Napoleon Weather Records (USC00326255)
Record envelope, standing records and threshold days for Napoleon (USC00326255), North Dakota, United States, with 134 years of record.
Key Facts for Napoleon
- Napoleon (USC00326255) is a weather station in North Dakota, United States at 46.51 latitude and -99.77 longitude, 604 m (1,980 ft) above sea level.
- The station reports from 1893 to 2026, 134 years of record.
- 1,464 records set at Napoleon still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Napoleon tied a daily record high minimum temperature of 13.3 C (55.9 F) on 26 September 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: North Dakota, United States, 46.51 latitude, -99.77 longitude.
- Elevation: 604 m (1,980 ft).
- Period of record: 1893 to 2026, 134 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
2 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 13.9 C (57.0 F) | -43.3 C (-45.9 F) | 5.0 C (41.0 F) | -30.6 C (-23.1 F) |
| Feb | 17.2 C (63.0 F) | -43.9 C (-47.0 F) | 11.1 C (52.0 F) | -21.7 C (-7.1 F) |
| Mar | 30.6 C (87.1 F) | -36.7 C (-34.1 F) | 20.6 C (69.1 F) | -21.1 C (-6.0 F) |
| Apr | 34.4 C (93.9 F) | -23.9 C (-11.0 F) | 30.6 C (87.1 F) | -13.3 C (8.1 F) |
| May | 41.7 C (107.1 F) | -13.3 C (8.1 F) | 31.7 C (89.1 F) | -6.1 C (21.0 F) |
| Jun | 42.2 C (108.0 F) | -3.9 C (25.0 F) | 31.1 C (88.0 F) | 5.0 C (41.0 F) |
| Jul | 47.8 C (118.0 F) | -3.9 C (25.0 F) | 37.8 C (100.0 F) | 12.8 C (55.0 F) |
| Aug | 43.9 C (111.0 F) | -3.9 C (25.0 F) | 32.2 C (90.0 F) | 2.2 C (36.0 F) |
| Sep | 41.7 C (107.1 F) | -12.2 C (10.0 F) | 28.3 C (82.9 F) | 2.8 C (37.0 F) |
| Oct | 35.0 C (95.0 F) | -22.2 C (-8.0 F) | 25.6 C (78.1 F) | -0.6 C (30.9 F) |
| Nov | 24.4 C (75.9 F) | -32.8 C (-27.0 F) | n/a | n/a |
| Dec | 21.1 C (70.0 F) | -44.4 C (-47.9 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1893 | 18 |
| 1894 | 16 |
| 1895 | 11 |
| 1896 | 15 |
| 1897 | 21 |
| 1898 | 8 |
| 1899 | 19 |
| 1900 | 9 |
| 1901 | 12 |
| 1902 | 9 |
| 1903 | 13 |
| 1904 | 9 |
| 1905 | 18 |
| 1906 | 15 |
| 1907 | 23 |
| 1908 | 19 |
| 1909 | 17 |
| 1910 | 21 |
| 1911 | 24 |
| 1912 | 16 |
| 1913 | 13 |
| 1914 | 18 |
| 1915 | 20 |
| 1916 | 18 |
| 1917 | 27 |
| 1918 | 13 |
| 1919 | 24 |
| 1920 | 4 |
| 1921 | 12 |
| 1922 | 12 |
| 1923 | 10 |
| 1924 | 16 |
| 1925 | 19 |
| 1926 | 12 |
| 1927 | 13 |
| 1928 | 17 |
| 1929 | 20 |
| 1930 | 14 |
| 1931 | 17 |
| 1932 | 16 |
| 1933 | 14 |
| 1934 | 34 |
| 1935 | 14 |
| 1936 | 48 |
| 1937 | 17 |
| 1938 | 9 |
| 1939 | 21 |
| 1940 | 8 |
| 1941 | 16 |
| 1942 | 17 |
| 1943 | 10 |
| 1944 | 4 |
| 1945 | 6 |
| 1946 | 4 |
| 1947 | 11 |
| 1948 | 7 |
| 1949 | 7 |
| 1950 | 16 |
| 1951 | 9 |
| 1952 | 10 |
| 1953 | 9 |
| 1954 | 11 |
| 1955 | 14 |
| 1956 | 10 |
| 1958 | 8 |
| 1959 | 10 |
| 1960 | 3 |
| 1961 | 4 |
| 1962 | 10 |
| 1963 | 12 |
| 1964 | 12 |
| 1965 | 10 |
| 1966 | 4 |
| 1967 | 3 |
| 1968 | 7 |
| 1969 | 9 |
| 1970 | 7 |
| 1971 | 2 |
| 1972 | 10 |
| 1973 | 5 |
| 1974 | 3 |
| 1975 | 9 |
| 1976 | 10 |
| 1977 | 18 |
| 1978 | 3 |
| 1979 | 7 |
| 1980 | 9 |
| 1981 | 7 |
| 1982 | 5 |
| 1983 | 11 |
| 1984 | 3 |
| 1985 | 10 |
| 1986 | 4 |
| 1987 | 7 |
| 1988 | 9 |
| 1989 | 8 |
| 1990 | 10 |
| 1991 | 16 |
| 1992 | 17 |
| 1993 | 4 |
| 1994 | 8 |
| 1995 | 7 |
| 1996 | 11 |
| 1997 | 8 |
| 1998 | 5 |
| 1999 | 7 |
| 2000 | 9 |
| 2001 | 6 |
| 2002 | 4 |
| 2003 | 7 |
| 2004 | 11 |
| 2005 | 12 |
| 2006 | 12 |
| 2007 | 8 |
| 2008 | 5 |
| 2009 | 8 |
| 2010 | 2 |
| 2011 | 5 |
| 2012 | 15 |
| 2013 | 4 |
| 2014 | 5 |
| 2015 | 6 |
| 2016 | 9 |
| 2017 | 3 |
| 2018 | 5 |
| 2019 | 7 |
| 2020 | 2 |
| 2021 | 7 |
| 2022 | 2 |
| 2023 | 6 |
| 2024 | 9 |
| 2025 | 6 |
| 2026 | 3 |
All-Time Record Progression
29 new records| Date | Kind | Detail |
|---|---|---|
| 1927-08-16 | Record daily precipitation | Record daily precipitation 89.4 mm (3.5 in) |
| 1932-04-23 | Record daily precipitation | Record daily precipitation 106.7 mm (4.2 in) |
| 1936-07-06 | Record high maximum temperature | Record high maximum temperature 47.8 C (118.0 F) |
| 1936-07-07 | Record high minimum temperature | Record high minimum temperature 25.0 C (77.0 F) |
| 1936-07-10 | Record high minimum temperature | Record high minimum temperature 27.2 C (81.0 F) |
| 1942-03-26 | Record daily snowfall | Record daily snowfall 26.7 cm (10.5 in) |
| 1950-01-28 | Record snow depth | Record snow depth 71.1 cm (28.0 in) |
| 1950-02-12 | Record snow depth | Record snow depth 73.7 cm (29.0 in) |
| 1950-02-13 | Record snow depth | Record snow depth 78.7 cm (31.0 in) |
| 1950-02-17 | Record snow depth | Record snow depth 83.8 cm (33.0 in) |
| 1965-04-06 | Record daily snowfall | Record daily snowfall 30.5 cm (12.0 in) |
