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
Mar 1 23° 40° 1° (1980) 65° (2000) 0.06" NA
Mar 2 23° 41° 1° (1980) 69° (1992) 0.06" NA
Mar 3 24° 41° 1° (1980) 70° (1992) 0.06" NA
Mar 4 24° 42° -7° (2002) 72° (1983) 0.07" NA
Mar 5 24° 42° -7° (2002) 73° (1983) 0.07" NA
Mar 6 25° 43° 1° (1978) 74° (1983) 0.07" NA
Mar 7 25° 43° 7° (1996) 71° (2000) 0.07" NA
Mar 8 25° 43° 1° (1996) 79° (1987) 0.07" NA
Mar 9 25° 44° 1° (1996) 79° (2000) 0.07" NA
Mar 10 26° 44° 5° (1984) 68° (1977) 0.07" NA
Mar 11 26° 45° 3° (1979) 66° (1977) 0.07" NA
Mar 12 26° 45° 3° (1979) 75° (1990) 0.07" NA
Mar 13 27° 46° 4° (1998) 78° (1990) 0.07" NA
Mar 14 27° 46° 9° (1993) 74° (2007) 0.07" NA
Mar 15 27° 46° 7° (1979) 75° (1995) 0.08" NA
Mar 16 28° 47° 9° (1979) 74° (1995) 0.08" NA
Mar 17 28° 47° 13° (1997) 75° (2003) 0.08" NA
Mar 18 28° 48° 15° (1993) 72° (2003) 0.08" NA
Mar 19 29° 48° 16° (1993) 70° (1995) 0.08" NA
Mar 20 29° 49° 10° (1986) 74° (1976) 0.08" NA
Mar 21 29° 49° 10° (1986) 68° (1976) 0.08" NA
Mar 22 29° 49° 12° (1983) 74° (1997) 0.09" NA
Mar 23 30° 50° 10° (1983) 73° (1979) 0.09" NA
Mar 24 30° 50° 8° (1983) 76° (1994) 0.09" NA
Mar 25 30° 51° 18° (1979) 77° (2003) 0.09" NA
Mar 26 31° 51° 15° (1996) 77° (2007) 0.09" NA
Mar 27 31° 51° 13° (1996) 77° (2007) 0.1" NA
Mar 28 31° 52° 14° (1996) 78° (2007) 0.1" NA
Mar 29 32° 52° 25° (1982) 76° (1986) 0.1" NA
Mar 30 32° 53° 24° (1987) 86° (1986) 0.1" NA
Mar 31 32° 53° 18° (1987) 84° (1986) 0.1" NA
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