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
Aug 1 63° 83° 48° (1990) 97° (2006) 0.14" NA
Aug 2 63° 83° 48° (1976) 98° (1988) 0.14" NA
Aug 3 63° 83° 46° (1976) 99° (1988) 0.14" NA
Aug 4 63° 83° 46° (1972) 97° (1988) 0.14" NA
Aug 5 62° 83° 47° (1974) 98° (1988) 0.14" NA
Aug 6 62° 83° 47° (1994) 93° (1984) 0.14" NA
Aug 7 62° 83° 46° (1990) 93° (1983) 0.14" NA
Aug 8 62° 83° 46° (1976) 96° (1983) 0.15" NA
Aug 9 62° 82° 47° (1972) 98° (1988) 0.15" NA
Aug 10 62° 82° 50° (1972) 95° (2001) 0.15" NA
Aug 11 62° 82° 46° (1967) 92° (1983) 0.15" NA
Aug 12 62° 82° 46° (1967) 95° (1995) 0.15" NA
Aug 13 61° 82° 48° (2004) 97° (1995) 0.15" NA
Aug 14 61° 82° 50° (1992) 95° (1995) 0.15" NA
Aug 15 61° 82° 45° (1979) 94° (1995) 0.15" NA
Aug 16 61° 82° 42° (1992) 99° (1988) 0.15" NA
Aug 17 61° 81° 44° (1992) 103° (1988) 0.15" NA
Aug 18 60° 81° 47° (1981) 102° (1988) 0.15" NA
Aug 19 60° 81° 48° (1981) 98° (1983) 0.15" NA
Aug 20 60° 81° 48° (1992) 96° (1983) 0.15" NA
Aug 21 60° 81° 48° (1992) 94° (1983) 0.15" NA
Aug 22 60° 80° 46° (1969) 97° (2003) 0.14" NA
Aug 23 59° 80° 47° (1966) 91° (1968) 0.14" NA
Aug 24 59° 80° 46° (1987) 92° (1991) 0.14" NA
Aug 25 59° 80° 45° (1977) 90° (1970) 0.14" NA
Aug 26 58° 80° 53° (1988) 95° (1991) 0.14" NA
Aug 27 58° 79° 44° (1968) 95° (2003) 0.14" NA
Aug 28 58° 79° 39° (1986) 97° (1991) 0.14" NA
Aug 29 58° 79° 40° (1986) 96° (1984) 0.14" NA
Aug 30 57° 79° 45° (1986) 96° (1984) 0.14" NA
Aug 31 57° 79° 40° (1967) 91° (1995) 0.14" NA
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