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
Jan 1 15° 31° -14° (1977) 59° (2007) 0.06" NA
Jan 2 14° 31° -15° (1979) 52° (2004) 0.06" NA
Jan 3 14° 30° -15° (1979) 62° (2000) 0.06" NA
Jan 4 14° 30° -7° (1979) 59° (1998) 0.05" NA
Jan 5 14° 30° -17° (1999) 65° (1997) 0.05" NA
Jan 6 14° 30° -17° (1999) 55° (1998) 0.05" NA
Jan 7 13° 30° -14° (1988) 52° (1998) 0.05" NA
Jan 8 13° 30° -13° (1988) 55° (1989) 0.05" NA
Jan 9 13° 30° -11° (1976) 56° (2003) 0.05" NA
Jan 10 13° 30° -19° (1982) 56° (2002) 0.05" NA
Jan 11 13° 30° -22° (1982) 52° (1980) 0.05" NA
Jan 12 13° 29° -14° (1977) 54° (1980) 0.05" NA
Jan 13 13° 29° -10° (1997) 55° (2006) 0.05" NA
Jan 14 13° 29° -6° (1994) 46° (2001) 0.05" NA
Jan 15 13° 29° -20° (1979) 45° (1987) 0.05" NA
Jan 16 13° 29° -19° (1977) 52° (1990) 0.05" NA
Jan 17 13° 29° -19° (1977) 56° (1990) 0.05" NA
Jan 18 13° 29° -20° (1994) 59° (1996) 0.05" NA
Jan 19 13° 29° -21° (1994) 60° (1996) 0.05" NA
Jan 20 13° 30° -26° (1985) 57° (2006) 0.05" NA
Jan 21 13° 30° -26° (1985) 43° (1981) 0.05" NA
Jan 22 13° 30° -14° (1984) 55° (1986) 0.05" NA
Jan 23 13° 30° -4° (1978) 56° (2002) 0.05" NA
Jan 24 13° 30° -6° (1982) 51° (1990) 0.05" NA
Jan 25 14° 30° -6° (1987) 51° (1981) 0.05" NA
Jan 26 14° 30° -12° (1982) 52° (2002) 0.05" NA
Jan 27 14° 30° -12° (1982) 56° (2002) 0.05" NA
Jan 28 14° 30° -15° (1977) 61° (2002) 0.05" NA
Jan 29 14° 31° -15° (1977) 59° (2002) 0.05" NA
Jan 30 14° 31° -8° (1978) 51° (2006) 0.05" NA
Jan 31 15° 31° -9° (1996) 55° (1988) 0.05" NA
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