DeKalb, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 10° 27° -27° (1985) 63° (1967) 1.54" 9.1"
February 16° 32° -23° (1996) 69° (2000) 1.4" 7.1"
March 26° 44° -13° (2002) 84° (1986) 2.46" 4.6"
April 37° 58° 8° (1982) 92° (1986) 3.52" 1.4"
May 48° 70° 24° (1989) 95° (1985) 4.21" 0.1"
June 58° 80° 34° (1993) 101° (1988) 4.49" 0"
July 63° 84° 43° (1967) 102° (1995) 4.22" 0"
August 61° 81° 39° (1986) 103° (1988) 4.48" 0"
September 51° 74° 27° (1991) 94° (1990) 3.51" 0"
October 40° 62° 13° (1988) 89° (2007) 2.6" 0.2"
November 28° 45° -8° (1976) 76° (2000) 2.82" 2.1"
December 17° 32° -22° (1983) 66° (1970) 2.13" 8.9"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Oct 1 46° 69° 30° (1993) 88° (1971) 0.09" NA
Oct 2 45° 69° 25° (1974) 89° (1976) 0.09" NA
Oct 3 45° 69° 28° (1974) 88° (1976) 0.09" NA
Oct 4 44° 68° 27° (1989) 87° (1997) 0.09" NA
Oct 5 44° 68° 26° (1989) 85° (1990) 0.09" NA
Oct 6 44° 67° 26° (1988) 88° (1997) 0.09" NA
Oct 7 43° 67° 26° (1988) 87° (2007) 0.09" NA
Oct 8 43° 67° 22° (1987) 89° (2007) 0.09" NA
Oct 9 43° 66° 23° (1987) 86° (2007) 0.08" NA
Oct 10 42° 66° 28° (1993) 81° (1973) 0.08" NA
Oct 11 42° 65° 26° (1987) 81° (1973) 0.08" NA
Oct 12 41° 65° 22° (1988) 79° (1973) 0.08" NA
Oct 13 41° 64° 21° (1988) 86° (1975) 0.08" NA
Oct 14 41° 64° 21° (1988) 85° (1975) 0.08" NA
Oct 15 40° 63° 28° (2006) 82° (1989) 0.08" NA
Oct 16 40° 63° 27° (1970) 82° (1999) 0.08" NA
Oct 17 40° 62° 25° (1992) 78° (1998) 0.08" NA
Oct 18 39° 62° 21° (1976) 76° (1971) 0.08" NA
Oct 19 39° 61° 18° (1992) 76° (2007) 0.08" NA
Oct 20 38° 61° 18° (1992) 79° (1971) 0.08" NA
Oct 21 38° 60° 28° (1974) 82° (1979) 0.08" NA
Oct 22 38° 60° 21° (1976) 82° (1979) 0.08" NA
Oct 23 37° 59° 22° (1969) 78° (1975) 0.08" NA
Oct 24 37° 59° 18° (1981) 79° (1973) 0.08" NA
Oct 25 36° 58° 22° (1987) 76° (1989) 0.08" NA
Oct 26 36° 57° 21° (1979) 77° (1989) 0.08" NA
Oct 27 36° 57° 25° (1988) 76° (2000) 0.08" NA
Oct 28 35° 56° 19° (1976) 73° (1989) 0.09" NA
Oct 29 35° 56° 23° (1980) 80° (1999) 0.09" NA
Oct 30 35° 55° 13° (1988) 78° (1971) 0.09" NA
Oct 31 34° 54° 17° (1988) 75° (1974) 0.09" NA
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