DeKalb, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 13° 28° -27° (1985) 63° (1967) 1.48" 10.1"
February 17° 33° -23° (1996) 69° (2000) 1.61" 7.3"
March 27° 45° -13° (2002) 84° (1986) 2.27" 4.3"
April 38° 59° 8° (1982) 92° (1986) 3.27" 0.9"
May 49° 70° 24° (1989) 95° (1985) 4.57" 0"
June 59° 80° 34° (1993) 101° (1988) 4.14" 0"
July 63° 83° 43° (1967) 102° (1995) 4.37" 0"
August 61° 81° 39° (1986) 103° (1988) 4.36" 0"
September 52° 75° 27° (1991) 94° (1990) 3.25" 0"
October 40° 62° 13° (1988) 89° (2007) 2.88" 0.1"
November 30° 47° -8° (1976) 76° (2000) 2.7" 1.1"
December 17° 32° -22° (1983) 66° (1970) 2.15" 8.1"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Aug 1 62° 82° 48° (1990) 97° (2006) 0.17" 0"
Aug 2 62° 82° 48° (1976) 98° (1988) 0.16" 0"
Aug 3 62° 82° 46° (1976) 99° (1988) 0.15" 0"
Aug 4 62° 82° 46° (1972) 97° (1988) 0.15" 0"
Aug 5 62° 82° 47° (1974) 98° (1988) 0.15" 0"
Aug 6 62° 82° 47° (1994) 93° (1984) 0.14" 0"
Aug 7 62° 82° 46° (1990) 93° (1983) 0.14" 0"
Aug 8 62° 82° 46° (1976) 96° (1983) 0.15" 0"
Aug 9 62° 82° 47° (1972) 98° (1988) 0.14" 0"
Aug 10 62° 82° 50° (1972) 96° (2005) 0.15" 0"
Aug 11 62° 82° 46° (1967) 92° (1983) 0.15" 0"
Aug 12 62° 82° 46° (1967) 95° (1995) 0.15" 0"
Aug 13 62° 82° 48° (2004) 97° (1995) 0.15" 0"
Aug 14 62° 82° 50° (1992) 95° (1995) 0.16" 0"
Aug 15 61° 82° 45° (1979) 94° (1995) 0.15" 0"
Aug 16 61° 82° 42° (1992) 99° (1988) 0.16" 0"
Aug 17 61° 81° 44° (1992) 103° (1988) 0.15" 0"
Aug 18 61° 81° 47° (1981) 102° (1988) 0.15" 0"
Aug 19 61° 81° 48° (1981) 98° (1983) 0.14" 0"
Aug 20 61° 81° 48° (1992) 96° (1983) 0.13" 0"
Aug 21 61° 81° 48° (1992) 94° (1983) 0.13" 0"
Aug 22 61° 81° 46° (1969) 97° (2003) 0.13" 0"
Aug 23 60° 81° 47° (1966) 91° (1968) 0.13" 0"
Aug 24 60° 81° 46° (1987) 92° (1991) 0.12" 0"
Aug 25 60° 81° 45° (1977) 90° (1970) 0.13" 0"
Aug 26 60° 81° 53° (1988) 95° (1991) 0.13" 0"
Aug 27 60° 80° 44° (1968) 95° (2003) 0.13" 0"
Aug 28 59° 80° 39° (1986) 97° (1991) 0.12" 0"
Aug 29 59° 80° 40° (1986) 96° (1984) 0.11" 0"
Aug 30 59° 80° 45° (1986) 96° (1984) 0.12" 0"
Aug 31 59° 80° 40° (1967) 91° (1995) 0.12" 0"
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