30.6 C (-23.1 F) |
| 1953 | -27.8 C (-18.0 F) |
| 1954 | -36.7 C (-34.1 F) |
| 1955 | -34.4 C (-29.9 F) |
| 1956 | -33.3 C (-27.9 F) |
| 1957 | -35.6 C (-32.1 F) |
| 1958 | -34.4 C (-29.9 F) |
| 1959 | -37.8 C (-36.0 F) |
| 1960 | -30.6 C (-23.1 F) |
| 1961 | -32.2 C (-26.0 F) |
| 1962 | -36.1 C (-33.0 F) |
| 1963 | -33.9 C (-29.0 F) |
| 1964 | -36.1 C (-33.0 F) |
| 1965 | -34.4 C (-29.9 F) |
| 1966 | -36.7 C (-34.1 F) |
| 1967 | -37.8 C (-36.0 F) |
| 1968 | -36.1 C (-33.0 F) |
| 1969 | -31.1 C (-24.0 F) |
| 1970 | -37.8 C (-36.0 F) |
| 1971 | -34.4 C (-29.9 F) |
| 1972 | -35.6 C (-32.1 F) |
| 1973 | -33.3 C (-27.9 F) |
| 1974 | -35.6 C (-32.1 F) |
| 1975 | -30.6 C (-23.1 F) |
| 1976 | -33.3 C (-27.9 F) |
| 1977 | -35.6 C (-32.1 F) |
| 1978 | -32.8 C (-27.0 F) |
| 1979 | -33.3 C (-27.9 F) |
| 1980 | -32.8 C (-27.0 F) |
| 1981 | -30.0 C (-22.0 F) |
| 1982 | -33.3 C (-27.9 F) |
| 1983 | -38.9 C (-38.0 F) |
| 1984 | -33.3 C (-27.9 F) |
| 1985 | -33.9 C (-29.0 F) |
| 1986 | -31.1 C (-24.0 F) |
| 1987 | -22.2 C (-8.0 F) |
| 1988 | -35.6 C (-32.1 F) |
| 1989 | -36.1 C (-33.0 F) |
| 1990 | -36.1 C (-33.0 F) |
| 1991 | -27.2 C (-17.0 F) |
| 1992 | -29.4 C (-20.9 F) |
| 1993 | -30.0 C (-22.0 F) |
| 1994 | -38.9 C (-38.0 F) |
| 1995 | -31.1 C (-24.0 F) |
| 1996 | -37.8 C (-36.0 F) |
| 1997 | -31.1 C (-24.0 F) |
| 1998 | -31.7 C (-25.1 F) |
| 1999 | -31.7 C (-25.1 F) |
| 2000 | -30.0 C (-22.0 F) |
| 2001 | -28.3 C (-18.9 F) |
| 2002 | -26.7 C (-16.1 F) |
| 2003 | -29.4 C (-20.9 F) |
| 2004 | -32.8 C (-27.0 F) |
| 2005 | -34.4 C (-29.9 F) |
| 2006 | -28.9 C (-20.0 F) |
| 2007 | -32.8 C (-27.0 F) |
| 2008 | -30.0 C (-22.0 F) |
| 2009 | -39.4 C (-38.9 F) |
| 2010 | -30.0 C (-22.0 F) |
| 2011 | -31.7 C (-25.1 F) |
| 2012 | -25.6 C (-14.1 F) |
| 2013 | -33.9 C (-29.0 F) |
| 2014 | -30.0 C (-22.0 F) |
| 2015 | -27.8 C (-18.0 F) |
| 2016 | -33.3 C (-27.9 F) |
| 2017 | -33.9 C (-29.0 F) |
| 2018 | -33.3 C (-27.9 F) |
| 2019 | -35.0 C (-31.0 F) |
| 2020 | -30.0 C (-22.0 F) |
| 2021 | -35.6 C (-32.1 F) |
| 2022 | -31.1 C (-24.0 F) |
| 2023 | -32.8 C (-27.0 F) |
| 2024 | -34.4 C (-29.9 F) |
| 2025 | -38.9 C (-38.0 F) |
| 2026 | -31.1 C (-24.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1913 | 24.6 mm (1.0 in) |
| 1914 | 98.0 mm (3.9 in) |
| 1915 | 73.7 mm (2.9 in) |
| 1916 | 29.7 mm (1.2 in) |
| 1917 | 22.9 mm (0.9 in) |
| 1918 | 27.9 mm (1.1 in) |
| 1919 | 29.7 mm (1.2 in) |
| 1920 | 27.9 mm (1.1 in) |
| 1921 | 50.3 mm (2.0 in) |
| 1922 | 39.1 mm (1.5 in) |
| 1923 | 33.0 mm (1.3 in) |
| 1924 | 51.6 mm (2.0 in) |
| 1925 | 77.2 mm (3.0 in) |
| 1926 | 24.9 mm (1.0 in) |
| 1927 | 47.8 mm (1.9 in) |
| 1928 | 49.5 mm (1.9 in) |