| 1978-01-26 | Record snow depth | Record snow depth 86.4 cm (34.0 in) |
| 1978-01-30 | Record snow depth | Record snow depth 88.9 cm (35.0 in) |
| 1978-02-03 | Record snow depth | Record snow depth 91.4 cm (36.0 in) |
| 1978-02-07 | Record snow depth | Record snow depth 94.0 cm (37.0 in) |
| 1978-02-08 | Record snow depth | Record snow depth 99.1 cm (39.0 in) |
| 1978-02-09 | Record snow depth | Record snow depth 101.6 cm (40.0 in) |
| 1978-02-10 | Record snow depth | Record snow depth 104.1 cm (41.0 in) |
| 1978-02-11 | Record snow depth | Record snow depth 109.2 cm (43.0 in) |
| 1978-02-15 | Record snow depth | Record snow depth 111.8 cm (44.0 in) |
| 1978-02-20 | Record snow depth | Record snow depth 114.3 cm (45.0 in) |
| 1978-02-22 | Record snow depth | Record snow depth 116.8 cm (46.0 in) |
| 1978-03-02 | Record snow depth | Record snow depth 124.5 cm (49.0 in) |
| 1982-03-20 | Record daily snowfall | Record daily snowfall 34.8 cm (13.7 in) |
| 1997-04-06 | Record daily snowfall | Record daily snowfall 38.1 cm (15.0 in) |
| 2014-08-17 | Record daily precipitation | Record daily precipitation 135.1 mm (5.3 in) |
| 2023-03-11 | Record snow depth | Record snow depth 127.0 cm (50.0 in) |
| 2023-03-12 | Record snow depth | Record snow depth 129.5 cm (51.0 in) |
| 2026-04-04 | Record daily snowfall | Record daily snowfall 40.6 cm (16.0 in) |
Wettest Day of Each Month
Aug: 135.1 mm (5.3 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 19.1 mm (0.8 in) | 13 January 1923 |
| Feb | 19.6 mm (0.8 in) | 23 February 2017 |
| Mar | 31.5 mm (1.2 in) | 28 March 2004 |
| Apr | 106.7 mm (4.2 in) | 23 April 1932 |
| May | 81.3 mm (3.2 in) | 29 May 1982 |
| Jun | 96.8 mm (3.8 in) | 20 June 1991 |
| Jul | 104.1 mm (4.1 in) | 5 July 1977 |
| Aug | 135.1 mm (5.3 in) | 17 August 2014 |
| Sep | 81.3 mm (3.2 in) | 2 September 1973 |
| Oct | 61.7 mm (2.4 in) | 10 October 2021 |
| Nov | 33.3 mm (1.3 in) | 8 November 1977 |
| Dec | 38.6 mm (1.5 in) | 26 December 2016 |
Period of Record Coverage
1893 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1893 | 349 | 96% | Yes |
| 1894 | 346 | 95% | Yes |
| 1895 | 352 | 96% | Yes |
| 1896 | 349 | 95% | Yes |
| 1897 | 348 | 95% | Yes |
| 1898 | 350 | 96% | Yes |
| 1899 | 357 | 98% | Yes |
| 1900 | 344 | 94% | Yes |
| 1901 | 360 | 99% | Yes |
| 1902 | 363 | 99% | Yes |
| 1903 | 359 | 98% | Yes |
| 1904 | 363 | 99% | Yes |
| 1905 | 364 | 100% | Yes |
| 1906 | 363 | 99% | Yes |
| 1907 | 364 | 100% | Yes |
| 1908 | 366 | 100% | Yes |
| 1909 | 362 | 99% | Yes |
| 1910 | 359 | 98% | Yes |
| 1911 | 361 | 99% | Yes |
| 1912 | 360 | 98% | Yes |
| 1913 | 359 | 98% | Yes |
| 1914 | 361 | 99% | Yes |
| 1915 | 361 | 99% | Yes |
| 1916 | 363 | 99% | Yes |
| 1917 | 363 | 99% | Yes |
| 1918 | 362 | 99% | Yes |
| 1919 | 364 | 100% | Yes |
| 1920 | 366 | 100% | Yes |
| 1921 | 363 | 99% | Yes |
| 1922 | 360 | 99% | Yes |
| 1923 | 362 | 99% | Yes |
| 1924 | 360 | 98% | Yes |
| 1925 | 360 | 99% | Yes |
| 1926 | 356 | 98% | Yes |
| 1927 | 349 | 96% | Yes |
| 1928 | 359 | 98% | Yes |
| 1929 | 350 | 96% | Yes |
| 1930 | 352 | 96% | Yes |
| 1931 | 358 | 98% | Yes |
| 1932 | 351 | 96% | Yes |
| 1933 | 352 | 96% | Yes |
| 1934 | 351 | 96% | Yes |
| 1935 | 351 | 96% | Yes |
| 1936 | 356 | 97% | Yes |
| 1937 | 357 | 98% | Yes |
| 1938 | 360 | 99% | Yes |
| 1939 | 357 | 98% | Yes |
| 1940 | 358 | 98% | Yes |
| 1941 | 348 | 95% | Yes |
| 1942 | 359 | 98% | Yes |
| 1943 | 365 | 100% | Yes |
| 1944 | 366 | 100% | Yes |
| 1945 | 365 | 100% | Yes |
| 1946 | 364 | 100% | Yes |
| 1947 | 365 | 100% | Yes |
| 1948 | 365 | 100% | Yes |
| 1949 | 365 | 100% | Yes |
| 1950 | 365 | 100% | Yes |
| 1951 | 363 | 99% | Yes |
| 1952 | 364 | 99% | Yes |
| 1953 | 364 | 100% | Yes |
| 1954 | 364 | 100% | Yes |
| 1955 | 349 | 96% | Yes |
| 1956 | 333 | 91% | Yes |
| 1957 | 362 | 99% | Yes |
| 1958 | 362 | 99% | Yes |
| 1959 | 362 | 99% | Yes |
| 1960 | 364 | 99% | Yes |
| 1961 | 364 | 100% | Yes |
| 1962 | 364 | 100% | Yes |
| 1963 | 363 | 99% | Yes |
| 1964 | 366 | 100% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 363 | 99% | Yes |
| 1968 | 364 | 99% | Yes |
| 1969 | 363 | 99% | Yes |
| 1970 | 363 | 99% | Yes |
| 1971 | 325 | 89% | No |
| 1972 | 366 | 100% | Yes |
| 1973 | 333 | 91% | Yes |
| 1974 | 357 | 98% | Yes |
| 1975 | 362 | 99% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 362 | 99% | Yes |
| 1978 | 334 | 92% | Yes |
| 1979 | 329 | 90% | Yes |
| 1980 | 359 | 98% | Yes |
| 1981 | 363 | 99% | Yes |
| 1982 | 352 | 96% | Yes |
| 1983 | 361 | 99% | Yes |
| 1984 | 362 | 99% | Yes |
| 1985 | 360 | 99% | Yes |
| 1986 | 328 | 90% | No |
| 1987 | 361 | 99% | Yes |
| 1988 | 357 | 98% | Yes |
