Gann Valley 4NW Weather Records (USC00393217)
Record envelope, standing records and threshold days for Gann Valley 4NW (USC00393217), South Dakota, United States, with 113 years of record.
Key Facts for Gann Valley 4NW
- Gann Valley 4NW (USC00393217) is a weather station in South Dakota, United States at 44.06 latitude and -99.07 longitude, 524 m (1,720 ft) above sea level.
- The station reports from 1897 to 2009, 113 years of record.
- 1,464 records set at Gann Valley 4NW still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Gann Valley 4NW set a daily record snowfall of 15.2 cm (6.0 in) on 25 April 2009.
About the Station
- Location: South Dakota, United States, 44.06 latitude, -99.07 longitude.
- Elevation: 524 m (1,720 ft).
- Period of record: 1897 to 2009, 113 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 | 18.3 C (64.9 F) | -37.2 C (-35.0 F) | n/a | n/a |
| Feb | 23.9 C (75.0 F) | -42.2 C (-44.0 F) | n/a | n/a |
| Mar | 32.2 C (90.0 F) | -32.8 C (-27.0 F) | n/a | n/a |
| Apr | 36.7 C (98.1 F) | -18.3 C (-0.9 F) | n/a | n/a |
| May | 42.8 C (109.0 F) | -11.7 C (10.9 F) | n/a | n/a |
| Jun | 43.9 C (111.0 F) | -1.7 C (28.9 F) | n/a | n/a |
| Jul | 48.9 C (120.0 F) | 2.8 C (37.0 F) | n/a | n/a |
| Aug | 46.7 C (116.1 F) | 0.0 C (32.0 F) | n/a | n/a |
| Sep | 44.4 C (111.9 F) | -8.9 C (16.0 F) | n/a | n/a |
| Oct | 37.2 C (99.0 F) | -21.7 C (-7.1 F) | n/a | n/a |
| Nov | 28.9 C (84.0 F) | -30.0 C (-22.0 F) | n/a | n/a |
| Dec | 22.8 C (73.0 F) | -37.8 C (-36.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1897 | 3 |
| 1898 | 7 |
| 1899 | 18 |
| 1900 | 7 |
| 1901 | 9 |
| 1902 | 15 |
| 1903 | 11 |
| 1904 | 9 |
| 1905 | 21 |
| 1906 | 8 |
| 1907 | 9 |
| 1908 | 14 |
| 1909 | 12 |
| 1910 | 19 |
| 1911 | 19 |
| 1912 | 4 |
| 1913 | 18 |
| 1916 | 11 |
| 1917 | 17 |
| 1918 | 13 |
| 1919 | 15 |
| 1920 | 9 |
| 1921 | 18 |
| 1922 | 11 |
| 1923 | 10 |
| 1924 | 31 |
| 1925 | 26 |
| 1926 | 22 |
| 1927 | 23 |
| 1928 | 16 |
| 1929 | 12 |
| 1930 | 22 |
| 1931 | 39 |
| 1932 | 14 |
| 1933 | 28 |
| 1934 | 39 |
| 1935 | 24 |
| 1936 | 43 |
| 1937 | 10 |
| 1938 | 7 |
| 1939 | 18 |
| 1940 | 22 |
| 1941 | 8 |
| 1942 | 5 |
| 1943 | 16 |
| 1944 | 9 |
| 1945 | 13 |
| 1946 | 16 |
| 1947 | 14 |
| 1948 | 8 |
| 1949 | 3 |
| 1950 | 10 |
| 1951 | 19 |
| 1952 | 6 |
| 1953 | 14 |
| 1954 | 11 |
| 1955 | 11 |
| 1956 | 9 |
| 1957 | 4 |
| 1958 | 11 |
| 1959 | 12 |
| 1960 | 9 |
| 1961 | 9 |
| 1962 | 18 |
| 1963 | 11 |
| 1964 | 16 |
| 1965 | 15 |
| 1966 | 16 |
| 1967 | 17 |
| 1968 | 8 |
| 1969 | 7 |
| 1970 | 5 |
| 1971 | 8 |
| 1972 | 14 |
| 1973 | 5 |
| 1974 | 13 |
| 1975 | 9 |
| 1976 | 11 |
| 1977 | 7 |
| 1978 | 7 |
| 1979 | 6 |
| 1980 | 12 |
| 1981 | 9 |
| 1982 | 7 |
| 1983 | 9 |
| 1984 | 10 |
| 1985 | 18 |
| 1986 | 8 |
| 1987 | 12 |
| 1988 | 9 |
| 1989 | 22 |
| 1990 | 16 |
| 1991 | 20 |
| 1992 | 23 |
| 1993 | 12 |
| 1994 | 7 |
| 1995 | 10 |
| 1996 | 15 |
| 1997 | 17 |
| 1998 | 15 |
| 1999 | 9 |
| 2000 | 26 |
| 2001 | 4 |
| 2002 | 14 |
| 2003 | 9 |
| 2004 | 8 |
| 2005 | 13 |
| 2006 | 8 |
| 2007 | 5 |
| 2008 | 1 |
| 2009 | 3 |
All-Time Record Progression
13 new records| Date | Kind | Detail |
|---|---|---|
| 1931-06-28 | Record high maximum temperature | Record high maximum temperature 43.9 C (111.0 F) |
| 1931-09-09 | Record high maximum temperature | Record high maximum temperature 44.4 C (111.9 F) |
| 1933-07-27 | Record high maximum temperature | Record high maximum temperature 45.6 C (114.1 F) |
| 1933-07-29 | Record high maximum temperature | Record high maximum temperature 46.1 C (115.0 F) |
| 1936-07-05 | Record high maximum temperature | Record high maximum temperature 48.9 C (120.0 F) |
| 1940-07-20 | Record high minimum temperature | Record high minimum temperature 27.8 C (82.0 F) |
| 1940-07-24 | Record high minimum temperature | Record high minimum temperature 28.9 C (84.0 F) |
| 1968-07-26 | Record daily precipitation | Record daily precipitation 92.7 mm (3.6 in) |
