American Falls 6 NE Weather Records (USC00100227)
Record envelope, standing records and threshold days for American Falls 6 NE (USC00100227), Idaho, United States, with 117 years of record.
Key Facts for American Falls 6 NE
- American Falls 6 NE (USC00100227) is a weather station in Idaho, United States at 42.86 latitude and -112.88 longitude, 1,346 m (4,415 ft) above sea level.
- The station reports from 1892 to 2008, 117 years of record.
- 1,464 records set at American Falls 6 NE still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- American Falls 6 NE set a daily record precipitation of 21.6 mm (0.9 in) on 2 November 2008.
About the Station
- Location: Idaho, United States, 42.86 latitude, -112.88 longitude.
- Elevation: 1,346 m (4,415 ft).
- Period of record: 1892 to 2008, 117 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
0 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 15.0 C (59.0 F) | -38.9 C (-38.0 F) | n/a | n/a |
| Feb | 20.6 C (69.1 F) | -34.4 C (-29.9 F) | n/a | n/a |
| Mar | 25.6 C (78.1 F) | -25.6 C (-14.1 F) | n/a | n/a |
| Apr | 30.6 C (87.1 F) | -14.4 C (6.1 F) | n/a | n/a |
| May | 37.2 C (99.0 F) | -10.6 C (12.9 F) | n/a | n/a |
| Jun | 39.4 C (102.9 F) | -7.2 C (19.0 F) | n/a | n/a |
| Jul | 41.1 C (106.0 F) | -5.0 C (23.0 F) | n/a | n/a |
| Aug | 41.1 C (106.0 F) | -3.3 C (26.1 F) | n/a | n/a |
| Sep | 37.8 C (100.0 F) | -8.9 C (16.0 F) | n/a | n/a |
| Oct | 30.6 C (87.1 F) | -14.4 C (6.1 F) | n/a | n/a |
| Nov | 29.4 C (84.9 F) | -30.6 C (-23.1 F) | n/a | n/a |
| Dec | 16.7 C (62.1 F) | -32.2 C (-26.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1893 | 27 |
| 1894 | 17 |
| 1895 | 18 |
| 1896 | 23 |
| 1897 | 20 |
| 1898 | 15 |
| 1899 | 40 |
| 1900 | 25 |
| 1901 | 30 |
| 1902 | 21 |
| 1903 | 22 |
| 1904 | 22 |
| 1905 | 26 |
| 1906 | 26 |
| 1907 | 25 |
| 1908 | 27 |
| 1909 | 5 |
| 1910 | 5 |
| 1911 | 52 |
| 1912 | 22 |
| 1913 | 14 |
| 1914 | 9 |
| 1915 | 14 |
| 1916 | 18 |
| 1917 | 34 |
| 1918 | 25 |
| 1919 | 44 |
| 1920 | 13 |
| 1921 | 8 |
| 1922 | 12 |
| 1923 | 8 |
| 1924 | 17 |
| 1925 | 13 |
| 1926 | 2 |
| 1933 | 8 |
| 1934 | 22 |
| 1935 | 4 |
| 1936 | 17 |
| 1937 | 18 |
| 1938 | 5 |
| 1939 | 15 |
| 1940 | 7 |
| 1941 | 12 |
| 1942 | 15 |
| 1943 | 6 |
| 1944 | 5 |
| 1945 | 10 |
| 1946 | 6 |
| 1947 | 16 |
| 1948 | 7 |
| 1949 | 18 |
| 1950 | 20 |
| 1951 | 8 |
| 1952 | 4 |
| 1953 | 11 |
| 1954 | 11 |
| 1955 | 15 |
| 1956 | 4 |
| 1957 | 5 |
| 1958 | 12 |
| 1959 | 11 |
| 1960 | 7 |
| 1961 | 7 |
| 1962 | 8 |
| 1963 | 12 |
| 1964 | 14 |
| 1965 | 11 |
| 1966 | 6 |
| 1967 | 5 |
| 1968 | 13 |
| 1969 | 15 |
| 1970 | 8 |
| 1971 | 9 |
| 1972 | 15 |
| 1973 | 4 |
| 1974 | 12 |
| 1975 | 12 |
| 1976 | 2 |
| 1977 | 11 |
| 1978 | 6 |
| 1979 | 9 |
| 1980 | 10 |
| 1981 | 14 |
| 1982 | 8 |
| 1983 | 9 |
| 1984 | 10 |
| 1985 | 18 |
| 1986 | 14 |
| 1987 | 12 |
| 1988 | 15 |
| 1989 | 11 |
| 1990 | 17 |
| 1991 | 12 |
| 1992 | 17 |
| 1993 | 12 |
| 1994 | 7 |
| 1995 | 12 |
| 1996 | 13 |
| 1997 | 5 |
| 1998 | 5 |
| 1999 | 7 |
| 2000 | 6 |
| 2001 | 5 |
| 2002 | 10 |
| 2003 | 13 |
| 2004 | 7 |
| 2005 | 5 |
| 2006 | 4 |
| 2007 | 6 |
| 2008 | 3 |
All-Time Record Progression
5 new records| Date | Kind | Detail |
|---|---|---|
| 1937-01-21 | Record low maximum temperature | Record low maximum temperature -22.2 C (-8.0 F) |
| 1937-01-21 | Record low minimum temperature | Record low minimum temperature -36.1 C (-33.0 F) |
| 1949-01-25 | Record low minimum temperature | Record low minimum temperature -38.9 C (-38.0 F) |
| 1949-05-16 | Record daily precipitation | Record daily precipitation 49.0 mm (1.9 in) |
| 1987-05-16 | Record daily precipitation | Record daily precipitation 52.3 mm (2.1 in) |
