Cooksville, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 16° 33° -23° (1999) 67° (1967) 1.87" 4.9"
February 20° 38° -19° (1996) 73° (1996) 1.61" 5.1"
March 30° 51° -6° (2002) 85° (1986) 3.04" 1.8"
April 41° 64° 7° (1982) 91° (1986) 3.32" 0.8"
May 51° 75° 22° (1966) 95° (1991) 4.02" 0"
June 61° 83° 36° (1972) 102° (1988) 3.71" 0"
July 64° 86° 45° (1988) 103° (1954) 3.55" 0"
August 62° 84° 37° (1963) 103° (1988) 3.05" 0"
September 54° 78° 24° (1974) 100° (1953) 2.86" 0"
October 43° 66° 17° (1981) 92° (1953) 3.08" 0"
November 33° 51° -4° (1955) 79° (2000) 3.07" 0.8"
December 21° 36° -26° (1989) 70° (1982) 2.41" 6.3"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 46° 70° 29° (1963) 89° (1952) 0.12" 0"
May 2 46° 71° 28° (1966) 88° (1968) 0.12" 0"
May 3 47° 71° 28° (2005) 89° (1959) 0.12" 0"
May 4 47° 71° 28° (1954) 91° (1955) 0.12" 0"
May 5 47° 72° 32° (1954) 93° (1959) 0.12" 0"
May 6 48° 72° 30° (1989) 90° (1959) 0.13" 0"
May 7 48° 72° 26° (1989) 89° (2007) 0.12" 0"
May 8 48° 73° 32° (1956) 88° (1963) 0.12" 0"
May 9 49° 73° 30° (1966) 89° (1963) 0.13" 0"
May 10 49° 73° 22° (1966) 88° (1963) 0.13" 0"
May 11 49° 73° 35° (1989) 88° (1982) 0.13" 0"
May 12 50° 74° 31° (1981) 92° (1956) 0.13" 0"
May 13 50° 74° 34° (1954) 92° (1956) 0.14" 0"
May 14 50° 74° 35° (1996) 91° (1982) 0.13" 0"
May 15 51° 75° 34° (1973) 89° (1977) 0.13" 0"
May 16 51° 75° 34° (1983) 92° (2001) 0.14" 0"
May 17 51° 75° 37° (2002) 91° (1962) 0.13" 0"
May 18 52° 76° 33° (2002) 92° (1964) 0.13" 0"
May 19 52° 76° 38° (1961) 95° (1975) 0.14" 0"
May 20 52° 76° 30° (1954) 91° (1977) 0.14" 0"
May 21 53° 76° 31° (2002) 93° (1987) 0.13" 0"
May 22 53° 77° 34° (1961) 92° (1975) 0.14" 0"
May 23 53° 77° 32° (1963) 94° (1975) 0.14" 0"
May 24 54° 77° 34° (1956) 93° (2010) 0.14" 0"
May 25 54° 78° 36° (1992) 93° (1967) 0.13" 0"
May 26 54° 78° 33° (1961) 93° (1985) 0.13" 0"
May 27 55° 78° 34° (1961) 93° (1985) 0.13" 0"
May 28 55° 79° 37° (1971) 95° (1991) 0.13" 0"
May 29 55° 79° 26° (1965) 94° (2006) 0.13" 0"
May 30 56° 79° 37° (1964) 91° (1988) 0.12" 0"
May 31 56° 79° 40° (1966) 92° (1988) 0.13" 0"
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