| 1984-03-05 | Record snow depth | Record snow depth 76.2 cm (30.0 in) |
| 1994-02-09 | Record low minimum temperature | Record low minimum temperature -42.2 C (-44.0 F) |
| 2005-07-25 | Record high minimum temperature | Record high minimum temperature 33.3 C (91.9 F) |
| 2007-05-06 | Record daily precipitation | Record daily precipitation 103.6 mm (4.1 in) |
| 2008-06-06 | Record daily precipitation | Record daily precipitation 140.5 mm (5.5 in) |
Wettest Day of Each Month
Jun: 140.5 mm (5.5 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 49.8 mm (2.0 in) | 9 January 1939 |
| Feb | 50.8 mm (2.0 in) | 15 February 1995 |
| Mar | 53.3 mm (2.1 in) | 25 March 1942 |
| Apr | 66.0 mm (2.6 in) | 25 April 1935 |
| May | 103.6 mm (4.1 in) | 6 May 2007 |
| Jun | 140.5 mm (5.5 in) | 6 June 2008 |
| Jul | 92.7 mm (3.6 in) | 26 July 1968 |
| Aug | 92.2 mm (3.6 in) | 18 August 1930 |
| Sep | 82.6 mm (3.3 in) | 19 September 1996 |
| Oct | 71.4 mm (2.8 in) | 16 October 1980 |
| Nov | 37.6 mm (1.5 in) | 2 November 1972 |
| Dec | 22.9 mm (0.9 in) | 15 December 1902 |
Period of Record Coverage
1897 to 2009| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1897 | 115 | 32% | No |
| 1898 | 341 | 93% | Yes |
| 1899 | 297 | 81% | No |
| 1900 | 228 | 62% | No |
| 1901 | 268 | 73% | No |
| 1902 | 357 | 98% | Yes |
| 1903 | 337 | 92% | Yes |
| 1904 | 355 | 97% | Yes |
| 1905 | 364 | 100% | Yes |
| 1906 | 269 | 74% | No |
| 1907 | 321 | 88% | No |
| 1908 | 298 | 81% | No |
| 1909 | 360 | 99% | Yes |
| 1910 | 329 | 90% | Yes |
| 1911 | 354 | 97% | Yes |
| 1912 | 49 | 13% | No |
| 1913 | 239 | 65% | No |
| 1916 | 271 | 74% | No |
| 1917 | 364 | 100% | Yes |
| 1918 | 362 | 99% | Yes |
| 1919 | 364 | 100% | Yes |
| 1920 | 346 | 95% | Yes |
| 1921 | 361 | 99% | Yes |
| 1922 | 359 | 98% | Yes |
| 1923 | 317 | 87% | No |
| 1924 | 366 | 100% | Yes |
| 1925 | 355 | 97% | Yes |
| 1926 | 365 | 100% | Yes |
| 1927 | 364 | 100% | Yes |
| 1928 | 362 | 99% | Yes |
| 1929 | 365 | 100% | Yes |
| 1930 | 358 | 98% | Yes |
| 1931 | 364 | 100% | Yes |
| 1932 | 366 | 100% | Yes |
| 1933 | 363 | 99% | Yes |
| 1934 | 365 | 100% | Yes |
| 1935 | 365 | 100% | Yes |
| 1936 | 366 | 100% | Yes |
| 1937 | 365 | 100% | Yes |
| 1938 | 364 | 100% | Yes |
| 1939 | 364 | 100% | Yes |
| 1940 | 366 | 100% | Yes |
| 1941 | 358 | 98% | Yes |
| 1942 | 334 | 92% | Yes |
| 1943 | 365 | 100% | Yes |
| 1944 | 365 | 100% | Yes |
| 1945 | 365 | 100% | Yes |
| 1946 | 365 | 100% | Yes |
| 1947 | 365 | 100% | Yes |
| 1948 | 364 | 99% | Yes |
| 1949 | 138 | 38% | No |
| 1950 | 365 | 100% | Yes |
| 1951 | 365 | 100% | Yes |
| 1952 | 366 | 100% | Yes |
| 1953 | 365 | 100% | Yes |
| 1954 | 365 | 100% | Yes |
| 1955 | 363 | 99% | Yes |
| 1956 | 365 | 100% | Yes |
| 1957 | 363 | 99% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 365 | 100% | Yes |
| 1960 | 365 | 100% | Yes |
| 1961 | 358 | 98% | Yes |
| 1962 | 362 | 99% | Yes |
| 1963 | 360 | 99% | Yes |
| 1964 | 365 | 100% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 364 | 100% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 362 | 99% | Yes |
| 1969 | 360 | 99% | Yes |
| 1970 | 351 | 96% | Yes |
| 1971 | 361 | 99% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 365 | 100% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 365 | 100% | Yes |
| 1978 | 365 | 100% | Yes |
| 1979 | 365 | 100% | Yes |
| 1980 | 366 | 100% | Yes |
| 1981 | 365 | 100% | Yes |
| 1982 | 365 | 100% | Yes |
| 1983 | 365 | 100% | Yes |
| 1984 | 366 | 100% | Yes |
| 1985 | 364 | 100% | Yes |
| 1986 | 365 | 100% | Yes |
| 1987 | 362 | 99% | Yes |
| 1988 | 366 | 100% | Yes |
| 1989 | 362 | 99% | Yes |
| 1990 | 363 | 99% | Yes |
| 1991 | 365 | 100% | Yes |
| 1992 | 366 | 100% | Yes |
| 1993 | 363 | 99% | Yes |
| 1994 | 361 | 99% | Yes |
| 1995 | 363 | 99% | Yes |
| 1996 | 362 | 99% | Yes |
| 1997 | 365 | 100% | Yes |