Wettest Day of Each Month
May: 52.3 mm (2.1 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 32.3 mm (1.3 in) | 6 January 1909 |
| Feb | 25.4 mm (1.0 in) | 6 February 1925 |
| Mar | 43.2 mm (1.7 in) | 23 March 1916 |
| Apr | 46.7 mm (1.8 in) | 21 April 1900 |
| May | 52.3 mm (2.1 in) | 16 May 1987 |
| Jun | 45.7 mm (1.8 in) | 20 June 1918 |
| Jul | 45.7 mm (1.8 in) | 12 July 1898 |
| Aug | 33.5 mm (1.3 in) | 3 August 1936 |
| Sep | 30.0 mm (1.2 in) | 7 September 1906 |
| Oct | 30.7 mm (1.2 in) | 24 October 1974 |
| Nov | 27.9 mm (1.1 in) | 14 November 1971 |
| Dec | 34.0 mm (1.3 in) | 23 December 1964 |
Period of Record Coverage
1892 to 2008| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1892 | 28 | 8% | No |
| 1893 | 300 | 82% | No |
| 1894 | 361 | 99% | Yes |
| 1895 | 362 | 99% | Yes |
| 1896 | 332 | 91% | Yes |
| 1897 | 269 | 74% | No |
| 1898 | 337 | 92% | Yes |
| 1899 | 362 | 99% | Yes |
| 1900 | 303 | 83% | No |
| 1901 | 362 | 99% | Yes |
| 1902 | 333 | 91% | Yes |
| 1903 | 362 | 99% | Yes |
| 1904 | 364 | 99% | Yes |
| 1905 | 348 | 95% | Yes |
| 1906 | 363 | 99% | Yes |
| 1907 | 363 | 99% | Yes |
| 1908 | 365 | 100% | Yes |
| 1909 | 179 | 49% | No |
| 1910 | 91 | 25% | No |
| 1911 | 358 | 98% | Yes |
| 1912 | 364 | 99% | Yes |
| 1913 | 328 | 90% | No |
| 1914 | 212 | 58% | No |
| 1915 | 254 | 70% | No |
| 1916 | 347 | 95% | Yes |
| 1917 | 302 | 83% | No |
| 1918 | 352 | 96% | Yes |
| 1919 | 352 | 96% | Yes |
| 1920 | 358 | 98% | Yes |
| 1921 | 196 | 54% | No |
| 1922 | 302 | 83% | No |
| 1923 | 363 | 99% | Yes |
| 1924 | 364 | 99% | Yes |
| 1925 | 292 | 80% | No |
| 1926 | 36 | 10% | No |
| 1933 | 141 | 39% | No |
| 1934 | 119 | 33% | No |
| 1935 | 256 | 70% | No |
| 1936 | 365 | 100% | Yes |
| 1937 | 365 | 100% | Yes |
| 1938 | 365 | 100% | Yes |
| 1939 | 364 | 100% | Yes |
| 1940 | 366 | 100% | Yes |
| 1941 | 365 | 100% | Yes |
| 1942 | 365 | 100% | Yes |
| 1943 | 365 | 100% | Yes |
| 1944 | 366 | 100% | Yes |
| 1945 | 365 | 100% | Yes |
| 1946 | 362 | 99% | Yes |
| 1947 | 364 | 100% | Yes |
| 1948 | 365 | 100% | Yes |
| 1949 | 364 | 100% | Yes |
| 1950 | 365 | 100% | Yes |
| 1951 | 365 | 100% | Yes |
| 1952 | 366 | 100% | Yes |
| 1953 | 365 | 100% | Yes |
| 1954 | 332 | 91% | Yes |
| 1955 | 362 | 99% | Yes |
| 1956 | 361 | 99% | Yes |
| 1957 | 365 | 100% | Yes |
| 1958 | 362 | 99% | Yes |
| 1959 | 363 | 99% | Yes |
| 1960 | 364 | 99% | Yes |
| 1961 | 363 | 99% | Yes |
| 1962 | 365 | 100% | Yes |
| 1963 | 363 | 99% | Yes |
| 1964 | 364 | 99% | Yes |
| 1965 | 364 | 100% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 304 | 83% | No |
| 1974 | 365 | 100% | Yes |
| 1975 | 364 | 100% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 365 | 100% | Yes |
| 1978 | 342 | 94% | Yes |
| 1979 | 364 | 100% | Yes |
| 1980 | 364 | 99% | Yes |
| 1981 | 362 | 99% | Yes |
| 1982 | 358 | 98% | Yes |
| 1983 | 363 | 99% | Yes |
| 1984 | 359 | 98% | Yes |
| 1985 | 365 | 100% | Yes |
| 1986 | 364 | 100% | Yes |
| 1987 | 363 | 99% | Yes |
| 1988 | 366 | 100% | Yes |
| 1989 | 364 | 100% | Yes |
| 1990 | 364 | 100% | Yes |
| 1991 | 364 | 100% | Yes |
| 1992 | 365 | 100% | Yes |
| 1993 | 365 | 100% | Yes |
| 1994 | 229 | 63% | No |
| 1995 | 285 | 78% | No |
| 1996 | 339 | 93% | Yes |
| 1997 | 326 | 89% | No |
| 1998 | 312 | 85% | No |
| 1999 | 289 | 79% | No |
| 2000 | 285 | 78% | No |
| 2001 | 285 | 78% | No |
| 2002 | 293 | 80% | No |
| 2003 | 336 | 92% | Yes |
| 2004 | 361 | 99% | Yes |
| 2005 | 363 | 99% | Yes |
| 2006 | 365 | 100% | Yes |
| 2007 | 344 | 94% | Yes |
| 2008 | 318 | 87% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 2 November 2008 | American Falls 6 NE, US | daily rain | 21.6 mm (0.9 in) | 7.1 mm (0.28 in) | 60 years | 20 of 100 (Routine) |