| 1989 | 362 | 99% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 364 | 100% | Yes |
| 1992 | 365 | 100% | Yes |
| 1993 | 364 | 100% | Yes |
| 1994 | 362 | 99% | Yes |
| 1995 | 362 | 99% | Yes |
| 1996 | 364 | 99% | Yes |
| 1997 | 365 | 100% | Yes |
| 1998 | 365 | 100% | Yes |
| 1999 | 362 | 99% | Yes |
| 2000 | 366 | 100% | Yes |
| 2001 | 365 | 100% | Yes |
| 2002 | 365 | 100% | Yes |
| 2003 | 364 | 100% | Yes |
| 2004 | 366 | 100% | Yes |
| 2005 | 364 | 100% | Yes |
| 2006 | 364 | 100% | Yes |
| 2007 | 362 | 99% | Yes |
| 2008 | 362 | 99% | Yes |
| 2009 | 362 | 99% | Yes |
| 2010 | 347 | 95% | Yes |
| 2011 | 360 | 99% | Yes |
| 2012 | 345 | 94% | Yes |
| 2013 | 352 | 96% | Yes |
| 2014 | 345 | 95% | Yes |
| 2015 | 329 | 90% | Yes |
| 2016 | 321 | 88% | No |
| 2017 | 310 | 85% | No |
| 2018 | 322 | 88% | No |
| 2019 | 309 | 85% | No |
| 2020 | 321 | 88% | No |
| 2021 | 315 | 86% | No |
| 2022 | 275 | 75% | No |
| 2023 | 307 | 84% | No |
| 2024 | 336 | 92% | Yes |
| 2025 | 302 | 83% | No |
| 2026 | 234 | 64% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 26 September 2026 | Napoleon, US | daily high min (Tie, Provisional) | 13.3 C (55.9 F) | tie | 76 years | 8 of 100 (Routine) |
| 8 August 2026 | Napoleon, US | daily low min | 2.8 C (37.0 F) | 0.5 C (0.9 F) | 87 years | 37 of 100 (Notable) |
| 4 April 2026 | Napoleon, US | daily rain | 27.9 mm (1.1 in) | 15.2 mm (0.6 in) | 124 years | 60 of 100 (Major) |
| 4 April 2026 | Napoleon, US | all-time snowfall | 40.6 cm (16.0 in) | 2.5 cm (1.0 in) | 28 years | 41 of 100 (Notable) |
| 2 April 2026 | Napoleon, US | daily rain | 63.5 mm (2.5 in) | 40.6 mm (1.6 in) | 27 years | 58 of 100 (Notable) |
| 16 February 2026 | Napoleon, US | daily high max | 11.1 C (52.0 F) | 0.5 C (0.9 F) | 44 years | 23 of 100 (Routine) |
| 9 February 2026 | Napoleon, US | daily high min | -1.1 C (30.0 F) | 1.7 C (3.1 F) | 80 years | 35 of 100 (Notable) |
| 5 December 2025 | Napoleon, US | daily rain | 25.4 mm (1.0 in) | 15.2 mm (0.6 in) | 88 years | 76 of 100 (Major) |
| 29 November 2025 | Napoleon, US | daily rain (Tie) | 10.2 mm (0.4 in) | tie | 8 years | 3 of 100 (Routine) |
| 26 November 2025 | Napoleon, US | daily rain | 15.2 mm (0.6 in) | 8.8 mm (0.35 in) | 11 years | 20 of 100 (Routine) |
| 27 October 2025 | Napoleon, US | daily high min | 10.6 C (51.1 F) | 2.3 C (4.1 F) | 43 years | 26 of 100 (Routine) |
| 1 October 2025 | Napoleon, US | daily high min (Tie) | 13.3 C (55.9 F) | tie | 72 years | 7 of 100 (Routine) |
| 17 July 2025 | Napoleon, US | daily low max | 17.2 C (63.0 F) | 2.2 C (4.0 F) | 110 years | 44 of 100 (Notable) |
| 17 July 2025 | Napoleon, US | daily low min (Tie) | 3.9 C (39.0 F) | tie | 114 years | 10 of 100 (Routine) |
| 22 May 2025 | Napoleon, US | daily low max | 5.6 C (42.1 F) | 0.5 C (0.9 F) | 38 years | 21 of 100 (Routine) |
| 21 May 2025 | Napoleon, US | daily low max | 5.6 C (42.1 F) | 1.6 C (2.9 F) | 62 years | 30 of 100 (Routine) |
| 20 May 2025 | Napoleon, US | daily rain | 43.9 mm (1.7 in) | 5.3 mm (0.21 in) | 4 years | 16 of 100 (Routine) |
| 20 May 2025 | Napoleon, US | daily low max (Tie) | 5.0 C (41.0 F) | tie | 94 years | 9 of 100 (Routine) |
| 13 May 2025 | Napoleon, US | daily high max (Tie) | 32.2 C (90.0 F) | tie | 92 years | 9 of 100 (Routine) |
| 13 May 2025 | Napoleon, US | daily high min (Tie) | 16.1 C (61.0 F) | tie | 48 years | 6 of 100 (Routine) |
Climate Trend
120 complete years, 1893 to 2024| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1893 | 2.6 C | -2.11 C |
| 1894 | 5.1 C | +0.39 C |
| 1895 | 3.7 C | -0.99 C |
| 1896 | 3.2 C | -1.53 C |
| 1897 | 3.5 C | -1.27 C |
| 1898 | 4.6 C | -0.12 C |
| 1899 | 3.0 C | -1.71 C |
| 1900 | 5.2 C | +0.47 C |
| 1901 | 5.2 C | +0.49 C |
| 1902 | 4.6 C | -0.12 C |
| 1903 | 4.3 C | -0.39 C |
| 1904 | 3.2 C | -1.49 C |
| 1905 | 3.7 C | -1.06 C |
| 1906 | 3.8 C | -0.97 C |
| 1907 | 2.4 C | -2.37 C |
| 1908 | 4.7 C | -0.07 C |
| 1909 | 2.6 C | -2.08 C |
| 1910 | 4.9 C | +0.14 C |
| 1911 | 3.8 C | -0.89 C |
| 1912 | 3.2 C | -1.54 C |
| 1913 | 4.1 C | -0.58 C |
| 1914 | 4.5 C | -0.25 C |
| 1915 | 4.1 C | -0.67 C |
| 1916 | 2.4 C | -2.32 C |
| 1917 | 2.5 C | -2.26 C |
| 1918 | 4.4 C | -0.37 C |
| 1919 | 4.1 C | -0.65 C |
| 1920 | 4.5 C | -0.19 C |
| 1921 | 5.9 C | +1.14 C |
| 1922 | 3.9 C | -0.86 C |
| 1923 | 4.3 C | -0.46 C |
| 1924 | 3.0 C | -1.71 C |
| 1925 | 4.5 C | -0.24 C |
| 1926 | 4.4 C | -0.32 C |
| 1927 | 3.5 C | -1.21 C |
| 1928 | 5.4 C | +0.66 C |
| 1929 | 3.5 C | -1.20 C |
| 1930 | 5.5 C | +0.78 C |
| 1931 | 7.1 C | +2.36 C |
| 1932 | 4.6 C | -0.13 C |
| 1933 | 5.7 C | +1.01 C |
| 1934 | 7.0 C | +2.30 C |
| 1935 | 4.8 C | +0.03 C |
| 1936 | 4.2 C | -0.51 C |
