Custer Park, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 13° 30° -26° (1985) 65° (1997) 1.58" NA
February 19° 35° -20° (1979) 73° (2000) 1.64" NA
March 28° 47° -7° (2002) 86° (1986) 2.46" NA
April 37° 60° 11° (1982) 92° (1986) 3.75" NA
May 48° 72° 30° (2005) 93° (2006) 3.87" NA
June 58° 81° 35° (1985) 104° (1988) 4.22" NA
July 63° 85° 47° (1983) 103° (1995) 4.34" NA
August 61° 82° 39° (1986) 102° (1988) 3.82" NA
September 53° 76° 32° (1983) 97° (1978) 3.14" NA
October 41° 64° 17° (1976) 88° (2007) 2.7" NA
November 31° 48° -2° (1977) 78° (1978) 3" NA
December 20° 35° -20° (1983) 70° (1982) 2.44" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Jul 1 62° 84° 52° (1976) 93° (1991) 0.15" NA
Jul 2 62° 84° 53° (1995) 92° (1991) 0.15" NA
Jul 3 62° 84° 50° (2001) 94° (2003) 0.15" NA
Jul 4 62° 84° 54° (1988) 93° (2002) 0.14" NA
Jul 5 62° 84° 52° (1997) 96° (1977) 0.14" NA
Jul 6 62° 84° 47° (1983) 97° (1988) 0.14" NA
Jul 7 63° 84° 48° (1983) 97° (1988) 0.14" NA
Jul 8 63° 85° 51° (1983) 98° (1980) 0.14" NA
Jul 9 63° 85° 55° (1984) 97° (1988) 0.14" NA
Jul 10 63° 85° 54° (1996) 97° (1984) 0.14" NA
Jul 11 63° 85° 52° (1978) 99° (1976) 0.14" NA
Jul 12 63° 85° 55° (1978) 96° (1976) 0.14" NA
Jul 13 63° 85° 54° (1976) 98° (1981) 0.14" NA
Jul 14 63° 85° 55° (2005) 103° (1995) 0.14" NA
Jul 15 63° 85° 52° (1989) 101° (1976) 0.14" NA
Jul 16 63° 85° 54° (1987) 100° (1988) 0.14" NA
Jul 17 63° 85° 52° (1976) 94° (1988) 0.14" NA
Jul 18 63° 85° 50° (1979) 96° (1986) 0.14" NA
Jul 19 63° 85° 53° (1984) 98° (1991) 0.14" NA
Jul 20 63° 85° 55° (1984) 96° (1983) 0.14" NA
Jul 21 63° 85° 57° (2005) 98° (1980) 0.14" NA
Jul 22 63° 85° 54° (1981) 100° (1991) 0.14" NA
Jul 23 63° 85° 55° (1985) 101° (1983) 0.14" NA
Jul 24 63° 85° 54° (2003) 94° (1999) 0.14" NA
Jul 25 63° 85° 54° (2003) 99° (1986) 0.14" NA
Jul 26 63° 85° 53° (1977) 95° (1987) 0.14" NA
Jul 27 63° 84° 50° (1977) 98° (1997) 0.14" NA
Jul 28 63° 84° 55° (1977) 94° (1988) 0.14" NA
Jul 29 63° 84° 51° (1981) 100° (1983) 0.13" NA
Jul 30 63° 84° 53° (1981) 97° (1999) 0.13" NA
Jul 31 63° 84° 55° (1978) 101° (1999) 0.13" NA
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