| 12 October 2008 | American Falls 6 NE, US | daily snowfall | 10.2 cm (4.0 in) | 10.2 cm (4.0 in) | 108 years | 55 of 100 (Notable) |
| 12 October 2008 | American Falls 6 NE, US | daily snow depth | 10.2 cm (4.0 in) | 10.2 cm (4.0 in) | 60 years | 38 of 100 (Notable) |
| 12 October 2008 | American Falls 6 NE, US | daily low max | 2.8 C (37.0 F) | 3.9 C (7.0 F) | 39 years | 28 of 100 (Routine) |
| 11 October 2008 | American Falls 6 NE, US | daily snowfall | 5.1 cm (2.0 in) | 2.6 cm (1.0 in) | 11 years | 16 of 100 (Routine) |
| 10 October 2008 | American Falls 6 NE, US | daily low max (Tie) | 8.9 C (48.0 F) | tie | 95 years | 9 of 100 (Routine) |
| 31 August 2008 | American Falls 6 NE, US | daily rain | 11.4 mm (0.4 in) | 1.0 mm (0.04 in) | 45 years | 20 of 100 (Routine) |
| 22 May 2008 | American Falls 6 NE, US | daily low max (Tie) | 10.6 C (51.1 F) | tie | 10 years | 3 of 100 (Routine) |
| 1 May 2008 | American Falls 6 NE, US | daily snowfall | 10.9 cm (4.3 in) | 10.9 cm (4.3 in) | 114 years | 61 of 100 (Major) |
| 21 April 2008 | American Falls 6 NE, US | daily low min | -8.9 C (16.0 F) | 0.6 C (1.1 F) | 89 years | 37 of 100 (Notable) |
| 14 April 2008 | American Falls 6 NE, US | daily high min | 11.1 C (52.0 F) | 1.7 C (3.1 F) | 6 years | 15 of 100 (Routine) |
| 10 December 2007 | American Falls 6 NE, US | daily snowfall | 4.1 cm (1.6 in) | 1.3 cm (0.5 in) | 4 years | 14 of 100 (Routine) |
| 19 November 2007 | American Falls 6 NE, US | daily high max (Tie) | 17.8 C (64.0 F) | tie | 107 years | 10 of 100 (Routine) |
| 6 October 2007 | American Falls 6 NE, US | daily low max | 6.7 C (44.1 F) | 1.1 C (2.0 F) | 93 years | 39 of 100 (Notable) |
| 2 October 2007 | American Falls 6 NE, US | daily snowfall | 5.1 cm (2.0 in) | 5.1 cm (2.0 in) | 107 years | 47 of 100 (Notable) |
| 6 June 2007 | American Falls 6 NE, US | daily rain | 16.3 mm (0.6 in) | 0.6 mm (0.02 in) | 40 years | 20 of 100 (Routine) |
| 22 May 2007 | American Falls 6 NE, US | daily low max (Tie) | 10.6 C (51.1 F) | tie | 8 years | 3 of 100 (Routine) |
| 18 April 2007 | American Falls 6 NE, US | daily snowfall | 7.6 cm (3.0 in) | 2.5 cm (1.0 in) | 44 years | 29 of 100 (Routine) |
| 27 March 2007 | American Falls 6 NE, US | daily snowfall | 1.5 cm (0.6 in) | 0.7 cm (0.3 in) | 4 years | 12 of 100 (Routine) |
| 26 March 2007 | American Falls 6 NE, US | daily high max (Tie) | 20.0 C (68.0 F) | tie | 46 years | 6 of 100 (Routine) |
Climate Trend
78 complete years, 1894 to 2006| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1894 | 7.7 C | -0.66 C |
| 1895 | 7.3 C | -1.09 C |
| 1899 | 8.5 C | +0.14 C |
| 1901 | 8.6 C | +0.23 C |
| 1903 | 7.1 C | -1.32 C |
| 1904 | 8.2 C | -0.16 C |
| 1906 | 8.0 C | -0.43 C |
| 1907 | 8.0 C | -0.43 C |
| 1908 | 7.5 C | -0.87 C |
| 1918 | 8.1 C | -0.31 C |
| 1919 | 6.9 C | -1.51 C |
| 1920 | 7.6 C | -0.82 C |
| 1923 | 7.9 C | -0.45 C |
| 1924 | 8.1 C | -0.34 C |
| 1936 | 8.6 C | +0.22 C |
| 1937 | 7.8 C | -0.58 C |
| 1938 | 8.9 C | +0.47 C |
| 1939 | 8.9 C | +0.51 C |
| 1940 | 9.4 C | +0.96 C |
| 1941 | 8.1 C | -0.33 C |
| 1942 | 7.3 C | -1.11 C |
| 1943 | 8.9 C | +0.53 C |
| 1944 | 7.0 C | -1.36 C |
| 1945 | 8.2 C | -0.24 C |
| 1946 | 8.7 C | +0.34 C |
| 1947 | 8.9 C | +0.51 C |
| 1948 | 8.0 C | -0.35 C |
| 1949 | 7.7 C | -0.74 C |
| 1950 | 8.0 C | -0.35 C |
| 1951 | 7.9 C | -0.54 C |
| 1952 | 7.4 C | -0.98 C |
| 1953 | 9.1 C | +0.75 C |
| 1955 | 7.5 C | -0.86 C |
| 1956 | 8.3 C | -0.09 C |
| 1957 | 8.5 C | +0.06 C |
| 1958 | 9.6 C | +1.21 C |
| 1959 | 8.9 C | +0.51 C |
| 1960 | 8.3 C | -0.12 C |
| 1961 | 9.2 C | +0.79 C |
| 1962 | 8.3 C | -0.10 C |