| 1937 | 3.8 C | -0.92 C |
| 1938 | 5.7 C | +1.00 C |
| 1939 | 6.1 C | +1.38 C |
| 1940 | 5.6 C | +0.85 C |
| 1941 | 6.2 C | +1.44 C |
| 1942 | 5.1 C | +0.33 C |
| 1943 | 4.8 C | +0.03 C |
| 1944 | 5.2 C | +0.50 C |
| 1945 | 4.1 C | -0.60 C |
| 1946 | 5.1 C | +0.36 C |
| 1947 | 4.7 C | -0.02 C |
| 1948 | 4.7 C | -0.07 C |
| 1949 | 4.5 C | -0.19 C |
| 1950 | 2.5 C | -2.25 C |
| 1951 | 2.7 C | -2.07 C |
| 1952 | 5.5 C | +0.78 C |
| 1953 | 6.4 C | +1.70 C |
| 1954 | 6.1 C | +1.41 C |
| 1955 | 5.1 C | +0.37 C |
| 1957 | 5.7 C | +0.95 C |
| 1958 | 5.8 C | +1.08 C |
| 1959 | 5.1 C | +0.42 C |
| 1960 | 4.9 C | +0.19 C |
| 1961 | 5.9 C | +1.14 C |
| 1962 | 4.9 C | +0.20 C |
| 1963 | 6.2 C | +1.51 C |
| 1964 | 5.0 C | +0.27 C |
| 1965 | 3.7 C | -0.99 C |
| 1966 | 4.0 C | -0.70 C |
| 1967 | 4.9 C | +0.18 C |
| 1968 | 4.9 C | +0.16 C |
| 1969 | 4.4 C | -0.36 C |
| 1970 | 4.0 C | -0.68 C |
| 1972 | 3.3 C | -1.46 C |
| 1975 | 4.3 C | -0.45 C |
| 1976 | 5.6 C | +0.83 C |
| 1977 | 5.3 C | +0.57 C |
| 1980 | 5.4 C | +0.68 C |
| 1981 | 6.3 C | +1.57 C |
| 1982 | 3.7 C | -0.98 C |
| 1983 | 5.4 C | +0.69 C |
| 1984 | 5.3 C | +0.59 C |
| 1985 | 3.6 C | -1.11 C |
| 1987 | 7.4 C | +2.66 C |
| 1989 | 4.4 C | -0.34 C |
| 1990 | 5.9 C | +1.19 C |
| 1991 | 6.0 C | +1.27 C |
| 1992 | 5.3 C | +0.57 C |
| 1993 | 3.4 C | -1.29 C |
| 1994 | 4.5 C | -0.22 C |
| 1995 | 4.4 C | -0.32 C |
| 1996 | 2.8 C | -1.97 C |
| 1997 | 4.8 C | +0.12 C |
| 1998 | 6.5 C | +1.76 C |
| 1999 | 6.5 C | +1.76 C |
| 2000 | 5.4 C | +0.63 C |
| 2001 | 5.7 C | +1.01 C |
| 2002 | 5.5 C | +0.76 C |
| 2003 | 5.1 C | +0.42 C |
| 2004 | 5.2 C | +0.52 C |
| 2005 | 6.2 C | +1.50 C |
| 2006 | 6.8 C | +2.08 C |
| 2007 | 5.6 C | +0.85 C |
| 2008 | 4.4 C | -0.36 C |
| 2009 | 3.7 C | -0.99 C |
| 2010 | 5.1 C | +0.41 C |
| 2011 | 4.9 C | +0.17 C |
| 2013 | 4.0 C | -0.72 C |
| 2014 | 3.7 C | -1.06 C |
| 2015 | 6.2 C | +1.46 C |
| 2016 | 6.5 C | +1.77 C |
| 2017 | 5.5 C | +0.79 C |
| 2018 | 4.2 C | -0.55 C |
| 2019 | 3.0 C | -1.73 C |
| 2020 | 5.6 C | +0.90 C |
| 2024 | 5.9 C | +1.13 C |
The annual mean temperature here has risen by 0.1 C (0.1 to 0.2) per decade over 1893 to 2024. In Fahrenheit: 0.2 F (0.1 to 0.3) per decade. The slope is a straight line fitted to 120 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 | 0.2 F (0.1 to 0.3) per decade | 1893 to 2024 | 120 | Rise |
| Mean daily maximum | 0.00 C (-0.06 to 0.05) per decade | -0.01 F (-0.11 to 0.10) per decade | 1893 to 2024 | 120 | Not clearly different from zero |
| Mean daily minimum | 0.2 C (0.2 to 0.3) per decade | 0.4 F (0.3 to 0.5) per decade | 1893 to 2024 | 120 | Rise |
A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.
Extremes by Year
1893 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 47.8 C (118.0 F) | 1936 | 37.8 C (100.0 F) | 134 |
| Coldest night (TNn) | -44.4 C (-47.9 F) | 1916 | -35.6 C (-32.1 F) | 134 |
| Wettest day (Rx1day) | 135.1 mm (5.3 in) | 2014 | 43.3 mm (1.7 in) | 134 |
| Wettest five days (Rx5day) | 167.4 mm (6.6 in) | 1977 | 66.1 mm (2.6 in) | 134 |
| Longest dry spell (CDD) | 80 days | 1952 | 32 days | 134 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1893 | 40.0 C (104.0 F) |
| 1894 | 40.0 C (104.0 F) |
| 1895 | 36.7 C (98.1 F) |
| 1896 | 40.0 C (104.0 F) |
| 1897 | 41.7 C (107.1 F) |
| 1898 | 35.6 C (96.1 F) |
| 1899 | 38.9 C (102.0 F) |
| 1900 | 42.2 C (108.0 F) |
| 1901 | 40.6 C (105.1 F) |
| 1902 | 43.9 C (111.0 F) |
| 1903 | 42.2 C (108.0 F) |
| 1904 | 36.7 C (98.1 F) |
| 1905 | 37.8 C (100.0 F) |
| 1906 | 40.0 C (104.0 F) |
| 1907 | 37.2 C (99.0 F) |
| 1908 | 39.4 C (102.9 F) |
| 1909 | 36.1 C (97.0 F) |
| 1910 | 42.2 C (108.0 F) |
| 1911 | 40.6 C (105.1 F) |
| 1912 | 36.7 C (98.1 F) |
| 1913 | 38.9 C (102.0 F) |
| 1914 | 42.8 C (109.0 F) |
| 1915 | 33.3 C (91.9 F) |
| 1916 | 37.2 C (99.0 F) |
| 1917 | 43.9 C (111.0 F) |
| 1918 | 38.9 C (102.0 F) |
| 1919 | 37.8 C (100.0 F) |
| 1920 | 36.7 C (98.1 F) |
| 1921 | 40.6 C (105.1 F) |
| 1922 | 38.9 C (102.0 F) |
| 1923 | 33.9 C (93.0 F) |
| 1924 | 36.1 C (97.0 F) |
| 1925 | 41.7 C (107.1 F) |
| 1926 | 40.0 C (104.0 F) |
| 1927 | 35.0 C (95.0 F) |
| 1928 | 37.2 C (99.0 F) |
| 1929 | 40.6 C (105.1 F) |
| 1930 | 41.7 C (107.1 F) |
| 1931 | 43.9 C (111.0 F) |
| 1932 | 38.9 C (102.0 F) |
| 1933 | 42.2 C (108.0 F) |
| 1934 | 42.2 C (108.0 F) |
| 1935 | 40.6 C (105.1 F) |
| 1936 | 47.8 C (118.0 F) |
| 1937 | 41.1 C (106.0 F) |
| 1938 | 38.9 C (102.0 F) |
| 1939 | 38.9 C (102.0 F) |
| 1940 | 38.9 C (102.0 F) |
| 1941 | 42.8 C (109.0 F) |
| 1942 | 35.0 C (95.0 F) |
| 1943 | 34.4 C (93.9 F) |
| 1944 | 36.7 C (98.1 F) |
| 1945 | 38.9 C (102.0 F) |
| 1946 | 37.8 C (100.0 F) |
