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
Mar 1 21° 38° 5° (1978) 65° (2000) 0.06" NA
Mar 2 21° 38° 0° (1980) 66° (1992) 0.06" NA
Mar 3 21° 39° 0° (1996) 72° (1974) 0.06" NA
Mar 4 22° 39° -13° (2002) 70° (1983) 0.06" NA
Mar 5 22° 40° -9° (2002) 71° (1983) 0.07" NA
Mar 6 23° 40° 5° (1982) 69° (2000) 0.07" NA
Mar 7 23° 40° 1° (1996) 70° (2000) 0.07" NA
Mar 8 23° 41° -4° (1996) 77° (2000) 0.07" NA
Mar 9 24° 41° -3° (1996) 73° (2000) 0.07" NA
Mar 10 24° 42° -2° (2003) 66° (1977) 0.07" NA
Mar 11 24° 42° -2° (2003) 69° (1972) 0.07" NA
Mar 12 25° 43° 6° (1993) 72° (1990) 0.07" NA
Mar 13 25° 43° 7° (1998) 77° (1990) 0.07" NA
Mar 14 26° 44° 6° (1993) 72° (2007) 0.08" NA
Mar 15 26° 44° 7° (1979) 74° (1995) 0.08" NA
Mar 16 26° 44° 10° (1997) 74° (1995) 0.08" NA
Mar 17 27° 45° 10° (1967) 71° (1966) 0.08" NA
Mar 18 27° 45° 9° (1967) 73° (2003) 0.08" NA
Mar 19 27° 46° 14° (1989) 74° (1976) 0.08" NA
Mar 20 28° 46° 10° (1986) 71° (1976) 0.08" NA
Mar 21 28° 47° 11° (1986) 71° (1991) 0.09" NA
Mar 22 28° 47° 12° (2002) 70° (1997) 0.09" NA
Mar 23 29° 48° 12° (1974) 68° (1988) 0.09" NA
Mar 24 29° 48° 3° (1974) 74° (1994) 0.09" NA
Mar 25 29° 49° 10° (1974) 71° (1967) 0.09" NA
Mar 26 30° 49° 13° (1996) 77° (2007) 0.09" NA
Mar 27 30° 49° 9° (1969) 77° (2007) 0.09" NA
Mar 28 31° 50° 8° (1970) 77° (1968) 0.1" NA
Mar 29 31° 50° 12° (1969) 76° (1986) 0.1" NA
Mar 30 31° 51° 8° (1969) 84° (1986) 0.1" NA
Mar 31 31° 51° 10° (1969) 81° (1981) 0.1" NA
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