| 1929 | 24.6 mm (1.0 in) |
| 1930 | 34.5 mm (1.4 in) |
| 1931 | 37.3 mm (1.5 in) |
| 1932 | 43.2 mm (1.7 in) |
| 1933 | 17.0 mm (0.7 in) |
| 1934 | 40.4 mm (1.6 in) |
| 1935 | 35.1 mm (1.4 in) |
| 1936 | 20.6 mm (0.8 in) |
| 1937 | 67.3 mm (2.6 in) |
| 1938 | 29.5 mm (1.2 in) |
| 1939 | 31.2 mm (1.2 in) |
| 1940 | 49.8 mm (2.0 in) |
| 1941 | 36.8 mm (1.4 in) |
| 1942 | 21.8 mm (0.9 in) |
| 1943 | 62.0 mm (2.4 in) |
| 1944 | 71.6 mm (2.8 in) |
| 1945 | 45.2 mm (1.8 in) |
| 1946 | 32.3 mm (1.3 in) |
| 1947 | 56.6 mm (2.2 in) |
| 1948 | 44.7 mm (1.8 in) |
| 1949 | 51.1 mm (2.0 in) |
| 1950 | 38.4 mm (1.5 in) |
| 1951 | 53.3 mm (2.1 in) |
| 1952 | 54.6 mm (2.1 in) |
| 1953 | 59.4 mm (2.3 in) |
| 1954 | 71.9 mm (2.8 in) |
| 1955 | 48.0 mm (1.9 in) |
| 1956 | 49.0 mm (1.9 in) |
| 1957 | 29.5 mm (1.2 in) |
| 1958 | 38.9 mm (1.5 in) |
| 1959 | 38.9 mm (1.5 in) |
| 1960 | 100.6 mm (4.0 in) |
| 1961 | 43.7 mm (1.7 in) |
| 1962 | 28.4 mm (1.1 in) |
| 1963 | 45.2 mm (1.8 in) |
| 1964 | 61.7 mm (2.4 in) |
| 1965 | 59.9 mm (2.4 in) |
| 1966 | 54.4 mm (2.1 in) |
| 1967 | 29.5 mm (1.2 in) |
| 1968 | 37.6 mm (1.5 in) |
| 1969 | 32.3 mm (1.3 in) |
| 1970 | 35.8 mm (1.4 in) |
| 1971 | 49.0 mm (1.9 in) |
| 1972 | 38.1 mm (1.5 in) |
| 1973 | 34.3 mm (1.4 in) |
| 1974 | 44.5 mm (1.8 in) |
| 1975 | 44.2 mm (1.7 in) |
| 1976 | 35.6 mm (1.4 in) |
| 1977 | 76.2 mm (3.0 in) |
| 1978 | 33.0 mm (1.3 in) |
| 1979 | 86.4 mm (3.4 in) |
| 1980 | 33.5 mm (1.3 in) |
| 1981 | 66.0 mm (2.6 in) |
| 1982 | 35.1 mm (1.4 in) |
| 1983 | 24.4 mm (1.0 in) |
| 1984 | 32.0 mm (1.3 in) |
| 1985 | 72.6 mm (2.9 in) |
| 1986 | 50.0 mm (2.0 in) |
| 1987 | 48.3 mm (1.9 in) |
| 1988 | 30.7 mm (1.2 in) |
| 1989 | 19.3 mm (0.8 in) |
| 1990 | 39.4 mm (1.6 in) |
| 1991 | 37.6 mm (1.5 in) |
| 1992 | 45.7 mm (1.8 in) |
| 1993 | 108.0 mm (4.3 in) |
| 1994 | 49.8 mm (2.0 in) |
| 1995 | 48.8 mm (1.9 in) |
| 1996 | 41.4 mm (1.6 in) |
| 1997 | 40.4 mm (1.6 in) |
| 1998 | 50.8 mm (2.0 in) |
| 1999 | 66.0 mm (2.6 in) |
| 2000 | 44.7 mm (1.8 in) |
| 2001 | 112.8 mm (4.4 in) |
| 2002 | 35.8 mm (1.4 in) |
| 2003 | 34.0 mm (1.3 in) |
| 2004 | 44.2 mm (1.7 in) |
| 2005 | 36.3 mm (1.4 in) |
| 2006 | 18.3 mm (0.7 in) |
| 2007 | 66.0 mm (2.6 in) |
| 2008 | 36.8 mm (1.4 in) |
| 2009 | 111.8 mm (4.4 in) |
| 2010 | 71.9 mm (2.8 in) |
| 2011 | 65.8 mm (2.6 in) |
| 2012 | 43.9 mm (1.7 in) |
| 2013 | 48.8 mm (1.9 in) |
| 2014 | 32.3 mm (1.3 in) |
| 2015 | 17.8 mm (0.7 in) |
| 2016 | 27.4 mm (1.1 in) |
| 2017 | 35.1 mm (1.4 in) |
| 2018 | 50.8 mm (2.0 in) |
| 2019 | 38.4 mm (1.5 in) |
| 2020 | 19.1 mm (0.8 in) |
| 2021 | 42.4 mm (1.7 in) |
| 2022 | 49.5 mm (1.9 in) |
| 2023 | 88.9 mm (3.5 in) |