| 1998 | 361 | 99% | Yes |
| 1999 | 361 | 99% | Yes |
| 2000 | 365 | 100% | Yes |
| 2001 | 359 | 98% | Yes |
| 2002 | 364 | 100% | Yes |
| 2003 | 359 | 98% | Yes |
| 2004 | 361 | 99% | Yes |
| 2005 | 348 | 95% | Yes |
| 2006 | 364 | 100% | Yes |
| 2007 | 332 | 91% | Yes |
| 2008 | 365 | 100% | Yes |
| 2009 | 151 | 41% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 25 April 2009 | Gann Valley 4NW, US | daily snowfall | 15.2 cm (6.0 in) | 10.1 cm (4.0 in) | 3 years | 28 of 100 (Routine) |
| 25 April 2009 | Gann Valley 4NW, US | daily snow depth | 15.2 cm (6.0 in) | 10.1 cm (4.0 in) | 3 years | 27 of 100 (Routine) |
| 7 April 2009 | Gann Valley 4NW, US | daily snow depth | 30.5 cm (12.0 in) | 15.3 cm (6.0 in) | 100 years | 65 of 100 (Major) |
| 6 April 2009 | Gann Valley 4NW, US | monthly snow depth (Tie) | 35.6 cm (14.0 in) | tie | 0 years | 5 of 100 (Routine) |
| 5 April 2009 | Gann Valley 4NW, US | monthly snow depth | 35.6 cm (14.0 in) | 2.6 cm (1.0 in) | 70 years | 45 of 100 (Notable) |
| 4 April 2009 | Gann Valley 4NW, US | daily snow depth | 22.9 cm (9.0 in) | 2.6 cm (1.0 in) | 74 years | 36 of 100 (Notable) |
| 3 April 2009 | Gann Valley 4NW, US | daily snow depth | 25.4 cm (10.0 in) | 7.6 cm (3.0 in) | 34 years | 32 of 100 (Routine) |
| 2 April 2009 | Gann Valley 4NW, US | daily snow depth | 27.9 cm (11.0 in) | 7.6 cm (3.0 in) | 34 years | 32 of 100 (Routine) |
| 1 April 2009 | Gann Valley 4NW, US | daily snow depth | 27.9 cm (11.0 in) | 7.6 cm (3.0 in) | 34 years | 32 of 100 (Routine) |
| 31 March 2009 | Gann Valley 4NW, US | daily snowfall | 25.4 cm (10.0 in) | 12.7 cm (5.0 in) | 0 years | 33 of 100 (Routine) |
| 31 March 2009 | Gann Valley 4NW, US | daily snow depth | 25.4 cm (10.0 in) | 5.1 cm (2.0 in) | 34 years | 25 of 100 (Routine) |
| 11 March 2009 | Gann Valley 4NW, US | daily low max | -14.4 C (6.1 F) | 1.1 C (2.0 F) | 11 years | 14 of 100 (Routine) |
| 10 March 2009 | Gann Valley 4NW, US | daily snowfall (Tie) | 5.1 cm (2.0 in) | tie | 59 years | 6 of 100 (Routine) |
| 28 February 2009 | Gann Valley 4NW, US | daily snowfall | 12.7 cm (5.0 in) | 2.5 cm (1.0 in) | 106 years | 45 of 100 (Notable) |
| 10 February 2009 | Gann Valley 4NW, US | daily high min | 1.7 C (35.1 F) | 2.3 C (4.1 F) | 33 years | 21 of 100 (Routine) |
| 6 February 2009 | Gann Valley 4NW, US | daily high max (Tie) | 16.1 C (61.0 F) | tie | 18 years | 3 of 100 (Routine) |
| 16 January 2009 | Gann Valley 4NW, US | daily low min | -32.2 C (-26.0 F) | 0.5 C (0.9 F) | 32 years | 19 of 100 (Routine) |
| 16 December 2008 | Gann Valley 4NW, US | daily low max | -20.0 C (-4.0 F) | 1.1 C (2.0 F) | 19 years | 16 of 100 (Routine) |
| 9 December 2008 | Gann Valley 4NW, US | daily snowfall | 5.1 cm (2.0 in) | 2.6 cm (1.0 in) | 105 years | 46 of 100 (Notable) |
| 22 October 2008 | Gann Valley 4NW, US | daily rain | 18.8 mm (0.7 in) | 3.1 mm (0.12 in) | 51 years | 20 of 100 (Routine) |
Climate Trend
91 complete years, 1902 to 2008| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1902 | 7.8 C | -0.15 C |
| 1904 | 7.0 C | -0.96 C |
| 1905 | 7.4 C | -0.57 C |
| 1909 | 7.3 C | -0.69 C |
| 1911 | 8.3 C | +0.34 C |
| 1917 | 5.9 C | -2.06 C |
| 1918 | 7.9 C | -0.10 C |
| 1919 | 7.1 C | -0.86 C |
| 1920 | 7.7 C | -0.22 C |
| 1921 | 9.3 C | +1.30 C |
| 1922 | 7.4 C | -0.56 C |
| 1924 | 7.5 C | -0.50 C |
| 1925 | 9.4 C | +1.48 C |
| 1926 | 9.5 C | +1.52 C |
| 1927 | 8.6 C | +0.66 C |
| 1928 | 9.6 C | +1.59 C |
| 1929 | 7.7 C | -0.31 C |
| 1930 | 9.7 C | +1.74 C |
| 1931 | 11.5 C | +3.49 C |
| 1932 | 8.8 C | +0.83 C |
| 1933 | 10.6 C | +2.59 C |
| 1934 | 11.1 C | +3.18 C |
| 1935 | 9.6 C | +1.68 C |
| 1936 | 8.4 C | +0.46 C |
| 1937 | 8.2 C | +0.28 C |
| 1938 | 9.5 C | +1.54 C |
| 1939 | 10.4 C | +2.39 C |
| 1940 | 8.6 C | +0.67 C |
| 1941 | 9.5 C | +1.55 C |
| 1943 | 8.2 C | +0.27 C |
| 1944 | 7.6 C | -0.32 C |
| 1945 | 7.4 C | -0.56 C |
| 1946 | 8.6 C | +0.59 C |