| 1947 | 38.3 C (100.9 F) |
| 1948 | 37.8 C (100.0 F) |
| 1949 | 38.3 C (100.9 F) |
| 1950 | 35.0 C (95.0 F) |
| 1951 | 34.4 C (93.9 F) |
| 1952 | 38.9 C (102.0 F) |
| 1953 | 37.8 C (100.0 F) |
| 1954 | 36.7 C (98.1 F) |
| 1955 | 37.2 C (99.0 F) |
| 1956 | 36.1 C (97.0 F) |
| 1957 | 36.7 C (98.1 F) |
| 1958 | 40.6 C (105.1 F) |
| 1959 | 40.6 C (105.1 F) |
| 1960 | 39.4 C (102.9 F) |
| 1961 | 39.4 C (102.9 F) |
| 1962 | 35.6 C (96.1 F) |
| 1963 | 38.9 C (102.0 F) |
| 1964 | 37.2 C (99.0 F) |
| 1965 | 36.1 C (97.0 F) |
| 1966 | 36.1 C (97.0 F) |
| 1967 | 38.3 C (100.9 F) |
| 1968 | 35.6 C (96.1 F) |
| 1969 | 36.1 C (97.0 F) |
| 1970 | 38.9 C (102.0 F) |
| 1971 | 40.0 C (104.0 F) |
| 1972 | 37.8 C (100.0 F) |
| 1973 | 42.2 C (108.0 F) |
| 1974 | 39.4 C (102.9 F) |
| 1975 | 40.0 C (104.0 F) |
| 1976 | 40.0 C (104.0 F) |
| 1977 | 37.2 C (99.0 F) |
| 1978 | 38.9 C (102.0 F) |
| 1979 | 35.0 C (95.0 F) |
| 1980 | 38.3 C (100.9 F) |
| 1981 | 35.0 C (95.0 F) |
| 1982 | 39.4 C (102.9 F) |
| 1983 | 38.9 C (102.0 F) |
| 1984 | 37.2 C (99.0 F) |
| 1985 | 37.2 C (99.0 F) |
| 1986 | 36.7 C (98.1 F) |
| 1987 | 36.7 C (98.1 F) |
| 1988 | 38.9 C (102.0 F) |
| 1989 | 37.8 C (100.0 F) |
| 1990 | 33.9 C (93.0 F) |
| 1991 | 37.8 C (100.0 F) |
| 1992 | 34.4 C (93.9 F) |
| 1993 | 32.2 C (90.0 F) |
| 1994 | 32.8 C (91.0 F) |
| 1995 | 34.4 C (93.9 F) |
| 1996 | 35.6 C (96.1 F) |
| 1997 | 35.0 C (95.0 F) |
| 1998 | 35.0 C (95.0 F) |
| 1999 | 38.3 C (100.9 F) |
| 2000 | 35.6 C (96.1 F) |
| 2001 | 37.2 C (99.0 F) |
| 2002 | 41.1 C (106.0 F) |
| 2003 | 40.0 C (104.0 F) |
| 2004 | 36.7 C (98.1 F) |
| 2005 | 36.7 C (98.1 F) |
| 2006 | 41.7 C (107.1 F) |
| 2007 | 37.8 C (100.0 F) |
| 2008 | 34.4 C (93.9 F) |
| 2009 | 35.6 C (96.1 F) |
| 2010 | 34.4 C (93.9 F) |
| 2011 | 36.1 C (97.0 F) |
| 2012 | 38.9 C (102.0 F) |
| 2013 | 38.3 C (100.9 F) |
| 2014 | 35.6 C (96.1 F) |
| 2015 | 36.7 C (98.1 F) |
| 2016 | 34.4 C (93.9 F) |
| 2017 | 37.2 C (99.0 F) |
| 2018 | 35.6 C (96.1 F) |
| 2019 | 32.2 C (90.0 F) |
| 2020 | 33.9 C (93.0 F) |
| 2021 | 37.2 C (99.0 F) |
| 2022 | 36.7 C (98.1 F) |
| 2023 | 35.6 C (96.1 F) |
| 2024 | 32.2 C (90.0 F) |
| 2025 | 32.2 C (90.0 F) |
| 2026 | 37.8 C (100.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1893 | -42.2 C (-44.0 F) |
| 1894 | -36.1 C (-33.0 F) |
| 1895 | -40.0 C (-40.0 F) |
| 1896 | -31.7 C (-25.1 F) |
| 1897 | -35.6 C (-32.1 F) |
| 1898 | -31.1 C (-24.0 F) |
| 1899 | -40.0 C (-40.0 F) |
| 1900 | -36.1 C (-33.0 F) |
| 1901 | -35.6 C (-32.1 F) |
| 1902 | -34.4 C (-29.9 F) |
| 1903 | -38.9 C (-38.0 F) |
| 1904 | -40.6 C (-41.1 F) |
| 1905 | -42.8 C (-45.0 F) |
| 1906 | -37.2 C (-35.0 F) |
| 1907 | -40.0 C (-40.0 F) |
| 1908 | -32.8 C (-27.0 F) |
| 1909 | -38.9 C (-38.0 F) |
| 1910 | -37.8 C (-36.0 F) |
| 1911 | -33.9 C (-29.0 F) |
| 1912 | -41.1 C (-42.0 F) |
| 1913 | -40.6 C (-41.1 F) |
| 1914 | -37.8 C (-36.0 F) |
| 1915 | -40.6 C (-41.1 F) |
| 1916 | -44.4 C (-47.9 F) |
| 1917 | -41.7 C (-43.1 F) |
| 1918 | -38.9 C (-38.0 F) |
| 1919 | -40.0 C (-40.0 F) |
| 1920 | -38.9 C (-38.0 F) |
| 1921 | -33.3 C (-27.9 F) |
| 1922 | -36.7 C (-34.1 F) |
| 1923 | -35.0 C (-31.0 F) |
| 1924 | -38.3 C (-36.9 F) |
| 1925 | -37.2 C (-35.0 F) |
| 1926 | -34.4 C (-29.9 F) |
| 1927 | -36.1 C (-33.0 F) |
| 1928 | -38.3 C (-36.9 F) |
| 1929 | -38.9 C (-38.0 F) |
| 1930 | -36.7 C (-34.1 F) |
| 1931 | -29.4 C (-20.9 F) |
| 1932 | -34.4 C (-29.9 F) |
| 1933 | -40.6 C (-41.1 F) |
| 1934 | -32.2 C (-26.0 F) |
| 1935 | -38.9 C (-38.0 F) |
| 1936 | -43.9 C (-47.0 F) |
| 1937 | -37.2 C (-35.0 F) |
| 1938 | -35.0 C (-31.0 F) |
| 1939 | -40.6 C (-41.1 F) |
| 1940 | -34.4 C (-29.9 F) |
| 1941 | -32.2 C (-26.0 F) |
| 1942 | -35.6 C (-32.1 F) |
| 1943 | -38.9 C (-38.0 F) |
| 1944 | -36.7 C (-34.1 F) |
| 1945 | -34.4 C (-29.9 F) |
| 1946 | -35.0 C (-31.0 F) |
| 1947 | -35.0 C (-31.0 F) |
| 1948 | -36.7 C (-34.1 F) |
| 1949 | -35.6 C (-32.1 F) |
| 1950 | -37.2 C (-35.0 F) |
| 1951 | -38.3 C (-36.9 F) |
| 1952 | -32.2 C (-26.0 F) |
| 1953 | -32.8 C (-27.0 F) |
| 1954 | -39.4 C (-38.9 F) |
| 1955 | -34.4 C (-29.9 F) |
| 1956 | -33.9 C (-29.0 F) |
| 1957 | -35.6 C (-32.1 F) |
| 1958 | -36.1 C (-33.0 F) |
| 1959 | -36.7 C (-34.1 F) |
| 1960 | -31.7 C (-25.1 F) |
| 1961 | -36.7 C (-34.1 F) |
| 1962 | -36.7 C (-34.1 F) |
| 1963 | -35.6 C (-32.1 F) |
| 1964 | -35.6 C (-32.1 F) |
| 1965 | -35.6 C (-32.1 F) |
| 1966 | -37.8 C (-36.0 F) |
| 1967 | -39.4 C (-38.9 F) |
| 1968 | -38.9 C (-38.0 F) |
| 1969 | -32.8 C (-27.0 F) |
| 1970 | -40.0 C (-40.0 F) |
| 1971 | -36.7 C (-34.1 F) |
| 1972 | -38.3 C (-36.9 F) |
| 1973 | -32.8 C (-27.0 F) |
| 1974 | -33.3 C (-27.9 F) |
| 1975 | -28.9 C (-20.0 F) |
| 1976 | -33.3 C (-27.9 F) |