| 2024 | 71.9 mm (2.8 in) |
| 2025 | 57.9 mm (2.3 in) |
| 2026 | 33.8 mm (1.3 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1913 | 31.5 mm (1.2 in) |
| 1914 | 130.2 mm (5.1 in) |
| 1915 | 88.0 mm (3.5 in) |
| 1916 | 34.6 mm (1.4 in) |
| 1917 | 39.2 mm (1.5 in) |
| 1918 | 54.2 mm (2.1 in) |
| 1919 | 60.2 mm (2.4 in) |
| 1920 | 38.1 mm (1.5 in) |
| 1921 | 65.3 mm (2.6 in) |
| 1922 | 55.8 mm (2.2 in) |
| 1923 | 53.8 mm (2.1 in) |
| 1924 | 62.3 mm (2.5 in) |
| 1925 | 101.6 mm (4.0 in) |
| 1926 | 48.5 mm (1.9 in) |
| 1927 | 103.5 mm (4.1 in) |
| 1928 | 76.7 mm (3.0 in) |
| 1929 | 40.9 mm (1.6 in) |
| 1930 | 43.4 mm (1.7 in) |
| 1931 | 39.8 mm (1.6 in) |
| 1932 | 68.6 mm (2.7 in) |
| 1933 | 29.1 mm (1.1 in) |
| 1934 | 40.7 mm (1.6 in) |
| 1935 | 79.6 mm (3.1 in) |
| 1936 | 20.9 mm (0.8 in) |
| 1937 | 107.5 mm (4.2 in) |
| 1938 | 52.5 mm (2.1 in) |
| 1939 | 56.7 mm (2.2 in) |
| 1940 | 77.5 mm (3.1 in) |
| 1941 | 77.7 mm (3.1 in) |
| 1942 | 44.4 mm (1.7 in) |
| 1943 | 111.8 mm (4.4 in) |
| 1944 | 76.7 mm (3.0 in) |
| 1945 | 68.3 mm (2.7 in) |
| 1946 | 69.4 mm (2.7 in) |
| 1947 | 83.5 mm (3.3 in) |
| 1948 | 56.9 mm (2.2 in) |
| 1949 | 60.0 mm (2.4 in) |
| 1950 | 62.8 mm (2.5 in) |
| 1951 | 73.0 mm (2.9 in) |
| 1952 | 78.5 mm (3.1 in) |
| 1953 | 100.6 mm (4.0 in) |
| 1954 | 126.0 mm (5.0 in) |
| 1955 | 78.2 mm (3.1 in) |
| 1956 | 61.4 mm (2.4 in) |
| 1957 | 42.8 mm (1.7 in) |
| 1958 | 67.3 mm (2.6 in) |
| 1959 | 39.4 mm (1.6 in) |
| 1960 | 113.8 mm (4.5 in) |
| 1961 | 46.5 mm (1.8 in) |
| 1962 | 49.8 mm (2.0 in) |
| 1963 | 57.2 mm (2.3 in) |
| 1964 | 84.3 mm (3.3 in) |
| 1965 | 71.1 mm (2.8 in) |
| 1966 | 67.6 mm (2.7 in) |
| 1967 | 59.3 mm (2.3 in) |
| 1968 | 60.4 mm (2.4 in) |
| 1969 | 50.4 mm (2.0 in) |
| 1970 | 45.9 mm (1.8 in) |
| 1971 | 55.4 mm (2.2 in) |
| 1972 | 38.1 mm (1.5 in) |
| 1973 | 46.3 mm (1.8 in) |
| 1974 | 49.6 mm (2.0 in) |
| 1975 | 103.2 mm (4.1 in) |
| 1976 | 73.7 mm (2.9 in) |
| 1977 | 87.6 mm (3.4 in) |
| 1978 | 48.3 mm (1.9 in) |
| 1979 | 99.1 mm (3.9 in) |
| 1980 | 56.9 mm (2.2 in) |
| 1981 | 69.6 mm (2.7 in) |
| 1982 | 95.6 mm (3.8 in) |
| 1983 | 45.7 mm (1.8 in) |
| 1984 | 49.3 mm (1.9 in) |
| 1985 | 85.3 mm (3.4 in) |
| 1986 | 73.4 mm (2.9 in) |
| 1987 | 58.1 mm (2.3 in) |
| 1988 | 51.3 mm (2.0 in) |
| 1989 | 42.2 mm (1.7 in) |
| 1990 | 49.6 mm (2.0 in) |
| 1991 | 51.3 mm (2.0 in) |
| 1992 | 90.2 mm (3.6 in) |
| 1993 | 162.6 mm (6.4 in) |
| 1994 | 68.8 mm (2.7 in) |
| 1995 | 86.3 mm (3.4 in) |
| 1996 | 58.9 mm (2.3 in) |
| 1997 | 75.3 mm (3.0 in) |
| 1998 | 82.3 mm (3.2 in) |
| 1999 | 110.7 mm (4.4 in) |
| 2000 | 97.0 mm (3.8 in) |
| 2001 | 128.1 mm (5.0 in) |
