Custer Park, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 17° 31° -26° (1985) 65° (1997) 1.8" NA
February 21° 36° -20° (1979) 73° (2000) 1.79" NA
March 29° 47° -7° (2002) 86° (1986) 2.25" NA
April 39° 61° 11° (1982) 92° (1986) 3.49" NA
May 49° 71° 30° (2005) 93° (2006) 4.08" NA
June 60° 81° 35° (1985) 104° (1988) 3.88" NA
July 64° 84° 47° (1983) 103° (1995) 4.33" NA
August 63° 82° 39° (1986) 102° (1988) 4.16" NA
September 55° 76° 32° (1983) 97° (1978) 3.01" NA
October 43° 64° 17° (1976) 88° (2007) 2.84" NA
November 33° 49° -2° (1977) 78° (1978) 3.06" NA
December 21° 35° -20° (1983) 70° (1982) 2.2" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Feb 1 17° 33° -11° (1996) 64° (1989) 0.05" NA
Feb 2 18° 33° -14° (1996) 51° (1986) 0.04" NA
Feb 3 18° 33° -19° (1996) 54° (1992) 0.05" NA
Feb 4 18° 33° -19° (1996) 54° (1992) 0.05" NA
Feb 5 18° 33° -20° (1979) 54° (2005) 0.05" NA
Feb 6 18° 34° -20° (1979) 56° (2005) 0.05" NA
Feb 7 18° 34° -16° (1982) 51° (1990) 0.05" NA
Feb 8 19° 34° -8° (2007) 62° (2009) 0.05" NA
Feb 9 19° 34° -10° (1979) 63° (2001) 0.06" NA
Feb 10 19° 34° -13° (1982) 56° (2001) 0.05" NA
Feb 11 19° 35° -12° (1982) 63° (1976) 0.06" NA
Feb 12 20° 35° -9° (1981) 69° (1999) 0.06" NA
Feb 13 20° 35° -8° (1988) 57° (1990) 0.06" NA
Feb 14 20° 36° -8° (1988) 54° (1990) 0.06" NA
Feb 15 20° 36° -7° (1986) 56° (1976) 0.06" NA
Feb 16 21° 36° -6° (1986) 65° (1976) 0.06" NA
Feb 17 21° 37° -8° (1980) 53° (1976) 0.06" NA
Feb 18 21° 37° -6° (1980) 54° (1994) 0.07" NA
Feb 19 21° 37° -6° (2006) 59° (1981) 0.06" NA
Feb 20 22° 38° -4° (1979) 60° (1994) 0.07" NA
Feb 21 22° 38° 5° (1978) 63° (1983) 0.07" NA
Feb 22 22° 38° -3° (1978) 58° (1983) 0.06" NA
Feb 23 23° 39° 0° (1978) 60° (1984) 0.08" NA
Feb 24 23° 39° -5° (1993) 65° (2000) 0.07" NA
Feb 25 23° 39° -5° (1993) 64° (1976) 0.08" NA
Feb 26 24° 40° 2° (1980) 73° (2000) 0.08" NA
Feb 27 24° 40° 1° (1994) 63° (1998) 0.07" NA
Feb 28 24° 41° 1° (1994) 69° (1976) 0.08" NA
Feb 29 24° 41° 1° (1980) 60° (2000) 0.08" NA
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