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
Apr 1 32° 52° 16° (1987) 84° (1986) 0.1" NA
Apr 2 32° 52° 21° (1992) 81° (2003) 0.1" NA
Apr 3 32° 53° 15° (1987) 79° (2003) 0.1" NA
Apr 4 33° 53° 13° (1975) 77° (1996) 0.11" NA
Apr 5 33° 54° 17° (1975) 77° (1991) 0.11" NA
Apr 6 33° 54° 12° (1982) 82° (1988) 0.11" NA
Apr 7 34° 54° 8° (1982) 78° (1991) 0.11" NA
Apr 8 34° 55° 12° (1972) 79° (2001) 0.11" NA
Apr 9 34° 55° 18° (1997) 77° (2001) 0.11" NA
Apr 10 35° 56° 19° (1997) 83° (1977) 0.11" NA
Apr 11 35° 56° 21° (1989) 83° (1977) 0.11" NA
Apr 12 36° 57° 23° (1976) 82° (1971) 0.12" NA
Apr 13 36° 57° 20° (1989) 79° (1977) 0.12" NA
Apr 14 36° 58° 22° (1989) 84° (2006) 0.12" NA
Apr 15 37° 58° 29° (1986) 85° (2003) 0.12" NA
Apr 16 37° 58° 28° (1980) 87° (2002) 0.12" NA
Apr 17 37° 59° 28° (1997) 87° (2002) 0.12" NA
Apr 18 38° 59° 21° (1990) 87° (1985) 0.12" NA
Apr 19 38° 60° 22° (1983) 90° (2002) 0.12" NA
Apr 20 38° 60° 28° (1988) 84° (1985) 0.12" NA
Apr 21 39° 60° 22° (1988) 89° (1987) 0.12" NA
Apr 22 39° 61° 23° (1986) 91° (1980) 0.12" NA
Apr 23 39° 61° 28° (1967) 91° (1980) 0.12" NA
Apr 24 40° 62° 24° (1967) 81° (1990) 0.12" NA
Apr 25 40° 62° 28° (1967) 85° (1990) 0.13" NA
Apr 26 41° 63° 30° (1972) 92° (1986) 0.13" NA
Apr 27 41° 63° 28° (1976) 91° (1986) 0.13" NA
Apr 28 41° 63° 25° (1992) 88° (1986) 0.13" NA
Apr 29 42° 64° 27° (1977) 87° (1970) 0.13" NA
Apr 30 42° 64° 33° (1971) 87° (1970) 0.13" NA
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