| 2002 | 57.6 mm (2.3 in) |
| 2003 | 59.6 mm (2.3 in) |
| 2004 | 61.0 mm (2.4 in) |
| 2005 | 87.1 mm (3.4 in) |
| 2006 | 25.4 mm (1.0 in) |
| 2007 | 96.5 mm (3.8 in) |
| 2008 | 91.9 mm (3.6 in) |
| 2009 | 135.1 mm (5.3 in) |
| 2010 | 78.0 mm (3.1 in) |
| 2011 | 69.9 mm (2.8 in) |
| 2012 | 45.8 mm (1.8 in) |
| 2013 | 110.5 mm (4.4 in) |
| 2014 | 59.2 mm (2.3 in) |
| 2015 | 20.8 mm (0.8 in) |
| 2016 | 38.8 mm (1.5 in) |
| 2017 | 35.1 mm (1.4 in) |
| 2018 | 64.8 mm (2.6 in) |
| 2019 | 86.6 mm (3.4 in) |
| 2020 | 19.1 mm (0.8 in) |
| 2021 | 83.0 mm (3.3 in) |
| 2022 | 50.8 mm (2.0 in) |
| 2023 | 88.9 mm (3.5 in) |
| 2024 | 102.4 mm (4.0 in) |
| 2025 | 109.2 mm (4.3 in) |
| 2026 | 51.3 mm (2.0 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1913 | 28 days |
| 1914 | 31 days |
| 1915 | 48 days |
| 1916 | 73 days |
| 1917 | 76 days |
| 1918 | 35 days |
| 1919 | 32 days |
| 1920 | 29 days |
| 1921 | 29 days |
| 1922 | 31 days |
| 1923 | 38 days |
| 1924 | 48 days |
| 1925 | 44 days |
| 1926 | 37 days |
| 1927 | 24 days |
| 1928 | 41 days |
| 1929 | 29 days |
| 1930 | 41 days |
| 1931 | 37 days |
| 1932 | 23 days |
| 1933 | 29 days |
| 1934 | 52 days |
| 1935 | 44 days |
| 1936 | 46 days |
| 1937 | 36 days |
| 1938 | 32 days |
| 1939 | 74 days |
| 1940 | 41 days |
| 1941 | 41 days |
| 1942 | 37 days |
| 1943 | 37 days |
| 1944 | 33 days |
| 1945 | 29 days |
| 1946 | 38 days |
| 1947 | 29 days |
| 1948 | 46 days |
| 1949 | 24 days |
| 1950 | 23 days |
| 1951 | 27 days |
| 1952 | 47 days |
| 1953 | 26 days |
| 1954 | 35 days |
| 1955 | 30 days |
| 1956 | 38 days |
| 1957 | 30 days |
| 1958 | 32 days |
| 1959 | 30 days |
| 1960 | 69 days |
| 1961 | 52 days |
| 1962 | 44 days |
| 1963 | 45 days |
| 1964 | 43 days |
| 1965 | 48 days |
| 1966 | 32 days |
| 1967 | 26 days |
| 1968 | 45 days |
| 1969 | 41 days |
| 1970 | 27 days |
| 1971 | 49 days |
| 1972 | 26 days |
| 1973 | 30 days |
| 1974 | 32 days |
| 1975 | 42 days |
| 1976 | 31 days |
| 1977 | 37 days |
| 1978 | 37 days |
| 1979 | 48 days |
| 1980 | 49 days |
| 1981 | 39 days |
| 1982 | 25 days |
| 1983 | 41 days |
| 1984 | 35 days |
| 1985 | 37 days |
| 1986 | 43 days |
| 1987 | 93 days |
| 1988 | 32 days |
| 1989 | 50 days |
| 1990 | 46 days |
| 1991 | 53 days |
| 1992 | 24 days |
| 1993 | 63 days |
| 1994 | 26 days |
| 1995 | 27 days |
| 1996 | 24 days |
| 1997 | 39 days |
| 1998 | 32 days |
| 1999 | 57 days |
| 2000 | 30 days |
| 2001 | 59 days |
| 2002 | 32 days |
| 2003 | 22 days |
| 2004 | 57 days |
| 2005 | 31 days |
| 2006 | 54 days |
| 2007 | 30 days |
| 2008 | 34 days |
| 2009 | 44 days |
| 2010 | 19 days |
| 2011 | 35 days |
| 2012 | 28 days |
| 2013 | 30 days |
