Cooksville, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 15° 31° -23° (1999) 67° (1967) 1.52" 7"
February 20° 37° -19° (1996) 73° (1996) 1.43" 5.7"
March 30° 50° -6° (2002) 85° (1986) 3.02" 3"
April 40° 63° 7° (1982) 91° (1986) 3.31" 1"
May 51° 74° 22° (1966) 95° (1991) 3.88" 0"
June 60° 83° 36° (1972) 102° (1988) 4.1" 0"
July 64° 86° 45° (1988) 103° (1954) 3.33" 0"
August 62° 84° 37° (1963) 103° (1988) 3.22" 0"
September 54° 78° 24° (1974) 100° (1953) 2.91" 0"
October 43° 66° 17° (1981) 92° (1953) 2.69" 0.1"
November 32° 50° -4° (1955) 79° (2000) 2.73" 1.6"
December 21° 36° -26° (1989) 70° (1982) 2.47" 6.1"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 26° 42° 10° (1960) 66° (1970) 0.09" NA
Dec 2 26° 41° 5° (1966) 70° (1982) 0.09" NA
Dec 3 25° 41° 1° (1976) 68° (1970) 0.09" NA
Dec 4 25° 40° -2° (1991) 69° (1998) 0.09" NA
Dec 5 25° 40° 6° (2006) 67° (2001) 0.09" NA
Dec 6 24° 39° 2° (1964) 65° (1980) 0.09" NA
Dec 7 24° 39° -4° (1976) 63° (1951) 0.09" NA
Dec 8 23° 39° 2° (2006) 65° (1991) 0.09" NA
Dec 9 23° 38° -13° (1958) 58° (1952) 0.09" NA
Dec 10 23° 38° -9° (1958) 57° (1971) 0.09" NA
Dec 11 22° 38° -6° (1972) 58° (1990) 0.08" NA
Dec 12 22° 37° -10° (1962) 61° (1991) 0.08" NA
Dec 13 22° 37° -9° (1958) 63° (1975) 0.08" NA
Dec 14 21° 36° -8° (1989) 65° (1975) 0.08" NA
Dec 15 21° 36° -12° (1989) 61° (1971) 0.08" NA
Dec 16 21° 36° -14° (1951) 62° (1984) 0.08" NA
Dec 17 20° 35° -6° (1989) 57° (1984) 0.08" NA
Dec 18 20° 35° -12° (1985) 60° (1962) 0.08" NA
Dec 19 20° 35° -16° (1983) 57° (1957) 0.08" NA
Dec 20 19° 35° -12° (1963) 58° (1988) 0.08" NA
Dec 21 19° 34° -16° (1963) 62° (1967) 0.08" NA
Dec 22 19° 34° -26° (1989) 58° (1957) 0.07" NA
Dec 23 18° 34° -22° (1989) 62° (1982) 0.07" NA
Dec 24 18° 34° -19° (1983) 61° (1955) 0.07" NA
Dec 25 18° 33° -13° (2000) 61° (1982) 0.07" NA
Dec 26 18° 33° -9° (1962) 54° (1959) 0.07" NA
Dec 27 17° 33° -7° (1951) 59° (1971) 0.07" NA
Dec 28 17° 33° -9° (1961) 67° (1984) 0.07" NA
Dec 29 17° 33° -9° (1981) 67° (1984) 0.07" NA
Dec 30 16° 32° -11° (1983) 61° (2002) 0.07" NA
Dec 31 16° 32° -11° (1976) 60° (1951) 0.06" NA
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