| 1947 | 7.6 C | -0.40 C |
| 1948 | 8.2 C | +0.20 C |
| 1950 | 5.5 C | -2.48 C |
| 1951 | 5.6 C | -2.35 C |
| 1953 | 8.6 C | +0.68 C |
| 1954 | 8.5 C | +0.55 C |
| 1955 | 7.7 C | -0.26 C |
| 1956 | 7.4 C | -0.56 C |
| 1957 | 7.7 C | -0.26 C |
| 1958 | 8.1 C | +0.12 C |
| 1959 | 7.8 C | -0.12 C |
| 1960 | 6.6 C | -1.34 C |
| 1961 | 7.4 C | -0.60 C |
| 1962 | 7.0 C | -1.00 C |
| 1963 | 8.6 C | +0.62 C |
| 1964 | 8.1 C | +0.16 C |
| 1965 | 7.2 C | -0.76 C |
| 1966 | 6.9 C | -1.09 C |
| 1967 | 7.5 C | -0.46 C |
| 1968 | 7.7 C | -0.30 C |
| 1969 | 7.0 C | -0.98 C |
| 1970 | 7.6 C | -0.33 C |
| 1971 | 7.7 C | -0.25 C |
| 1972 | 6.6 C | -1.36 C |
| 1973 | 8.6 C | +0.68 C |
| 1974 | 8.7 C | +0.74 C |
| 1975 | 7.9 C | -0.04 C |
| 1976 | 9.2 C | +1.24 C |
| 1977 | 8.6 C | +0.64 C |
| 1978 | 6.9 C | -1.09 C |
| 1979 | 7.1 C | -0.88 C |
| 1980 | 9.3 C | +1.31 C |
| 1981 | 9.9 C | +1.95 C |
| 1982 | 7.1 C | -0.89 C |
| 1983 | 7.9 C | -0.10 C |
| 1984 | 8.2 C | +0.20 C |
| 1985 | 6.7 C | -1.28 C |
| 1986 | 8.6 C | +0.61 C |
| 1987 | 9.5 C | +1.58 C |
| 1988 | 8.0 C | +0.07 C |
| 1989 | 7.0 C | -0.96 C |
| 1990 | 8.6 C | +0.59 C |
| 1991 | 7.6 C | -0.34 C |
| 1992 | 6.9 C | -1.07 C |
| 1993 | 5.1 C | -2.90 C |
| 1994 | 6.2 C | -1.72 C |
| 1995 | 6.3 C | -1.64 C |
| 1996 | 4.9 C | -3.08 C |
| 1997 | 6.6 C | -1.33 C |
| 1998 | 8.4 C | +0.45 C |
| 1999 | 8.5 C | +0.53 C |
| 2000 | 7.7 C | -0.30 C |
| 2001 | 7.5 C | -0.42 C |
| 2002 | 7.9 C | -0.07 C |
| 2003 | 7.9 C | -0.02 C |
| 2004 | 8.0 C | -0.01 C |
| 2006 | 9.3 C | +1.34 C |
| 2008 | 6.8 C | -1.18 C |
The annual mean temperature here has fallen by 0.11 C (0.02 to 0.19) per decade over 1902 to 2008. In Fahrenheit: 0.19 F (0.03 to 0.34) per decade. The slope is a straight line fitted to 91 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | -0.10 C (-0.19 to -0.02) per decade | -0.19 F (-0.34 to -0.03) per decade | 1902 to 2008 | 91 | Fall |
| Mean daily maximum | -0.14 C (-0.25 to -0.04) per decade | -0.3 F (-0.5 to -0.1) per decade | 1902 to 2008 | 91 | Fall |
| Mean daily minimum | -0.06 C (-0.14 to 0.01) per decade | -0.12 F (-0.25 to 0.02) per decade | 1902 to 2008 | 91 | Not clearly different from zero |
A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.
Extremes by Year
1897 to 2009| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 48.9 C (120.0 F) | 1936 | 40.0 C (104.0 F) | 111 |
| Coldest night (TNn) | -42.2 C (-44.0 F) | 1994 | -31.1 C (-24.0 F) | 111 |
| Wettest day (Rx1day) | 140.5 mm (5.5 in) | 2008 | 43.9 mm (1.7 in) | 111 |
| Wettest five days (Rx5day) | 203.5 mm (8.0 in) | 2008 | 68.1 mm (2.7 in) | 111 |
| Longest dry spell (CDD) | 77 days | 1952 | 35 days | 111 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1897 | 37.8 C (100.0 F) |
| 1898 | 38.3 C (100.9 F) |
| 1899 | 41.7 C (107.1 F) |
| 1900 | 40.6 C (105.1 F) |
| 1901 | 43.3 C (109.9 F) |
| 1902 | 42.2 C (108.0 F) |
| 1903 | 41.7 C (107.1 F) |
| 1904 | 42.8 C (109.0 F) |
| 1905 | 38.3 C (100.9 F) |
| 1906 | 36.7 C (98.1 F) |
| 1907 | 38.9 C (102.0 F) |
| 1908 | 39.4 C (102.9 F) |
| 1909 | 40.6 C (105.1 F) |
| 1910 | 40.6 C (105.1 F) |
| 1911 | 41.1 C (106.0 F) |
| 1912 | 15.6 C (60.1 F) |
| 1913 | 39.4 C (102.9 F) |
| 1916 | 37.8 C (100.0 F) |
| 1917 | 41.1 C (106.0 F) |
| 1918 | 36.7 C (98.1 F) |
| 1919 | 41.7 C (107.1 F) |
| 1920 | 39.4 C (102.9 F) |
| 1921 | 40.6 C (105.1 F) |
| 1922 | 37.8 C (100.0 F) |
| 1923 | 37.2 C (99.0 F) |
| 1924 | 38.3 C (100.9 F) |
| 1925 | 40.6 C (105.1 F) |
| 1926 | 43.3 C (109.9 F) |
| 1927 | 40.0 C (104.0 F) |
| 1928 | 42.2 C (108.0 F) |
| 1929 | 41.7 C (107.1 F) |
| 1930 | 43.3 C (109.9 F) |
| 1931 | 44.4 C (111.9 F) |
| 1932 | 40.6 C (105.1 F) |
| 1933 | 46.1 C (115.0 F) |
| 1934 | 46.1 C (115.0 F) |
| 1935 | 44.4 C (111.9 F) |
| 1936 | 48.9 C (120.0 F) |
| 1937 | 43.9 C (111.0 F) |
| 1938 | 42.2 C (108.0 F) |
| 1939 | 42.2 C (108.0 F) |
| 1940 | 44.4 C (111.9 F) |