| 1963 | 8.9 C | +0.49 C |
| 1964 | 7.3 C | -1.11 C |
| 1965 | 8.7 C | +0.34 C |
| 1966 | 9.0 C | +0.56 C |
| 1967 | 9.3 C | +0.86 C |
| 1968 | 8.2 C | -0.21 C |
| 1969 | 8.6 C | +0.17 C |
| 1970 | 8.4 C | +0.04 C |
| 1971 | 8.1 C | -0.32 C |
| 1972 | 8.3 C | -0.13 C |
| 1974 | 8.6 C | +0.24 C |
| 1975 | 8.0 C | -0.41 C |
| 1976 | 8.0 C | -0.44 C |
| 1977 | 8.4 C | -0.01 C |
| 1979 | 9.3 C | +0.89 C |
| 1980 | 9.6 C | +1.17 C |
| 1981 | 10.4 C | +1.99 C |
| 1982 | 8.4 C | +0.02 C |
| 1983 | 9.5 C | +1.09 C |
| 1984 | 7.5 C | -0.85 C |
| 1985 | 6.5 C | -1.94 C |
| 1986 | 9.5 C | +1.08 C |
| 1987 | 9.6 C | +1.25 C |
| 1988 | 9.8 C | +1.41 C |
| 1989 | 8.8 C | +0.45 C |
| 1990 | 9.5 C | +1.06 C |
| 1991 | 9.1 C | +0.75 C |
| 1992 | 10.0 C | +1.63 C |
| 1993 | 7.1 C | -1.34 C |
| 1996 | 8.8 C | +0.37 C |
| 1997 | 8.0 C | -0.35 C |
| 1998 | 9.0 C | +0.62 C |
| 1999 | 8.6 C | +0.24 C |
| 2002 | 7.5 C | -0.85 C |
| 2003 | 9.7 C | +1.30 C |
| 2004 | 8.1 C | -0.33 C |
| 2005 | 7.8 C | -0.63 C |
| 2006 | 8.3 C | -0.08 C |
The annual mean temperature here has risen by 0.09 C (0.04 to 0.15) per decade over 1894 to 2006. In Fahrenheit: 0.2 F (0.1 to 0.3) per decade. The slope is a straight line fitted to 78 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.09 C (0.04 to 0.15) per decade | 0.2 F (0.1 to 0.3) per decade | 1894 to 2006 | 78 | Rise |
| Mean daily maximum | -0.04 C (-0.10 to 0.03) per decade | -0.07 F (-0.19 to 0.05) per decade | 1894 to 2006 | 78 | 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 | 1894 to 2006 | 78 | 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
1892 to 2008| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 41.1 C (106.0 F) | 1893 | 36.7 C (98.1 F) | 111 |
| Coldest night (TNn) | -38.9 C (-38.0 F) | 1949 | -23.9 C (-11.0 F) | 111 |
| Wettest day (Rx1day) | 52.3 mm (2.1 in) | 1987 | 24.9 mm (1.0 in) | 111 |
| Wettest five days (Rx5day) | 81.2 mm (3.2 in) | 1949 | 37.7 mm (1.5 in) | 111 |
| Longest dry spell (CDD) | 113 days | 1917 | 40 days | 111 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1892 | 8.3 C (46.9 F) |
| 1893 | 41.1 C (106.0 F) |
| 1894 | 37.8 C (100.0 F) |
| 1895 | 37.2 C (99.0 F) |
| 1896 | 38.9 C (102.0 F) |
| 1897 | 39.4 C (102.9 F) |
| 1898 | 38.9 C (102.0 F) |
| 1899 | 39.4 C (102.9 F) |
| 1900 | 40.0 C (104.0 F) |
| 1901 | 39.4 C (102.9 F) |
| 1902 | 36.7 C (98.1 F) |
| 1903 | 37.2 C (99.0 F) |
| 1904 | 37.2 C (99.0 F) |
| 1905 | 37.2 C (99.0 F) |
| 1906 | 37.8 C (100.0 F) |
| 1907 | 35.0 C (95.0 F) |
| 1908 | 37.2 C (99.0 F) |
| 1909 | 29.4 C (84.9 F) |
| 1910 | 37.2 C (99.0 F) |
| 1911 | 35.6 C (96.1 F) |
| 1912 | 37.2 C (99.0 F) |
| 1913 | 36.7 C (98.1 F) |
| 1914 | 36.7 C (98.1 F) |
| 1915 | 39.4 C (102.9 F) |
| 1916 | 37.8 C (100.0 F) |
| 1917 | 38.9 C (102.0 F) |
| 1918 | 39.4 C (102.9 F) |
| 1919 | 40.0 C (104.0 F) |
| 1920 | 37.8 C (100.0 F) |
| 1921 | 37.8 C (100.0 F) |
| 1922 | 38.3 C (100.9 F) |
| 1923 | 38.3 C (100.9 F) |
| 1924 | 39.4 C (102.9 F) |
| 1925 | 41.1 C (106.0 F) |
| 1926 | 14.4 C (57.9 F) |
| 1933 | 34.4 C (93.9 F) |
| 1934 | 26.7 C (80.1 F) |
| 1935 | 37.8 C (100.0 F) |
| 1936 | 36.1 C (97.0 F) |
| 1937 | 36.7 C (98.1 F) |
| 1938 | 35.0 C (95.0 F) |
| 1939 | 37.8 C (100.0 F) |
| 1940 | 37.8 C (100.0 F) |
| 1941 | 34.4 C (93.9 F) |
| 1942 | 36.7 C (98.1 F) |
| 1943 | 36.7 C (98.1 F) |
| 1944 | 35.0 C (95.0 F) |
| 1945 | 36.1 C (97.0 F) |
| 1946 | 37.8 C (100.0 F) |
| 1947 | 36.1 C (97.0 F) |
| 1948 | 35.6 C (96.1 F) |
| 1949 | 36.7 C (98.1 F) |
| 1950 | 34.4 C (93.9 F) |
| 1951 | 37.2 C (99.0 F) |
| 1952 | 33.9 C (93.0 F) |
| 1953 | 35.0 C (95.0 F) |
| 1954 | 37.2 C (99.0 F) |
| 1955 | 35.6 C (96.1 F) |
| 1956 | 37.8 C (100.0 F) |