| 1977 | -35.6 C (-32.1 F) |
| 1978 | -35.0 C (-31.0 F) |
| 1979 | -36.7 C (-34.1 F) |
| 1980 | -31.7 C (-25.1 F) |
| 1981 | -30.0 C (-22.0 F) |
| 1982 | -37.2 C (-35.0 F) |
| 1983 | -39.4 C (-38.9 F) |
| 1984 | -34.4 C (-29.9 F) |
| 1985 | -36.7 C (-34.1 F) |
| 1986 | -31.7 C (-25.1 F) |
| 1987 | -26.7 C (-16.1 F) |
| 1988 | -35.0 C (-31.0 F) |
| 1989 | -36.7 C (-34.1 F) |
| 1990 | -36.1 C (-33.0 F) |
| 1991 | -30.0 C (-22.0 F) |
| 1992 | -28.3 C (-18.9 F) |
| 1993 | -32.8 C (-27.0 F) |
| 1994 | -40.0 C (-40.0 F) |
| 1995 | -31.1 C (-24.0 F) |
| 1996 | -37.2 C (-35.0 F) |
| 1997 | -32.8 C (-27.0 F) |
| 1998 | -31.1 C (-24.0 F) |
| 1999 | -33.9 C (-29.0 F) |
| 2000 | -33.3 C (-27.9 F) |
| 2001 | -30.6 C (-23.1 F) |
| 2002 | -29.4 C (-20.9 F) |
| 2003 | -32.8 C (-27.0 F) |
| 2004 | -33.9 C (-29.0 F) |
| 2005 | -33.9 C (-29.0 F) |
| 2006 | -30.0 C (-22.0 F) |
| 2007 | -32.8 C (-27.0 F) |
| 2008 | -33.9 C (-29.0 F) |
| 2009 | -40.6 C (-41.1 F) |
| 2010 | -36.1 C (-33.0 F) |
| 2011 | -30.6 C (-23.1 F) |
| 2012 | -26.7 C (-16.1 F) |
| 2013 | -32.2 C (-26.0 F) |
| 2014 | -32.8 C (-27.0 F) |
| 2015 | -29.4 C (-20.9 F) |
| 2016 | -31.1 C (-24.0 F) |
| 2017 | -31.1 C (-24.0 F) |
| 2018 | -32.8 C (-27.0 F) |
| 2019 | -38.3 C (-36.9 F) |
| 2020 | -32.2 C (-26.0 F) |
| 2021 | -34.4 C (-29.9 F) |
| 2022 | -32.2 C (-26.0 F) |
| 2023 | -32.8 C (-27.0 F) |
| 2024 | -32.8 C (-27.0 F) |
| 2025 | -38.3 C (-36.9 F) |
| 2026 | -30.6 C (-23.1 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1893 | 40.1 mm (1.6 in) |
| 1894 | 40.6 mm (1.6 in) |
| 1895 | 38.6 mm (1.5 in) |
| 1896 | 34.3 mm (1.4 in) |
| 1897 | 77.5 mm (3.1 in) |
| 1898 | 39.6 mm (1.6 in) |
| 1899 | 40.6 mm (1.6 in) |
| 1900 | 57.9 mm (2.3 in) |
| 1901 | 31.8 mm (1.3 in) |
| 1902 | 57.2 mm (2.3 in) |
| 1903 | 45.0 mm (1.8 in) |
| 1904 | 38.1 mm (1.5 in) |
| 1905 | 38.1 mm (1.5 in) |
| 1906 | 30.7 mm (1.2 in) |
| 1907 | 36.8 mm (1.4 in) |
| 1908 | 47.8 mm (1.9 in) |
| 1909 | 42.2 mm (1.7 in) |
| 1910 | 39.6 mm (1.6 in) |
| 1911 | 27.2 mm (1.1 in) |
| 1912 | 58.9 mm (2.3 in) |
| 1913 | 36.8 mm (1.4 in) |
| 1914 | 40.6 mm (1.6 in) |
| 1915 | 38.9 mm (1.5 in) |
| 1916 | 33.0 mm (1.3 in) |
| 1917 | 37.1 mm (1.5 in) |
| 1918 | 39.4 mm (1.6 in) |
| 1919 | 26.7 mm (1.1 in) |
| 1920 | 38.9 mm (1.5 in) |
| 1921 | 40.6 mm (1.6 in) |
| 1922 | 25.9 mm (1.0 in) |
| 1923 | 51.3 mm (2.0 in) |
| 1924 | 64.8 mm (2.6 in) |
| 1925 | 26.2 mm (1.0 in) |
| 1926 | 34.5 mm (1.4 in) |
| 1927 | 89.4 mm (3.5 in) |
| 1928 | 63.5 mm (2.5 in) |
| 1929 | 33.0 mm (1.3 in) |
| 1930 | 52.1 mm (2.1 in) |
| 1931 | 32.5 mm (1.3 in) |
| 1932 | 106.7 mm (4.2 in) |
| 1933 | 23.4 mm (0.9 in) |
| 1934 | 69.9 mm (2.8 in) |
| 1935 | 49.5 mm (1.9 in) |
| 1936 | 25.4 mm (1.0 in) |
| 1937 | 30.5 mm (1.2 in) |
| 1938 | 38.1 mm (1.5 in) |
| 1939 | 61.0 mm (2.4 in) |
| 1940 | 24.6 mm (1.0 in) |
| 1941 | 50.8 mm (2.0 in) |
| 1942 | 44.5 mm (1.8 in) |
| 1943 | 30.7 mm (1.2 in) |
| 1944 | 66.0 mm (2.6 in) |
| 1945 | 25.4 mm (1.0 in) |
| 1946 | 34.8 mm (1.4 in) |
| 1947 | 50.8 mm (2.0 in) |
| 1948 | 42.7 mm (1.7 in) |
| 1949 | 55.9 mm (2.2 in) |
| 1950 | 91.7 mm (3.6 in) |
| 1951 | 43.2 mm (1.7 in) |
| 1952 | 30.5 mm (1.2 in) |
| 1953 | 46.5 mm (1.8 in) |
| 1954 | 51.3 mm (2.0 in) |
| 1955 | 61.7 mm (2.4 in) |
| 1956 | 91.9 mm (3.6 in) |
| 1957 | 27.7 mm (1.1 in) |
| 1958 | 31.2 mm (1.2 in) |
| 1959 | 18.8 mm (0.7 in) |
| 1960 | 35.3 mm (1.4 in) |
| 1961 | 20.3 mm (0.8 in) |
| 1962 | 65.5 mm (2.6 in) |
| 1963 | 36.8 mm (1.4 in) |
| 1964 | 37.6 mm (1.5 in) |
| 1965 | 97.0 mm (3.8 in) |
| 1966 | 63.0 mm (2.5 in) |
| 1967 | 31.5 mm (1.2 in) |
| 1968 | 47.0 mm (1.9 in) |
| 1969 | 58.4 mm (2.3 in) |
| 1970 | 53.3 mm (2.1 in) |
| 1971 | 52.1 mm (2.1 in) |
| 1972 | 27.2 mm (1.1 in) |
| 1973 | 81.3 mm (3.2 in) |
| 1974 | 29.0 mm (1.1 in) |
| 1975 | 40.6 mm (1.6 in) |
| 1976 | 25.9 mm (1.0 in) |
| 1977 | 104.1 mm (4.1 in) |
| 1978 | 52.1 mm (2.1 in) |
| 1979 | 66.3 mm (2.6 in) |
| 1980 | 91.9 mm (3.6 in) |
| 1981 | 34.5 mm (1.4 in) |
| 1982 | 81.3 mm (3.2 in) |
| 1983 | 28.4 mm (1.1 in) |
| 1984 | 40.6 mm (1.6 in) |
| 1985 | 49.0 mm (1.9 in) |
| 1986 | 43.4 mm (1.7 in) |
| 1987 | 55.4 mm (2.2 in) |
| 1988 | 39.9 mm (1.6 in) |
| 1989 | 73.7 mm (2.9 in) |
| 1990 | 33.8 mm (1.3 in) |
| 1991 | 96.8 mm (3.8 in) |
| 1992 | 23.6 mm (0.9 in) |
| 1993 | 60.5 mm (2.4 in) |
| 1994 | 48.3 mm (1.9 in) |
| 1995 | 58.4 mm (2.3 in) |
| 1996 | 54.1 mm (2.1 in) |
| 1997 | 47.0 mm (1.9 in) |
| 1998 | 58.9 mm (2.3 in) |
| 1999 | 37.3 mm (1.5 in) |
| 2000 | 48.3 mm (1.9 in) |
| 2001 | 52.6 mm (2.1 in) |
| 2002 | 18.3 mm (0.7 in) |
| 2003 | 26.7 mm (1.1 in) |
| 2004 | 37.3 mm (1.5 in) |
| 2005 | 57.7 mm (2.3 in) |