| 1941 | 42.2 C (108.0 F) |
| 1942 | 38.9 C (102.0 F) |
| 1943 | 41.1 C (106.0 F) |
| 1944 | 36.7 C (98.1 F) |
| 1945 | 38.3 C (100.9 F) |
| 1946 | 38.3 C (100.9 F) |
| 1947 | 43.3 C (109.9 F) |
| 1948 | 37.2 C (99.0 F) |
| 1949 | 33.9 C (93.0 F) |
| 1950 | 37.8 C (100.0 F) |
| 1951 | 35.6 C (96.1 F) |
| 1952 | 39.4 C (102.9 F) |
| 1953 | 37.8 C (100.0 F) |
| 1954 | 40.0 C (104.0 F) |
| 1955 | 43.3 C (109.9 F) |
| 1956 | 40.6 C (105.1 F) |
| 1957 | 38.9 C (102.0 F) |
| 1958 | 38.9 C (102.0 F) |
| 1959 | 39.4 C (102.9 F) |
| 1960 | 40.0 C (104.0 F) |
| 1961 | 38.3 C (100.9 F) |
| 1962 | 37.8 C (100.0 F) |
| 1963 | 40.6 C (105.1 F) |
| 1964 | 43.3 C (109.9 F) |
| 1965 | 43.3 C (109.9 F) |
| 1966 | 42.8 C (109.0 F) |
| 1967 | 38.3 C (100.9 F) |
| 1968 | 40.0 C (104.0 F) |
| 1969 | 39.4 C (102.9 F) |
| 1970 | 40.6 C (105.1 F) |
| 1971 | 40.6 C (105.1 F) |
| 1972 | 36.7 C (98.1 F) |
| 1973 | 40.6 C (105.1 F) |
| 1974 | 40.6 C (105.1 F) |
| 1975 | 41.1 C (106.0 F) |
| 1976 | 44.4 C (111.9 F) |
| 1977 | 40.0 C (104.0 F) |
| 1978 | 39.4 C (102.9 F) |
| 1979 | 40.0 C (104.0 F) |
| 1980 | 42.2 C (108.0 F) |
| 1981 | 38.9 C (102.0 F) |
| 1982 | 38.3 C (100.9 F) |
| 1983 | 40.6 C (105.1 F) |
| 1984 | 38.3 C (100.9 F) |
| 1985 | 40.0 C (104.0 F) |
| 1986 | 37.8 C (100.0 F) |
| 1987 | 40.6 C (105.1 F) |
| 1988 | 43.9 C (111.0 F) |
| 1989 | 41.7 C (107.1 F) |
| 1990 | 37.8 C (100.0 F) |
| 1991 | 40.6 C (105.1 F) |
| 1992 | 35.0 C (95.0 F) |
| 1993 | 33.9 C (93.0 F) |
| 1994 | 35.6 C (96.1 F) |
| 1995 | 37.8 C (100.0 F) |
| 1996 | 37.2 C (99.0 F) |
| 1997 | 35.6 C (96.1 F) |
| 1998 | 37.8 C (100.0 F) |
| 1999 | 38.9 C (102.0 F) |
| 2000 | 40.6 C (105.1 F) |
| 2001 | 38.9 C (102.0 F) |
| 2002 | 43.3 C (109.9 F) |
| 2003 | 44.4 C (111.9 F) |
| 2004 | 36.1 C (97.0 F) |
| 2005 | 42.8 C (109.0 F) |
| 2006 | 43.3 C (109.9 F) |
| 2007 | 38.9 C (102.0 F) |
| 2008 | 35.6 C (96.1 F) |
| 2009 | 36.7 C (98.1 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1897 | -30.0 C (-22.0 F) |
| 1898 | -28.9 C (-20.0 F) |
| 1899 | -41.1 C (-42.0 F) |
| 1900 | -22.8 C (-9.0 F) |
| 1901 | -29.4 C (-20.9 F) |
| 1902 | -28.9 C (-20.0 F) |
| 1903 | -32.8 C (-27.0 F) |
| 1904 | -31.1 C (-24.0 F) |
| 1905 | -38.9 C (-38.0 F) |
| 1906 | -31.7 C (-25.1 F) |
| 1907 | -29.4 C (-20.9 F) |
| 1908 | -27.2 C (-17.0 F) |
| 1909 | -30.6 C (-23.1 F) |
| 1910 | -30.0 C (-22.0 F) |
| 1911 | -33.9 C (-29.0 F) |
| 1912 | -36.7 C (-34.1 F) |
| 1913 | -30.6 C (-23.1 F) |
| 1916 | -32.8 C (-27.0 F) |
| 1917 | -38.3 C (-36.9 F) |
| 1918 | -34.4 C (-29.9 F) |
| 1919 | -29.4 C (-20.9 F) |
| 1920 | -29.4 C (-20.9 F) |
| 1921 | -26.7 C (-16.1 F) |
| 1922 | -32.8 C (-27.0 F) |
| 1923 | -27.2 C (-17.0 F) |
| 1924 | -36.1 C (-33.0 F) |
| 1925 | -27.2 C (-17.0 F) |
| 1926 | -28.9 C (-20.0 F) |
| 1927 | -31.7 C (-25.1 F) |
| 1928 | -29.4 C (-20.9 F) |
| 1929 | -31.1 C (-24.0 F) |
| 1930 | -33.9 C (-29.0 F) |
| 1931 | -23.3 C (-9.9 F) |
| 1932 | -31.7 C (-25.1 F) |
| 1933 | -32.2 C (-26.0 F) |
| 1934 | -26.7 C (-16.1 F) |
| 1935 | -30.0 C (-22.0 F) |
| 1936 | -34.4 C (-29.9 F) |
| 1937 | -30.0 C (-22.0 F) |
| 1938 | -30.0 C (-22.0 F) |
| 1939 | -31.1 C (-24.0 F) |
| 1940 | -31.7 C (-25.1 F) |
| 1941 | -26.7 C (-16.1 F) |
| 1942 | -24.4 C (-11.9 F) |
| 1943 | -32.8 C (-27.0 F) |
| 1944 | -28.9 C (-20.0 F) |
| 1945 | -28.9 C (-20.0 F) |
| 1946 | -26.7 C (-16.1 F) |
| 1947 | -29.4 C (-20.9 F) |
| 1948 | -30.6 C (-23.1 F) |
| 1949 | -32.2 C (-26.0 F) |
| 1950 | -31.7 C (-25.1 F) |
| 1951 | -32.2 C (-26.0 F) |
| 1952 | -27.8 C (-18.0 F) |
| 1953 | -30.6 C (-23.1 F) |
| 1954 | -34.4 C (-29.9 F) |
| 1955 | -28.9 C (-20.0 F) |
| 1956 | -31.7 C (-25.1 F) |
| 1957 | -31.7 C (-25.1 F) |
| 1958 | -30.6 C (-23.1 F) |
| 1959 | -32.8 C (-27.0 F) |
| 1960 | -32.8 C (-27.0 F) |
| 1961 | -33.3 C (-27.9 F) |
| 1962 | -34.4 C (-29.9 F) |
| 1963 | -35.6 C (-32.1 F) |
| 1964 | -31.7 C (-25.1 F) |
| 1965 | -33.3 C (-27.9 F) |