| 1957 | 35.0 C (95.0 F) |
| 1958 | 35.0 C (95.0 F) |
| 1959 | 35.6 C (96.1 F) |
| 1960 | 37.2 C (99.0 F) |
| 1961 | 36.1 C (97.0 F) |
| 1962 | 34.4 C (93.9 F) |
| 1963 | 36.1 C (97.0 F) |
| 1964 | 35.0 C (95.0 F) |
| 1965 | 33.9 C (93.0 F) |
| 1966 | 35.6 C (96.1 F) |
| 1967 | 35.6 C (96.1 F) |
| 1968 | 35.6 C (96.1 F) |
| 1969 | 36.1 C (97.0 F) |
| 1970 | 35.6 C (96.1 F) |
| 1971 | 35.0 C (95.0 F) |
| 1972 | 35.0 C (95.0 F) |
| 1973 | 35.0 C (95.0 F) |
| 1974 | 38.3 C (100.9 F) |
| 1975 | 38.9 C (102.0 F) |
| 1976 | 37.8 C (100.0 F) |
| 1977 | 36.7 C (98.1 F) |
| 1978 | 36.7 C (98.1 F) |
| 1979 | 38.3 C (100.9 F) |
| 1980 | 35.6 C (96.1 F) |
| 1981 | 37.8 C (100.0 F) |
| 1982 | 36.1 C (97.0 F) |
| 1983 | 35.0 C (95.0 F) |
| 1984 | 35.6 C (96.1 F) |
| 1985 | 37.2 C (99.0 F) |
| 1986 | 37.2 C (99.0 F) |
| 1987 | 37.2 C (99.0 F) |
| 1988 | 39.4 C (102.9 F) |
| 1989 | 38.3 C (100.9 F) |
| 1990 | 38.9 C (102.0 F) |
| 1991 | 36.1 C (97.0 F) |
| 1992 | 38.9 C (102.0 F) |
| 1993 | 33.9 C (93.0 F) |
| 1994 | 39.4 C (102.9 F) |
| 1995 | 35.0 C (95.0 F) |
| 1996 | 36.1 C (97.0 F) |
| 1997 | 34.4 C (93.9 F) |
| 1998 | 35.6 C (96.1 F) |
| 1999 | 35.6 C (96.1 F) |
| 2000 | 36.7 C (98.1 F) |
| 2001 | 35.0 C (95.0 F) |
| 2002 | 35.0 C (95.0 F) |
| 2003 | 36.1 C (97.0 F) |
| 2004 | 35.0 C (95.0 F) |
| 2005 | 34.4 C (93.9 F) |
| 2006 | 35.6 C (96.1 F) |
| 2007 | 34.4 C (93.9 F) |
| 2008 | 35.6 C (96.1 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1892 | -27.2 C (-17.0 F) |
| 1893 | -32.2 C (-26.0 F) |
| 1894 | -29.4 C (-20.9 F) |
| 1895 | -30.0 C (-22.0 F) |
| 1896 | -30.6 C (-23.1 F) |
| 1897 | -22.8 C (-9.0 F) |
| 1898 | -31.7 C (-25.1 F) |
| 1899 | -29.4 C (-20.9 F) |
| 1900 | -28.3 C (-18.9 F) |
| 1901 | -21.1 C (-6.0 F) |
| 1902 | -32.8 C (-27.0 F) |
| 1903 | -28.9 C (-20.0 F) |
| 1904 | -28.9 C (-20.0 F) |
| 1905 | -33.3 C (-27.9 F) |
| 1906 | -20.6 C (-5.1 F) |
| 1907 | -24.4 C (-11.9 F) |
| 1908 | -30.6 C (-23.1 F) |
| 1909 | -22.2 C (-8.0 F) |
| 1910 | -11.7 C (10.9 F) |
| 1911 | -17.8 C (0.0 F) |
| 1912 | -19.4 C (-2.9 F) |
| 1913 | -26.7 C (-16.1 F) |
| 1914 | -21.7 C (-7.1 F) |
| 1915 | -29.4 C (-20.9 F) |
| 1916 | -24.4 C (-11.9 F) |
| 1917 | -29.4 C (-20.9 F) |
| 1918 | -25.6 C (-14.1 F) |
| 1919 | -29.4 C (-20.9 F) |
| 1920 | -23.3 C (-9.9 F) |
| 1921 | -18.9 C (-2.0 F) |
| 1922 | -31.7 C (-25.1 F) |
| 1923 | -26.1 C (-15.0 F) |
| 1924 | -32.2 C (-26.0 F) |
| 1925 | -20.0 C (-4.0 F) |
| 1926 | -15.0 C (5.0 F) |
| 1933 | -12.2 C (10.0 F) |
| 1934 | -8.9 C (16.0 F) |
| 1935 | -17.2 C (1.0 F) |
| 1936 | -26.1 C (-15.0 F) |
| 1937 | -36.1 C (-33.0 F) |
| 1938 | -16.7 C (1.9 F) |
| 1939 | -18.9 C (-2.0 F) |
| 1940 | -19.4 C (-2.9 F) |
| 1941 | -20.6 C (-5.1 F) |
| 1942 | -30.0 C (-22.0 F) |
| 1943 | -20.6 C (-5.1 F) |
| 1944 | -23.9 C (-11.0 F) |
| 1945 | -23.3 C (-9.9 F) |
| 1946 | -20.0 C (-4.0 F) |
| 1947 | -25.6 C (-14.1 F) |
| 1948 | -22.2 C (-8.0 F) |
| 1949 | -38.9 C (-38.0 F) |
| 1950 | -28.3 C (-18.9 F) |
| 1951 | -25.0 C (-13.0 F) |
| 1952 | -24.4 C (-11.9 F) |
| 1953 | -15.0 C (5.0 F) |
| 1954 | -23.3 C (-9.9 F) |
| 1955 | -23.9 C (-11.0 F) |
| 1956 | -28.9 C (-20.0 F) |
| 1957 | -26.7 C (-16.1 F) |
| 1958 | -18.3 C (-0.9 F) |
| 1959 | -23.9 C (-11.0 F) |
| 1960 | -29.4 C (-20.9 F) |
| 1961 | -18.9 C (-2.0 F) |
| 1962 | -35.0 C (-31.0 F) |
| 1963 | -31.1 C (-24.0 F) |
| 1964 | -26.1 C (-15.0 F) |
| 1965 | -18.9 C (-2.0 F) |
| 1966 | -18.9 C (-2.0 F) |
| 1967 | -18.3 C (-0.9 F) |
| 1968 | -20.6 C (-5.1 F) |
| 1969 | -19.4 C (-2.9 F) |
| 1970 | -20.6 C (-5.1 F) |
| 1971 | -20.0 C (-4.0 F) |
| 1972 | -29.4 C (-20.9 F) |
| 1973 | -26.7 C (-16.1 F) |
| 1974 | -27.2 C (-17.0 F) |