| 2006 | 40.1 mm (1.6 in) |
| 2007 | 58.9 mm (2.3 in) |
| 2008 | 31.2 mm (1.2 in) |
| 2009 | 62.2 mm (2.4 in) |
| 2010 | 57.2 mm (2.3 in) |
| 2011 | 61.0 mm (2.4 in) |
| 2012 | 64.0 mm (2.5 in) |
| 2013 | 59.9 mm (2.4 in) |
| 2014 | 135.1 mm (5.3 in) |
| 2015 | 37.6 mm (1.5 in) |
| 2016 | 42.7 mm (1.7 in) |
| 2017 | 78.5 mm (3.1 in) |
| 2018 | 49.5 mm (1.9 in) |
| 2019 | 52.8 mm (2.1 in) |
| 2020 | 35.6 mm (1.4 in) |
| 2021 | 65.8 mm (2.6 in) |
| 2022 | 35.6 mm (1.4 in) |
| 2023 | 55.6 mm (2.2 in) |
| 2024 | 51.3 mm (2.0 in) |
| 2025 | 43.9 mm (1.7 in) |
| 2026 | 63.5 mm (2.5 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1893 | 66.0 mm (2.6 in) |
| 1894 | 41.9 mm (1.6 in) |
| 1895 | 73.9 mm (2.9 in) |
| 1896 | 50.9 mm (2.0 in) |
| 1897 | 115.5 mm (4.5 in) |
| 1898 | 65.0 mm (2.6 in) |
| 1899 | 69.9 mm (2.8 in) |
| 1900 | 85.6 mm (3.4 in) |
| 1901 | 51.2 mm (2.0 in) |
| 1902 | 72.7 mm (2.9 in) |
| 1903 | 88.2 mm (3.5 in) |
| 1904 | 45.5 mm (1.8 in) |
| 1905 | 50.0 mm (2.0 in) |
| 1906 | 55.1 mm (2.2 in) |
| 1907 | 52.5 mm (2.1 in) |
| 1908 | 50.4 mm (2.0 in) |
| 1909 | 58.4 mm (2.3 in) |
| 1910 | 51.5 mm (2.0 in) |
| 1911 | 40.2 mm (1.6 in) |
| 1912 | 69.9 mm (2.8 in) |
| 1913 | 41.1 mm (1.6 in) |
| 1914 | 66.8 mm (2.6 in) |
| 1915 | 51.1 mm (2.0 in) |
| 1916 | 58.9 mm (2.3 in) |
| 1917 | 40.2 mm (1.6 in) |
| 1918 | 61.0 mm (2.4 in) |
| 1919 | 58.9 mm (2.3 in) |
| 1920 | 67.3 mm (2.6 in) |
| 1921 | 58.4 mm (2.3 in) |
| 1922 | 46.2 mm (1.8 in) |
| 1923 | 83.5 mm (3.3 in) |
| 1924 | 93.0 mm (3.7 in) |
| 1925 | 58.9 mm (2.3 in) |
| 1926 | 47.5 mm (1.9 in) |
| 1927 | 119.6 mm (4.7 in) |
| 1928 | 92.9 mm (3.7 in) |
| 1929 | 63.2 mm (2.5 in) |
| 1930 | 53.4 mm (2.1 in) |
| 1931 | 66.1 mm (2.6 in) |
| 1932 | 113.8 mm (4.5 in) |
| 1933 | 37.1 mm (1.5 in) |
| 1934 | 72.3 mm (2.8 in) |
| 1935 | 77.7 mm (3.1 in) |
| 1936 | 26.0 mm (1.0 in) |
| 1937 | 57.2 mm (2.3 in) |
| 1938 | 99.8 mm (3.9 in) |
| 1939 | 86.1 mm (3.4 in) |
| 1940 | 35.9 mm (1.4 in) |
| 1941 | 92.8 mm (3.7 in) |
| 1942 | 83.4 mm (3.3 in) |
| 1943 | 78.0 mm (3.1 in) |
| 1944 | 71.9 mm (2.8 in) |
| 1945 | 49.5 mm (1.9 in) |
| 1946 | 56.9 mm (2.2 in) |
| 1947 | 81.0 mm (3.2 in) |
| 1948 | 65.6 mm (2.6 in) |
| 1949 | 71.6 mm (2.8 in) |
| 1950 | 99.5 mm (3.9 in) |
| 1951 | 48.0 mm (1.9 in) |
| 1952 | 51.0 mm (2.0 in) |
| 1953 | 60.8 mm (2.4 in) |
| 1954 | 78.4 mm (3.1 in) |
| 1955 | 88.6 mm (3.5 in) |
| 1956 | 91.9 mm (3.6 in) |
| 1957 | 54.4 mm (2.1 in) |
| 1958 | 39.1 mm (1.5 in) |
| 1959 | 32.8 mm (1.3 in) |
| 1960 | 72.1 mm (2.8 in) |
| 1961 | 35.1 mm (1.4 in) |
| 1962 | 71.2 mm (2.8 in) |
| 1963 | 49.3 mm (1.9 in) |
| 1964 | 74.0 mm (2.9 in) |
| 1965 | 106.1 mm (4.2 in) |
| 1966 | 66.8 mm (2.6 in) |
| 1967 | 40.1 mm (1.6 in) |
| 1968 | 84.7 mm (3.3 in) |
| 1969 | 91.7 mm (3.6 in) |
| 1970 | 59.4 mm (2.3 in) |
| 1971 | 67.6 mm (2.7 in) |
| 1972 | 38.4 mm (1.5 in) |
| 1973 | 142.3 mm (5.6 in) |
| 1974 | 48.0 mm (1.9 in) |
| 1975 | 64.0 mm (2.5 in) |
| 1976 | 29.0 mm (1.1 in) |
| 1977 | 167.4 mm (6.6 in) |
| 1978 | 58.7 mm (2.3 in) |
| 1979 | 106.4 mm (4.2 in) |
| 1980 | 97.5 mm (3.8 in) |
| 1981 | 41.1 mm (1.6 in) |
| 1982 | 125.7 mm (4.9 in) |
| 1983 | 41.4 mm (1.6 in) |
| 1984 | 54.4 mm (2.1 in) |
| 1985 | 50.8 mm (2.0 in) |
| 1986 | 56.4 mm (2.2 in) |
| 1987 | 77.0 mm (3.0 in) |
| 1988 | 39.9 mm (1.6 in) |
| 1989 | 76.5 mm (3.0 in) |
| 1990 | 53.1 mm (2.1 in) |
| 1991 | 101.1 mm (4.0 in) |
| 1992 | 55.5 mm (2.2 in) |
| 1993 | 96.5 mm (3.8 in) |
| 1994 | 83.4 mm (3.3 in) |
| 1995 | 107.5 mm (4.2 in) |
| 1996 | 54.1 mm (2.1 in) |
| 1997 | 63.5 mm (2.5 in) |
| 1998 | 63.5 mm (2.5 in) |
| 1999 | 86.9 mm (3.4 in) |
| 2000 | 52.1 mm (2.1 in) |
| 2001 | 83.3 mm (3.3 in) |
| 2002 | 36.1 mm (1.4 in) |
| 2003 | 72.6 mm (2.9 in) |
| 2004 | 50.3 mm (2.0 in) |
| 2005 | 76.8 mm (3.0 in) |
| 2006 | 53.3 mm (2.1 in) |
| 2007 | 106.9 mm (4.2 in) |
| 2008 | 55.0 mm (2.2 in) |
| 2009 | 69.8 mm (2.7 in) |
| 2010 | 68.6 mm (2.7 in) |
| 2011 | 67.6 mm (2.7 in) |
| 2012 | 64.8 mm (2.6 in) |
| 2013 | 73.4 mm (2.9 in) |
| 2014 | 141.7 mm (5.6 in) |
| 2015 | 73.9 mm (2.9 in) |
| 2016 | 101.6 mm (4.0 in) |
| 2017 | 86.9 mm (3.4 in) |
| 2018 | 58.2 mm (2.3 in) |
| 2019 | 60.2 mm (2.4 in) |
| 2020 | 42.2 mm (1.7 in) |
| 2021 | 86.6 mm (3.4 in) |
| 2022 | 73.9 mm (2.9 in) |
| 2023 | 91.9 mm (3.6 in) |
| 2024 | 94.2 mm (3.7 in) |
| 2025 | 87.0 mm (3.4 in) |
| 2026 | 94.7 mm (3.7 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1893 | 35 days |
| 1894 | 27 days |
| 1895 | 25 days |
| 1896 | 20 days |
| 1897 | 18 days |
| 1898 | 23 days |
| 1899 | 22 days |
| 1900 | 25 days |
| 1901 | 25 days |
| 1902 | 40 days |
| 1903 | 42 days |
| 1904 | 45 days |