| 1966 | -37.2 C (-35.0 F) |
| 1967 | -31.7 C (-25.1 F) |
| 1968 | -33.3 C (-27.9 F) |
| 1969 | -30.0 C (-22.0 F) |
| 1970 | -36.1 C (-33.0 F) |
| 1971 | -30.6 C (-23.1 F) |
| 1972 | -37.2 C (-35.0 F) |
| 1973 | -29.4 C (-20.9 F) |
| 1974 | -31.7 C (-25.1 F) |
| 1975 | -30.6 C (-23.1 F) |
| 1976 | -30.6 C (-23.1 F) |
| 1977 | -31.7 C (-25.1 F) |
| 1978 | -32.2 C (-26.0 F) |
| 1979 | -30.6 C (-23.1 F) |
| 1980 | -27.8 C (-18.0 F) |
| 1981 | -32.8 C (-27.0 F) |
| 1982 | -33.9 C (-29.0 F) |
| 1983 | -34.4 C (-29.9 F) |
| 1984 | -31.1 C (-24.0 F) |
| 1985 | -32.8 C (-27.0 F) |
| 1986 | -27.8 C (-18.0 F) |
| 1987 | -24.4 C (-11.9 F) |
| 1988 | -33.3 C (-27.9 F) |
| 1989 | -36.1 C (-33.0 F) |
| 1990 | -37.8 C (-36.0 F) |
| 1991 | -28.9 C (-20.0 F) |
| 1992 | -26.7 C (-16.1 F) |
| 1993 | -29.4 C (-20.9 F) |
| 1994 | -42.2 C (-44.0 F) |
| 1995 | -27.8 C (-18.0 F) |
| 1996 | -41.1 C (-42.0 F) |
| 1997 | -29.4 C (-20.9 F) |
| 1998 | -32.8 C (-27.0 F) |
| 1999 | -31.1 C (-24.0 F) |
| 2000 | -31.1 C (-24.0 F) |
| 2001 | -29.4 C (-20.9 F) |
| 2002 | -23.9 C (-11.0 F) |
| 2003 | -30.6 C (-23.1 F) |
| 2004 | -29.4 C (-20.9 F) |
| 2005 | -31.7 C (-25.1 F) |
| 2006 | -27.2 C (-17.0 F) |
| 2007 | -28.9 C (-20.0 F) |
| 2008 | -27.8 C (-18.0 F) |
| 2009 | -32.2 C (-26.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1897 | 27.9 mm (1.1 in) |
| 1898 | 52.1 mm (2.1 in) |
| 1899 | 48.3 mm (1.9 in) |
| 1900 | 73.7 mm (2.9 in) |
| 1901 | 50.8 mm (2.0 in) |
| 1902 | 76.2 mm (3.0 in) |
| 1903 | 26.7 mm (1.1 in) |
| 1904 | 81.3 mm (3.2 in) |
| 1905 | 77.5 mm (3.1 in) |
| 1906 | 69.3 mm (2.7 in) |
| 1907 | 49.5 mm (1.9 in) |
| 1908 | 36.8 mm (1.4 in) |
| 1909 | 44.5 mm (1.8 in) |
| 1910 | 78.7 mm (3.1 in) |
| 1911 | 31.5 mm (1.2 in) |
| 1912 | 27.9 mm (1.1 in) |
| 1913 | 38.1 mm (1.5 in) |
| 1916 | 81.3 mm (3.2 in) |
| 1917 | 34.3 mm (1.4 in) |
| 1918 | 37.6 mm (1.5 in) |
| 1919 | 52.1 mm (2.1 in) |
| 1920 | 50.8 mm (2.0 in) |
| 1921 | 33.0 mm (1.3 in) |
| 1922 | 57.2 mm (2.3 in) |
| 1923 | 58.2 mm (2.3 in) |
| 1924 | 79.8 mm (3.1 in) |
| 1925 | 39.1 mm (1.5 in) |
| 1926 | 53.3 mm (2.1 in) |
| 1927 | 40.6 mm (1.6 in) |
| 1928 | 39.1 mm (1.5 in) |
| 1929 | 39.4 mm (1.6 in) |
| 1930 | 92.2 mm (3.6 in) |
| 1931 | 37.8 mm (1.5 in) |
| 1932 | 48.3 mm (1.9 in) |
| 1933 | 31.2 mm (1.2 in) |
| 1934 | 35.6 mm (1.4 in) |
| 1935 | 66.0 mm (2.6 in) |
| 1936 | 28.4 mm (1.1 in) |
| 1937 | 43.9 mm (1.7 in) |
| 1938 | 50.8 mm (2.0 in) |
| 1939 | 57.4 mm (2.3 in) |
| 1940 | 25.9 mm (1.0 in) |
| 1941 | 49.3 mm (1.9 in) |
| 1942 | 53.3 mm (2.1 in) |
| 1943 | 42.9 mm (1.7 in) |
| 1944 | 76.2 mm (3.0 in) |
| 1945 | 38.9 mm (1.5 in) |
| 1946 | 47.0 mm (1.9 in) |
| 1947 | 42.4 mm (1.7 in) |
| 1948 | 61.0 mm (2.4 in) |
| 1949 | 36.8 mm (1.4 in) |
| 1950 | 45.5 mm (1.8 in) |
| 1951 | 40.6 mm (1.6 in) |
| 1952 | 50.8 mm (2.0 in) |
| 1953 | 30.7 mm (1.2 in) |
| 1954 | 64.5 mm (2.5 in) |
| 1955 | 27.9 mm (1.1 in) |
| 1956 | 38.4 mm (1.5 in) |
| 1957 | 20.8 mm (0.8 in) |
| 1958 | 31.0 mm (1.2 in) |
| 1959 | 47.2 mm (1.9 in) |
| 1960 | 31.8 mm (1.3 in) |
| 1961 | 33.0 mm (1.3 in) |
| 1962 | 52.3 mm (2.1 in) |
| 1963 | 35.1 mm (1.4 in) |
| 1964 | 54.6 mm (2.1 in) |
| 1965 | 34.5 mm (1.4 in) |
| 1966 | 45.2 mm (1.8 in) |
| 1967 | 31.8 mm (1.3 in) |
| 1968 | 92.7 mm (3.6 in) |
| 1969 | 39.4 mm (1.6 in) |
| 1970 | 24.9 mm (1.0 in) |
| 1971 | 35.6 mm (1.4 in) |
| 1972 | 43.4 mm (1.7 in) |
| 1973 | 44.5 mm (1.8 in) |
| 1974 | 30.7 mm (1.2 in) |
| 1975 | 25.9 mm (1.0 in) |
| 1976 | 44.7 mm (1.8 in) |
| 1977 | 37.1 mm (1.5 in) |
| 1978 | 42.2 mm (1.7 in) |
| 1979 | 43.2 mm (1.7 in) |
| 1980 | 71.4 mm (2.8 in) |
| 1981 | 34.3 mm (1.4 in) |
| 1982 | 57.9 mm (2.3 in) |
| 1983 | 42.9 mm (1.7 in) |
| 1984 | 38.6 mm (1.5 in) |
| 1985 | 40.1 mm (1.6 in) |
| 1986 | 39.1 mm (1.5 in) |
| 1987 | 42.9 mm (1.7 in) |
| 1988 | 34.8 mm (1.4 in) |
| 1989 | 32.5 mm (1.3 in) |
| 1990 | 91.4 mm (3.6 in) |
