Forreston, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 11° 28° -27° (1985) 61° (2002) 1.37" 9"
February 16° 34° -27° (1996) 65° (1999) 1.58" 6.5"
March 26° 46° -8° (2002) 85° (1986) 2.08" 3.5"
April 37° 60° 9° (1982) 92° (1980) 3.3" 0.8"
May 48° 71° 25° (2005) 95° (1985) 3.99" 0"
June 58° 80° 38° (1993) 100° (1988) 4.61" 0"
July 62° 84° 46° (1979) 101° (1988) 3.94" 0"
August 60° 82° 40° (1986) 101° (1988) 4.29" 0"
September 50° 74° 28° (1984) 96° (1985) 3.66" 0"
October 39° 62° 15° (1988) 90° (1997) 2.88" 0"
November 29° 47° -5° (1977) 77° (2000) 2.66" 1.8"
December 16° 32° -23° (2000) 67° (2001) 1.76" 9.7"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Oct 1 43° 68° 25° (2003) 87° (1982) 0.11" 0"
Oct 2 43° 68° 25° (1974) 87° (1976) 0.11" 0"
Oct 3 43° 67° 23° (1974) 86° (1983) 0.1" 0"
Oct 4 42° 67° 27° (1989) 90° (1997) 0.11" 0"
Oct 5 42° 67° 27° (1980) 82° (2007) 0.1" 0"
Oct 6 41° 66° 25° (2004) 86° (1997) 0.1" 0"
Oct 7 41° 66° 27° (2001) 87° (2007) 0.1" 0"
Oct 8 41° 65° 24° (1987) 87° (2007) 0.1" 0"
Oct 9 40° 65° 24° (1987) 83° (2007) 0.09" 0"
Oct 10 40° 65° 27° (2000) 90° (2010) 0.1" 0"
Oct 11 40° 64° 24° (1987) 84° (2010) 0.09" 0"
Oct 12 39° 64° 24° (1987) 84° (2010) 0.09" 0"
Oct 13 39° 63° 24° (1988) 83° (2008) 0.09" 0"
Oct 14 39° 63° 24° (1988) 88° (1975) 0.09" 0"
Oct 15 39° 63° 25° (2006) 81° (1975) 0.09" 0"
Oct 16 38° 62° 26° (1991) 82° (1989) 0.09" 0"
Oct 17 38° 62° 25° (1992) 75° (2010) 0.08" 0"
Oct 18 38° 61° 23° (1976) 77° (1995) 0.1" 0"
Oct 19 38° 61° 20° (1992) 76° (2005) 0.09" 0"
Oct 20 37° 60° 20° (1992) 81° (2003) 0.09" 0"
Oct 21 37° 60° 27° (1974) 82° (2003) 0.09" 0"
Oct 22 37° 60° 25° (1976) 82° (1979) 0.09" 0"
Oct 23 37° 59° 24° (1999) 80° (1975) 0.09" 0"
Oct 24 36° 59° 20° (1981) 78° (1975) 0.08" 0"
Oct 25 36° 58° 23° (1987) 79° (1973) 0.09" 0"
Oct 26 36° 58° 22° (1979) 78° (1989) 0.08" 0"
Oct 27 36° 57° 23° (1976) 75° (1989) 0.09" 0"
Oct 28 35° 57° 20° (1976) 73° (1989) 0.09" 0"
Oct 29 35° 56° 20° (1980) 76° (1999) 0.09" 0"
Oct 30 35° 56° 15° (1988) 78° (2004) 0.08" 0"
Oct 31 34° 56° 17° (1988) 74° (1981) 0.09" 0"
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