| 1905 | 33 days |
| 1906 | 26 days |
| 1907 | 37 days |
| 1908 | 29 days |
| 1909 | 33 days |
| 1910 | 40 days |
| 1911 | 42 days |
| 1912 | 35 days |
| 1913 | 28 days |
| 1914 | 24 days |
| 1915 | 29 days |
| 1916 | 29 days |
| 1917 | 28 days |
| 1918 | 37 days |
| 1919 | 26 days |
| 1920 | 40 days |
| 1921 | 28 days |
| 1922 | 31 days |
| 1923 | 34 days |
| 1924 | 48 days |
| 1925 | 34 days |
| 1926 | 27 days |
| 1927 | 17 days |
| 1928 | 31 days |
| 1929 | 18 days |
| 1930 | 33 days |
| 1931 | 20 days |
| 1932 | 26 days |
| 1933 | 22 days |
| 1934 | 52 days |
| 1935 | 35 days |
| 1936 | 40 days |
| 1937 | 30 days |
| 1938 | 37 days |
| 1939 | 51 days |
| 1940 | 31 days |
| 1941 | 32 days |
| 1942 | 35 days |
| 1943 | 52 days |
| 1944 | 33 days |
| 1945 | 30 days |
| 1946 | 35 days |
| 1947 | 47 days |
| 1948 | 27 days |
| 1949 | 26 days |
| 1950 | 32 days |
| 1951 | 36 days |
| 1952 | 80 days |
| 1953 | 25 days |
| 1954 | 46 days |
| 1955 | 38 days |
| 1956 | 28 days |
| 1957 | 37 days |
| 1958 | 23 days |
| 1959 | 42 days |
| 1960 | 30 days |
| 1961 | 52 days |
| 1962 | 29 days |
| 1963 | 46 days |
| 1964 | 43 days |
| 1965 | 37 days |
| 1966 | 33 days |
| 1967 | 48 days |
| 1968 | 39 days |
| 1969 | 40 days |
| 1970 | 27 days |
| 1971 | 38 days |
| 1972 | 27 days |
| 1973 | 39 days |
| 1974 | 31 days |
| 1975 | 37 days |
| 1976 | 33 days |
| 1977 | 26 days |
| 1978 | 26 days |
| 1979 | 45 days |
| 1980 | 31 days |
| 1981 | 30 days |
| 1982 | 22 days |
| 1983 | 25 days |
| 1984 | 33 days |
| 1985 | 16 days |
| 1986 | 31 days |
| 1987 | 38 days |
| 1988 | 50 days |
| 1989 | 39 days |
| 1990 | 43 days |
| 1991 | 43 days |
| 1992 | 25 days |
| 1993 | 19 days |
| 1994 | 25 days |
| 1995 | 36 days |
| 1996 | 18 days |
| 1997 | 27 days |
| 1998 | 40 days |
| 1999 | 56 days |
| 2000 | 27 days |
| 2001 | 35 days |
| 2002 | 49 days |
| 2003 | 17 days |
| 2004 | 34 days |
| 2005 | 28 days |
| 2006 | 72 days |
| 2007 | 20 days |
| 2008 | 34 days |
| 2009 | 32 days |
| 2010 | 27 days |
| 2011 | 33 days |
| 2012 | 31 days |
| 2013 | 39 days |
| 2014 | 24 days |
| 2015 | 24 days |
| 2016 | 32 days |
| 2017 | 38 days |
| 2018 | 26 days |
| 2019 | 18 days |
| 2020 | 59 days |
| 2021 | 25 days |
| 2022 | 21 days |
| 2023 | 32 days |
| 2024 | 29 days |
| 2025 | 34 days |
| 2026 | 45 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
120 years with a frostAcross 120 years with a frost, the median last spring frost at Napoleon falls on 19 May and the median first autumn frost on 19 September, which leaves a median of 121 days between them.
In 1991 to 2024 the median growing season was 136 days. That is 35 days more than in 1893 to 1922.
Fitted over all years, the growing season changes by +4.1 days per decade at this station.
| Measure | Median, all years | Earliest period (1893 to 1922) | Recent period (1991 to 2024) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 19 May | 28 May | 15 May | 13 days earlier | -1.7 days per decade |
| First autumn frost | 19 September | 10 September | 28 September | 18 days later | +2.4 days per decade |
| Growing days | 121 days | 101 days | 136 days | 35 days more | +4.1 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
128 years, 1893 to 2022A day with at least 43.8 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 119.5 mm (4.7 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 43.8 mm (1.7 in) | |
| 5 years | 61.2 mm (2.4 in) | |
| 10 years | 73.7 mm (2.9 in) | |
| 25 years | 91.0 mm (3.6 in) | |
| 50 years | 104.8 mm (4.1 in) | |
| 100 years | 119.5 mm (4.7 in) |
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 128 years of values from 1893 to 2022.
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: 135.1 mm (5.3 in) in 2014; 106.7 mm (4.2 in) in 1932; 104.1 mm (4.1 in) in 1977.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Climate Twins
2006 to 2024 against 1961 to 1990Over 2006 to 2024, Napoleon had a mean temperature of 5.0 C (41.0 F) and 525.4 mm (20.7 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Hebron (United States, 178 km away), Summit 1 W (United States, 249 km away) and Wilton (United States, 106 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Hebron | United States | 178 km (111 mi) | 4.9 C (40.8 F) | 406.7 mm (16.0 in) | 0.95 |
| Summit 1 W | United States | 249 km (155 mi) | 5.2 C (41.3 F) | 541.0 mm (21.3 in) | 0.96 |
| Wilton | United States | 106 km (66 mi) | 4.5 C (40.1 F) | 444.3 mm (17.5 in) | 0.97 |
Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.
Download the Data
Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-14 (14 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-14).