| 1991 | 50.0 mm (2.0 in) |
| 1992 | 52.1 mm (2.1 in) |
| 1993 | 52.3 mm (2.1 in) |
| 1994 | 45.7 mm (1.8 in) |
| 1995 | 50.8 mm (2.0 in) |
| 1996 | 82.6 mm (3.3 in) |
| 1997 | 48.3 mm (1.9 in) |
| 1998 | 57.2 mm (2.3 in) |
| 1999 | 84.3 mm (3.3 in) |
| 2000 | 30.5 mm (1.2 in) |
| 2001 | 51.1 mm (2.0 in) |
| 2002 | 48.3 mm (1.9 in) |
| 2003 | 33.5 mm (1.3 in) |
| 2004 | 49.8 mm (2.0 in) |
| 2005 | 42.7 mm (1.7 in) |
| 2006 | 29.0 mm (1.1 in) |
| 2007 | 103.6 mm (4.1 in) |
| 2008 | 140.5 mm (5.5 in) |
| 2009 | 21.6 mm (0.9 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1897 | 38.1 mm (1.5 in) |
| 1898 | 62.3 mm (2.5 in) |
| 1899 | 67.4 mm (2.7 in) |
| 1900 | 121.9 mm (4.8 in) |
| 1901 | 91.0 mm (3.6 in) |
| 1902 | 92.5 mm (3.6 in) |
| 1903 | 34.3 mm (1.4 in) |
| 1904 | 92.8 mm (3.7 in) |
| 1905 | 100.3 mm (3.9 in) |
| 1906 | 72.1 mm (2.8 in) |
| 1907 | 96.7 mm (3.8 in) |
| 1908 | 42.6 mm (1.7 in) |
| 1909 | 99.9 mm (3.9 in) |
| 1910 | 101.8 mm (4.0 in) |
| 1911 | 64.6 mm (2.5 in) |
| 1912 | 28.4 mm (1.1 in) |
| 1913 | 74.5 mm (2.9 in) |
| 1916 | 99.1 mm (3.9 in) |
| 1917 | 42.7 mm (1.7 in) |
| 1918 | 78.7 mm (3.1 in) |
| 1919 | 61.8 mm (2.4 in) |
| 1920 | 95.3 mm (3.8 in) |
| 1921 | 58.4 mm (2.3 in) |
| 1922 | 134.2 mm (5.3 in) |
| 1923 | 85.4 mm (3.4 in) |
| 1924 | 79.8 mm (3.1 in) |
| 1925 | 61.7 mm (2.4 in) |
| 1926 | 59.9 mm (2.4 in) |
| 1927 | 72.6 mm (2.9 in) |
| 1928 | 49.0 mm (1.9 in) |
| 1929 | 47.2 mm (1.9 in) |
| 1930 | 93.5 mm (3.7 in) |
| 1931 | 39.3 mm (1.5 in) |
| 1932 | 80.3 mm (3.2 in) |
| 1933 | 42.7 mm (1.7 in) |
| 1934 | 37.8 mm (1.5 in) |
| 1935 | 98.5 mm (3.9 in) |
| 1936 | 42.4 mm (1.7 in) |
| 1937 | 65.5 mm (2.6 in) |
| 1938 | 80.2 mm (3.2 in) |
| 1939 | 95.8 mm (3.8 in) |
| 1940 | 43.4 mm (1.7 in) |
| 1941 | 56.0 mm (2.2 in) |
| 1942 | 78.1 mm (3.1 in) |
| 1943 | 76.9 mm (3.0 in) |
| 1944 | 135.1 mm (5.3 in) |
| 1945 | 52.9 mm (2.1 in) |
| 1946 | 79.5 mm (3.1 in) |
| 1947 | 84.9 mm (3.3 in) |
| 1948 | 71.2 mm (2.8 in) |
| 1949 | 55.6 mm (2.2 in) |
| 1950 | 73.9 mm (2.9 in) |
| 1951 | 59.5 mm (2.3 in) |
| 1952 | 59.2 mm (2.3 in) |
| 1953 | 57.4 mm (2.3 in) |
| 1954 | 72.9 mm (2.9 in) |
| 1955 | 51.0 mm (2.0 in) |
| 1956 | 81.3 mm (3.2 in) |
| 1957 | 45.2 mm (1.8 in) |
| 1958 | 46.5 mm (1.8 in) |
| 1959 | 50.0 mm (2.0 in) |
| 1960 | 37.4 mm (1.5 in) |
| 1961 | 60.8 mm (2.4 in) |
| 1962 | 80.8 mm (3.2 in) |
| 1963 | 83.9 mm (3.3 in) |
| 1964 | 64.0 mm (2.5 in) |
| 1965 | 64.8 mm (2.6 in) |
| 1966 | 73.1 mm (2.9 in) |
| 1967 | 70.1 mm (2.8 in) |
| 1968 | 107.7 mm (4.2 in) |
| 1969 | 39.4 mm (1.6 in) |
| 1970 | 52.4 mm (2.1 in) |
| 1971 | 48.1 mm (1.9 in) |
| 1972 | 78.3 mm (3.1 in) |
| 1973 | 53.9 mm (2.1 in) |
| 1974 | 45.2 mm (1.8 in) |
| 1975 | 46.0 mm (1.8 in) |
| 1976 | 44.7 mm (1.8 in) |
| 1977 | 58.2 mm (2.3 in) |
| 1978 | 47.0 mm (1.9 in) |
| 1979 | 52.7 mm (2.1 in) |
| 1980 | 91.0 mm (3.6 in) |
| 1981 | 71.1 mm (2.8 in) |
| 1982 | 80.0 mm (3.1 in) |
| 1983 | 55.6 mm (2.2 in) |
| 1984 | 70.4 mm (2.8 in) |
| 1985 | 51.3 mm (2.0 in) |
| 1986 | 71.7 mm (2.8 in) |
| 1987 | 52.3 mm (2.1 in) |
| 1988 | 120.3 mm (4.7 in) |
| 1989 | 74.9 mm (2.9 in) |
| 1990 | 147.5 mm (5.8 in) |
| 1991 | 79.3 mm (3.1 in) |
| 1992 | 104.2 mm (4.1 in) |
| 1993 | 56.4 mm (2.2 in) |
| 1994 | 56.4 mm (2.2 in) |
| 1995 | 63.5 mm (2.5 in) |
| 1996 | 135.5 mm (5.3 in) |
| 1997 | 68.1 mm (2.7 in) |
| 1998 | 115.9 mm (4.6 in) |
| 1999 | 97.5 mm (3.8 in) |
| 2000 | 42.2 mm (1.7 in) |
| 2001 | 76.5 mm (3.0 in) |
| 2002 | 67.4 mm (2.7 in) |
| 2003 | 42.9 mm (1.7 in) |
| 2004 | 86.3 mm (3.4 in) |
| 2005 | 103.5 mm (4.1 in) |
| 2006 | 49.0 mm (1.9 in) |
| 2007 | 162.3 mm (6.4 in) |
| 2008 | 203.5 mm (8.0 in) |
| 2009 | 22.6 mm (0.9 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1897 | 25 days |
| 1898 | 34 days |
| 1899 | 45 days |
| 1900 | 26 days |
| 1901 | 28 days |
| 1902 | 25 days |
| 1903 | 36 days |