| 2014 | 24 days |
| 2015 | 34 days |
| 2016 | 52 days |
| 2017 | 40 days |
| 2018 | 26 days |
| 2019 | 28 days |
| 2020 | 38 days |
| 2021 | 68 days |
| 2022 | 22 days |
| 2023 | 52 days |
| 2024 | 29 days |
| 2025 | 31 days |
| 2026 | 26 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
101 years with a frostAcross 101 years with a frost, the median last spring frost at Mandan Exp STN falls on 14 May and the median first autumn frost on 22 September, which leaves a median of 131 days between them.
In 1987 to 2024 the median growing season was 136 days. That is 8 days more than in 1916 to 1945.
Fitted over all years, the growing season changes by +1.2 days per decade at this station.
| Measure | Median, all years | Earliest period (1916 to 1945) | Recent period (1987 to 2024) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 14 May | 15 May | 14 May | 1 day earlier | -0.5 days per decade |
| First autumn frost | 22 September | 24 September | 28 September | 4 days later | +0.7 days per decade |
| Growing days | 131 days | 128 days | 136 days | 8 days more | +1.2 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
99 years, 1915 to 2024A day with at least 41.8 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 116.1 mm (4.6 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 41.8 mm (1.6 in) | |
| 5 years | 58.3 mm (2.3 in) | |
| 10 years | 70.5 mm (2.8 in) | |
| 25 years | 87.4 mm (3.4 in) | |
| 50 years | 101.2 mm (4.0 in) | |
| 100 years | 116.1 mm (4.6 in) | Longer than the 99 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, 99 years of values from 1915 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: 112.8 mm (4.4 in) in 2001; 111.8 mm (4.4 in) in 2009; 108.0 mm (4.3 in) in 1993.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Climate Twins
2002 to 2024 against 1961 to 1990Over 2002 to 2024, Mandan Exp STN had a mean temperature of 6.0 C (42.8 F) and 428.9 mm (16.9 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Pretty Rock (United States, 101 km away), New England (United States, 153 km away) and Lemmon (United States, 136 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Pretty Rock | United States | 101 km (63 mi) | 5.9 C (42.7 F) | 430.5 mm (16.9 in) | 0.77 |
| New England | United States | 153 km (95 mi) | 6.0 C (42.8 F) | 426.3 mm (16.8 in) | 0.80 |
| Lemmon | United States | 136 km (85 mi) | 6.1 C (43.0 F) | 476.9 mm (18.8 in) | 0.83 |
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.
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Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-14 (14 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-12).