| 1975 | -24.4 C (-11.9 F) |
| 1976 | -24.4 C (-11.9 F) |
| 1977 | -23.3 C (-9.9 F) |
| 1978 | -22.8 C (-9.0 F) |
| 1979 | -32.8 C (-27.0 F) |
| 1980 | -21.7 C (-7.1 F) |
| 1981 | -18.3 C (-0.9 F) |
| 1982 | -26.1 C (-15.0 F) |
| 1983 | -28.9 C (-20.0 F) |
| 1984 | -33.3 C (-27.9 F) |
| 1985 | -34.4 C (-29.9 F) |
| 1986 | -18.9 C (-2.0 F) |
| 1987 | -22.8 C (-9.0 F) |
| 1988 | -21.7 C (-7.1 F) |
| 1989 | -25.0 C (-13.0 F) |
| 1990 | -30.6 C (-23.1 F) |
| 1991 | -20.0 C (-4.0 F) |
| 1992 | -28.9 C (-20.0 F) |
| 1993 | -26.1 C (-15.0 F) |
| 1994 | -17.8 C (0.0 F) |
| 1995 | -16.1 C (3.0 F) |
| 1996 | -25.6 C (-14.1 F) |
| 1997 | -17.8 C (0.0 F) |
| 1998 | -26.1 C (-15.0 F) |
| 1999 | -18.3 C (-0.9 F) |
| 2000 | -13.9 C (7.0 F) |
| 2001 | -22.8 C (-9.0 F) |
| 2002 | -22.8 C (-9.0 F) |
| 2003 | -16.7 C (1.9 F) |
| 2004 | -25.0 C (-13.0 F) |
| 2005 | -26.7 C (-16.1 F) |
| 2006 | -22.2 C (-8.0 F) |
| 2007 | -20.6 C (-5.1 F) |
| 2008 | -22.8 C (-9.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1892 | 11.9 mm (0.5 in) |
| 1893 | 19.3 mm (0.8 in) |
| 1894 | 20.3 mm (0.8 in) |
| 1895 | 22.9 mm (0.9 in) |
| 1896 | 30.5 mm (1.2 in) |
| 1897 | 19.1 mm (0.8 in) |
| 1898 | 45.7 mm (1.8 in) |
| 1899 | 17.8 mm (0.7 in) |
| 1900 | 46.7 mm (1.8 in) |
| 1901 | 26.4 mm (1.0 in) |
| 1902 | 25.4 mm (1.0 in) |
| 1903 | 25.4 mm (1.0 in) |
| 1904 | 29.2 mm (1.1 in) |
| 1905 | 17.8 mm (0.7 in) |
| 1906 | 30.0 mm (1.2 in) |
| 1907 | 31.8 mm (1.3 in) |
| 1908 | 15.2 mm (0.6 in) |
| 1909 | 32.3 mm (1.3 in) |
| 1910 | 15.7 mm (0.6 in) |
| 1911 | 30.5 mm (1.2 in) |
| 1912 | 28.4 mm (1.1 in) |
| 1913 | 35.6 mm (1.4 in) |
| 1914 | 16.8 mm (0.7 in) |
| 1915 | 25.4 mm (1.0 in) |
| 1916 | 43.2 mm (1.7 in) |
| 1917 | 30.5 mm (1.2 in) |
| 1918 | 45.7 mm (1.8 in) |
| 1919 | 26.2 mm (1.0 in) |
| 1920 | 25.7 mm (1.0 in) |
| 1921 | 23.1 mm (0.9 in) |
| 1922 | 25.1 mm (1.0 in) |
| 1923 | 38.1 mm (1.5 in) |
| 1924 | 25.4 mm (1.0 in) |
| 1925 | 25.4 mm (1.0 in) |
| 1926 | 10.2 mm (0.4 in) |
| 1933 | 12.2 mm (0.5 in) |
| 1934 | 21.6 mm (0.9 in) |
| 1935 | 18.8 mm (0.7 in) |
| 1936 | 33.5 mm (1.3 in) |
| 1937 | 30.7 mm (1.2 in) |
| 1938 | 26.7 mm (1.1 in) |
| 1939 | 18.8 mm (0.7 in) |
| 1940 | 31.2 mm (1.2 in) |
| 1941 | 21.8 mm (0.9 in) |
| 1942 | 25.7 mm (1.0 in) |
| 1943 | 23.9 mm (0.9 in) |
| 1944 | 26.4 mm (1.0 in) |
| 1945 | 10.9 mm (0.4 in) |
| 1946 | 39.9 mm (1.6 in) |
| 1947 | 35.6 mm (1.4 in) |
| 1948 | 22.4 mm (0.9 in) |
| 1949 | 49.0 mm (1.9 in) |
| 1950 | 20.6 mm (0.8 in) |
| 1951 | 17.0 mm (0.7 in) |
| 1952 | 13.0 mm (0.5 in) |
| 1953 | 25.7 mm (1.0 in) |
| 1954 | 12.4 mm (0.5 in) |
| 1955 | 15.5 mm (0.6 in) |
| 1956 | 19.3 mm (0.8 in) |
| 1957 | 20.3 mm (0.8 in) |
| 1958 | 22.1 mm (0.9 in) |
| 1959 | 17.8 mm (0.7 in) |
| 1960 | 13.5 mm (0.5 in) |
| 1961 | 30.0 mm (1.2 in) |
| 1962 | 18.0 mm (0.7 in) |
| 1963 | 22.9 mm (0.9 in) |
| 1964 | 34.0 mm (1.3 in) |
| 1965 | 23.1 mm (0.9 in) |
| 1966 | 15.2 mm (0.6 in) |
| 1967 | 24.9 mm (1.0 in) |
| 1968 | 31.5 mm (1.2 in) |
| 1969 | 24.9 mm (1.0 in) |
| 1970 | 28.4 mm (1.1 in) |
| 1971 | 27.9 mm (1.1 in) |
| 1972 | 24.6 mm (1.0 in) |
| 1973 | 20.6 mm (0.8 in) |
| 1974 | 30.7 mm (1.2 in) |
| 1975 | 27.2 mm (1.1 in) |
| 1976 | 16.3 mm (0.6 in) |
| 1977 | 19.8 mm (0.8 in) |
| 1978 | 14.7 mm (0.6 in) |
| 1979 | 13.7 mm (0.5 in) |
| 1980 | 29.0 mm (1.1 in) |
| 1981 | 21.8 mm (0.9 in) |
| 1982 | 29.5 mm (1.2 in) |
| 1983 | 27.7 mm (1.1 in) |
| 1984 | 23.1 mm (0.9 in) |
| 1985 | 29.0 mm (1.1 in) |
| 1986 | 25.4 mm (1.0 in) |
| 1987 | 52.3 mm (2.1 in) |
| 1988 | 21.6 mm (0.9 in) |
| 1989 | 27.4 mm (1.1 in) |
| 1990 | 30.0 mm (1.2 in) |
| 1991 | 25.4 mm (1.0 in) |
| 1992 | 15.7 mm (0.6 in) |
| 1993 | 27.9 mm (1.1 in) |