| 1904 | 43 days |
| 1905 | 34 days |
| 1906 | 25 days |
| 1907 | 32 days |
| 1908 | 32 days |
| 1909 | 23 days |
| 1910 | 57 days |
| 1911 | 37 days |
| 1912 | 15 days |
| 1913 | 28 days |
| 1916 | 24 days |
| 1917 | 45 days |
| 1918 | 23 days |
| 1919 | 32 days |
| 1920 | 34 days |
| 1921 | 53 days |
| 1922 | 28 days |
| 1923 | 35 days |
| 1924 | 29 days |
| 1925 | 41 days |
| 1926 | 33 days |
| 1927 | 43 days |
| 1928 | 29 days |
| 1929 | 31 days |
| 1930 | 46 days |
| 1931 | 33 days |
| 1932 | 28 days |
| 1933 | 37 days |
| 1934 | 49 days |
| 1935 | 44 days |
| 1936 | 32 days |
| 1937 | 43 days |
| 1938 | 54 days |
| 1939 | 55 days |
| 1940 | 23 days |
| 1941 | 57 days |
| 1942 | 37 days |
| 1943 | 54 days |
| 1944 | 33 days |
| 1945 | 23 days |
| 1946 | 28 days |
| 1947 | 40 days |
| 1948 | 33 days |
| 1949 | 28 days |
| 1950 | 37 days |
| 1951 | 38 days |
| 1952 | 77 days |
| 1953 | 39 days |
| 1954 | 35 days |
| 1955 | 36 days |
| 1956 | 26 days |
| 1957 | 45 days |
| 1958 | 47 days |
| 1959 | 40 days |
| 1960 | 29 days |
| 1961 | 41 days |
| 1962 | 46 days |
| 1963 | 26 days |
| 1964 | 40 days |
| 1965 | 25 days |
| 1966 | 28 days |
| 1967 | 47 days |
| 1968 | 47 days |
| 1969 | 39 days |
| 1970 | 43 days |
| 1971 | 38 days |
| 1972 | 38 days |
| 1973 | 22 days |
| 1974 | 51 days |
| 1975 | 42 days |
| 1976 | 47 days |
| 1977 | 26 days |
| 1978 | 47 days |
| 1979 | 53 days |
| 1980 | 35 days |
| 1981 | 45 days |
| 1982 | 54 days |
| 1983 | 59 days |
| 1984 | 37 days |
| 1985 | 25 days |
| 1986 | 29 days |
| 1987 | 33 days |
| 1988 | 32 days |
| 1989 | 25 days |
| 1990 | 55 days |
| 1991 | 39 days |
| 1992 | 40 days |
| 1993 | 24 days |
| 1994 | 25 days |
| 1995 | 27 days |
| 1996 | 23 days |
| 1997 | 31 days |
| 1998 | 51 days |
| 1999 | 44 days |
| 2000 | 24 days |
| 2001 | 44 days |
| 2002 | 33 days |
| 2003 | 23 days |
| 2004 | 57 days |
| 2005 | 38 days |
| 2006 | 29 days |
| 2007 | 40 days |
| 2008 | 23 days |
| 2009 | 35 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
91 years with a frostAcross 91 years with a frost, the median last spring frost at Gann Valley 4NW falls on 10 May and the median first autumn frost on 26 September, which leaves a median of 139 days between them.
In 1977 to 2008 the median growing season was 142 days. That is 5 days fewer than in 1902 to 1943.
Fitted over all years, the growing season changes by -0.1 days per decade at this station.
| Measure | Median, all years | Earliest period (1902 to 1943) | Recent period (1977 to 2008) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 10 May | 8 May | 9 May | 1 day later | 0.0 days per decade |
| First autumn frost | 26 September | 27 September | 26 September | 1 day earlier | -0.1 days per decade |
| Growing days | 139 days | 147 days | 142 days | 5 days fewer | -0.1 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
99 years, 1898 to 2008A day with at least 43.7 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 122.7 mm (4.8 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 43.7 mm (1.7 in) | |
| 5 years | 59.4 mm (2.3 in) | |
| 10 years | 71.7 mm (2.8 in) | |
| 25 years | 89.8 mm (3.5 in) | |
| 50 years | 105.3 mm (4.1 in) | |
| 100 years | 122.7 mm (4.8 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 1898 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: 140.5 mm (5.5 in) in 2008; 103.6 mm (4.1 in) in 2007; 92.7 mm (3.6 in) in 1968.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Gann Valley 4NW, at 1974. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1974 ran 0.2 C (0.4 F) higher than in the years before (possible change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1974 | +0.2 | +0.4 | possible | 5 |
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Download the Data
Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-15 (15 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2025-12-31).