Station:(420086) ALTON | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
From Year=1928 To Year=2006 | |||||||||||||||
Monthly Averages | Daily Extremes | Monthly Extremes | Max. Temp. | Min. Temp. | |||||||||||
Max. | Min. | Mean | High | Date | Low | Date | Highest Mean |
Year | Lowest Mean |
Year | >= 90 F |
<= 32 F |
<= 32 F |
<= 0 F |
|
F | F | F | F | dd/yyyy or yyyymmdd |
F | dd/yyyy or yyyymmdd |
F | - | F | - | # Days | # Days | # Days | # Days | |
January | 39.6 | 15.1 | 27.3 | 64 | 09/1990 | -20 | 30/1979 | 37.0 | 2003 | 11.2 | 1937 | 0.0 | 6.9 | 30.7 | 2.1 |
February | 42.2 | 17.5 | 29.8 | 68 | 25/1986 | -17 | 10/1933 | 37.1 | 1995 | 18.0 | 1939 | 0.0 | 4.1 | 27.8 | 1.2 |
March | 47.8 | 21.8 | 34.8 | 76 | 31/1966 | -7 | 11/1962 | 45.4 | 1934 | 26.8 | 1952 | 0.0 | 1.7 | 29.7 | 0.2 |
April | 57.7 | 28.0 | 42.8 | 81 | 30/1981 | 1 | 07/1975 | 49.6 | 1992 | 35.1 | 1975 | 0.0 | 0.1 | 22.7 | 0.0 |
May | 67.2 | 34.8 | 51.0 | 90 | 30/2002 | 9 | 06/1975 | 57.1 | 1984 | 41.6 | 1930 | 0.0 | 0.0 | 10.9 | 0.0 |
June | 76.7 | 42.0 | 59.3 | 95 | 23/1961 | 23 | 02/1955 | 64.8 | 2002 | 54.0 | 1965 | 0.7 | 0.0 | 1.7 | 0.0 |
July | 82.6 | 49.8 | 66.2 | 99 | 05/1996 | 25 | 01/1948 | 71.7 | 2003 | 60.3 | 1993 | 2.8 | 0.0 | 0.0 | 0.0 |
August | 80.4 | 48.9 | 64.7 | 95 | 12/2002 | 32 | 30/1942 | 69.2 | 1958 | 60.0 | 1968 | 1.3 | 0.0 | 0.0 | 0.0 |
September | 73.9 | 41.8 | 57.8 | 91 | 06/1955 | 20 | 18/1965 | 62.1 | 1956 | 52.1 | 1965 | 0.1 | 0.0 | 2.0 | 0.0 |
October | 63.1 | 33.0 | 48.0 | 83 | 03/1964 | -2 | 30/1971 | 55.0 | 2003 | 42.2 | 1946 | 0.0 | 0.1 | 13.8 | 0.0 |
November | 49.9 | 23.0 | 36.5 | 73 | 24/1954 | -5 | 23/1931 | 43.5 | 1949 | 29.3 | 1994 | 0.0 | 1.6 | 28.0 | 0.2 |
December | 41.8 | 16.8 | 29.3 | 67 | 09/1962 | -24 | 22/1990 | 38.4 | 1950 | 20.6 | 1932 | 0.0 | 5.4 | 30.6 | 1.2 |
Annual | 60.2 | 31.0 | 45.6 | 99 | 19960705 | -24 | 19901222 | 48.4 | 2003 | 43.2 | 1932 | 4.9 | 19.9 | 198.0 | 4.9 |
Winter | 41.2 | 16.5 | 28.8 | 68 | 19860225 | -24 | 19901222 | 35.4 | 1981 | 19.9 | 1933 | 0.0 | 16.4 | 89.1 | 4.5 |
Spring | 57.6 | 28.2 | 42.9 | 90 | 20020530 | -7 | 19620311 | 49.5 | 1934 | 37.9 | 1975 | 0.0 | 1.8 | 63.3 | 0.2 |
Summer | 79.9 | 46.9 | 63.4 | 99 | 19960705 | 23 | 19550602 | 67.7 | 2002 | 60.4 | 1943 | 4.8 | 0.0 | 1.8 | 0.0 |
Fall | 62.3 | 32.6 | 47.4 | 91 | 19550906 | -5 | 19311123 | 51.1 | 1995 | 43.8 | 1972 | 0.1 | 1.7 | 43.8 | 0.2 |
Winter = Dec., Jan., and Feb. | Spring = Mar., Apr., and May | |
Summer = Jun., Jul., and Aug. | Fall = Sep., Oct., and Nov. |