| 1994 | 26.7 mm (1.1 in) |
| 1995 | 35.6 mm (1.4 in) |
| 1996 | 27.9 mm (1.1 in) |
| 1997 | 26.2 mm (1.0 in) |
| 1998 | 14.5 mm (0.6 in) |
| 1999 | 16.5 mm (0.6 in) |
| 2000 | 12.7 mm (0.5 in) |
| 2001 | 16.0 mm (0.6 in) |
| 2002 | 16.3 mm (0.6 in) |
| 2003 | 13.5 mm (0.5 in) |
| 2004 | 13.0 mm (0.5 in) |
| 2005 | 20.6 mm (0.8 in) |
| 2006 | 15.0 mm (0.6 in) |
| 2007 | 16.3 mm (0.6 in) |
| 2008 | 21.6 mm (0.9 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1892 | 27.4 mm (1.1 in) |
| 1893 | 46.2 mm (1.8 in) |
| 1894 | 26.7 mm (1.1 in) |
| 1895 | 28.5 mm (1.1 in) |
| 1896 | 51.1 mm (2.0 in) |
| 1897 | 30.2 mm (1.2 in) |
| 1898 | 50.8 mm (2.0 in) |
| 1899 | 31.3 mm (1.2 in) |
| 1900 | 55.8 mm (2.2 in) |
| 1901 | 47.0 mm (1.9 in) |
| 1902 | 40.8 mm (1.6 in) |
| 1903 | 38.9 mm (1.5 in) |
| 1904 | 50.9 mm (2.0 in) |
| 1905 | 43.4 mm (1.7 in) |
| 1906 | 49.5 mm (1.9 in) |
| 1907 | 66.0 mm (2.6 in) |
| 1908 | 43.2 mm (1.7 in) |
| 1909 | 41.4 mm (1.6 in) |
| 1910 | 15.7 mm (0.6 in) |
| 1911 | 57.2 mm (2.3 in) |
| 1912 | 53.8 mm (2.1 in) |
| 1913 | 51.9 mm (2.0 in) |
| 1914 | 43.7 mm (1.7 in) |
| 1915 | 35.6 mm (1.4 in) |
| 1916 | 61.1 mm (2.4 in) |
| 1917 | 42.9 mm (1.7 in) |
| 1918 | 49.5 mm (1.9 in) |
| 1919 | 37.4 mm (1.5 in) |
| 1920 | 64.0 mm (2.5 in) |
| 1921 | 39.4 mm (1.6 in) |
| 1922 | 25.1 mm (1.0 in) |
| 1923 | 51.6 mm (2.0 in) |
| 1924 | 25.4 mm (1.0 in) |
| 1925 | 49.0 mm (1.9 in) |
| 1926 | 11.2 mm (0.4 in) |
| 1933 | 14.3 mm (0.6 in) |
| 1934 | 30.5 mm (1.2 in) |
| 1935 | 20.9 mm (0.8 in) |
| 1936 | 43.0 mm (1.7 in) |
| 1937 | 37.1 mm (1.5 in) |
| 1938 | 49.3 mm (1.9 in) |
| 1939 | 28.7 mm (1.1 in) |
| 1940 | 38.3 mm (1.5 in) |
| 1941 | 46.9 mm (1.8 in) |
| 1942 | 38.1 mm (1.5 in) |
| 1943 | 30.3 mm (1.2 in) |
| 1944 | 57.9 mm (2.3 in) |
| 1945 | 21.3 mm (0.8 in) |
| 1946 | 41.9 mm (1.6 in) |
| 1947 | 38.9 mm (1.5 in) |
| 1948 | 45.8 mm (1.8 in) |
| 1949 | 81.2 mm (3.2 in) |
| 1950 | 31.8 mm (1.3 in) |
| 1951 | 25.7 mm (1.0 in) |
| 1952 | 26.9 mm (1.1 in) |
| 1953 | 27.0 mm (1.1 in) |
| 1954 | 15.8 mm (0.6 in) |
| 1955 | 24.6 mm (1.0 in) |
| 1956 | 41.4 mm (1.6 in) |
| 1957 | 50.1 mm (2.0 in) |
| 1958 | 31.3 mm (1.2 in) |
| 1959 | 22.3 mm (0.9 in) |
| 1960 | 24.7 mm (1.0 in) |
| 1961 | 40.4 mm (1.6 in) |
| 1962 | 18.0 mm (0.7 in) |
| 1963 | 49.3 mm (1.9 in) |
| 1964 | 70.3 mm (2.8 in) |
| 1965 | 34.0 mm (1.3 in) |
| 1966 | 26.4 mm (1.0 in) |
| 1967 | 29.7 mm (1.2 in) |
| 1968 | 65.0 mm (2.6 in) |
| 1969 | 30.3 mm (1.2 in) |
| 1970 | 30.0 mm (1.2 in) |
| 1971 | 53.1 mm (2.1 in) |
| 1972 | 29.0 mm (1.1 in) |
| 1973 | 22.6 mm (0.9 in) |
| 1974 | 41.7 mm (1.6 in) |
| 1975 | 44.2 mm (1.7 in) |
| 1976 | 25.8 mm (1.0 in) |
| 1977 | 26.4 mm (1.0 in) |
| 1978 | 23.4 mm (0.9 in) |
| 1979 | 21.8 mm (0.9 in) |
| 1980 | 68.6 mm (2.7 in) |
| 1981 | 29.2 mm (1.1 in) |
| 1982 | 43.7 mm (1.7 in) |
| 1983 | 48.0 mm (1.9 in) |
| 1984 | 44.7 mm (1.8 in) |
| 1985 | 45.3 mm (1.8 in) |
| 1986 | 54.6 mm (2.1 in) |
| 1987 | 80.6 mm (3.2 in) |
| 1988 | 29.0 mm (1.1 in) |
| 1989 | 31.8 mm (1.3 in) |
| 1990 | 31.5 mm (1.2 in) |
| 1991 | 49.5 mm (1.9 in) |
| 1992 | 22.6 mm (0.9 in) |
| 1993 | 57.8 mm (2.3 in) |
| 1994 | 27.2 mm (1.1 in) |
| 1995 | 56.7 mm (2.2 in) |
| 1996 | 38.9 mm (1.5 in) |
| 1997 | 31.2 mm (1.2 in) |
| 1998 | 32.4 mm (1.3 in) |
| 1999 | 37.7 mm (1.5 in) |
| 2000 | 21.4 mm (0.8 in) |
| 2001 | 24.6 mm (1.0 in) |
| 2002 | 25.7 mm (1.0 in) |
| 2003 | 25.9 mm (1.0 in) |
| 2004 | 21.9 mm (0.9 in) |
| 2005 | 33.9 mm (1.3 in) |
| 2006 | 43.3 mm (1.7 in) |
| 2007 | 18.8 mm (0.7 in) |
| 2008 | 24.6 mm (1.0 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1892 | 13 days |
| 1893 | 36 days |
| 1894 | 44 days |
| 1895 | 46 days |
| 1896 | 20 days |
| 1897 | 32 days |
| 1898 | 48 days |
| 1899 | 56 days |
| 1900 | 95 days |
| 1901 | 54 days |
| 1902 | 71 days |
| 1903 | 33 days |
| 1904 | 56 days |
| 1905 | 51 days |
| 1906 | 36 days |
| 1907 | 25 days |
| 1908 | 39 days |
| 1909 | 24 days |
| 1910 | 38 days |
| 1911 | 72 days |
| 1912 | 22 days |
| 1913 | 22 days |
| 1914 | 49 days |
| 1915 | 42 days |
| 1916 | 43 days |
| 1917 | 113 days |
| 1918 | 30 days |
| 1919 | 60 days |
| 1920 | 37 days |
| 1921 | 80 days |
| 1922 | 54 days |
| 1923 | 52 days |
| 1924 | 39 days |
| 1925 | 19 days |
| 1926 | 13 days |
| 1933 | 44 days |
| 1934 | 44 days |
| 1935 | 75 days |
| 1936 | 33 days |
| 1937 | 30 days |
| 1938 | 46 days |
| 1939 | 51 days |
| 1940 | 48 days |
| 1941 | 20 days |
| 1942 | 58 days |
| 1943 | 39 days |
| 1944 | 57 days |
| 1945 | 25 days |
| 1946 | 36 days |
| 1947 | 40 days |
| 1948 | 42 days |
| 1949 | 38 days |
| 1950 | 31 days |
| 1951 | 45 days |
| 1952 | 62 days |
| 1953 | 36 days |
| 1954 | 36 days |
| 1955 | 29 days |
| 1956 | 40 days |
| 1957 | 32 days |
| 1958 | 45 days |
| 1959 | 52 days |
| 1960 | 50 days |
| 1961 | 33 days |
| 1962 | 41 days |
| 1963 | 39 days |
| 1964 | 62 days |
| 1965 | 44 days |
| 1966 | 38 days |
| 1967 | 23 days |
| 1968 | 33 days |
| 1969 | 39 days |
| 1970 | 45 days |
| 1971 | 27 days |
| 1972 | 25 days |
| 1973 | 28 days |
| 1974 | 56 days |
| 1975 | 23 days |
| 1976 | 61 days |
| 1977 | 38 days |
| 1978 | 52 days |
| 1979 | 35 days |
| 1980 | 39 days |
| 1981 | 68 days |
| 1982 | 20 days |
| 1983 | 25 days |
| 1984 | 20 days |
| 1985 | 23 days |
| 1986 | 30 days |
| 1987 | 50 days |
| 1988 | 83 days |
| 1989 | 29 days |
| 1990 | 46 days |
| 1991 | 70 days |
| 1992 | 49 days |
| 1993 | 33 days |
| 1994 | 28 days |
| 1995 | 47 days |
| 1996 | 47 days |
| 1997 | 29 days |
| 1998 | 42 days |
| 1999 | 58 days |
| 2000 | 37 days |
| 2001 | 51 days |
| 2002 | 52 days |
| 2003 | 53 days |
| 2004 | 29 days |
| 2005 | 46 days |
| 2006 | 42 days |
| 2007 | 39 days |
| 2008 | 39 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
78 years with a frostAcross 78 years with a frost, the median last spring frost at American Falls 6 NE falls on 17 May and the median first autumn frost on 22 September, which leaves a median of 132 days between them.
In 1971 to 2006 the median growing season was 144 days. That is 25 days more than in 1894 to 1951.
Fitted over all years, the growing season changes by +6.2 days per decade at this station.
| Measure | Median, all years | Earliest period (1894 to 1951) | Recent period (1971 to 2006) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 17 May | 22 May | 9 May | 13 days earlier | -2.3 days per decade |
| First autumn frost | 22 September | 18 September | 29 September | 11 days later | +3.9 days per decade |
| Growing days | 132 days | 119 days | 144 days | 25 days more | +6.2 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
89 years, 1895 to 2008A day with at least 23.4 mm (0.9 in) of rain is expected about once in 2 years. A day with at least 48.6 mm (1.9 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 23.4 mm (0.9 in) | |
| 5 years | 30.8 mm (1.2 in) | |
| 10 years | 35.5 mm (1.4 in) | |
| 25 years | 41.0 mm (1.6 in) | |
| 50 years | 44.9 mm (1.8 in) | |
| 100 years | 48.6 mm (1.9 in) | Longer than the 89 years of record |
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 89 years of values from 1895 to 2008.
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: 52.3 mm (2.1 in) in 1987; 49.0 mm (1.9 in) in 1949; 46.7 mm (1.8 in) in 1900.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2025-12-31).