Somonauk, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 11° 27° -25° (1999) 64° (1967) 1.35" 9.3"
February 15° 32° -33° (1996) 68° (1976) 1.62" 6.7"
March 26° 44° -16° (2002) 83° (1986) 2.17" 3.8"
April 36° 59° 9° (1982) 92° (2002) 3.11" 0.5"
May 47° 69° 24° (2005) 94° (1975) 4.46" 0"
June 57° 79° 36° (1972) 101° (1988) 4.36" 0"
July 61° 82° 41° (2000) 101° (1966) 4.13" 0"
August 59° 80° 37° (1986) 99° (1988) 4.15" 0"
September 51° 74° 29° (1995) 93° (1978) 3.45" 0"
October 39° 62° 16° (1962) 90° (2007) 2.79" 0.2"
November 28° 46° -7° (1976) 76° (1968) 2.98" 1.1"
December 15° 31° -23° (1983) 65° (2001) 2.02" 8.6"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 56° 78° 42° (1967) 90° (2000) 0.13" 0"
Sep 2 56° 78° 45° (1967) 91° (2000) 0.13" 0"
Sep 3 56° 78° 41° (1974) 88° (1964) 0.13" 0"
Sep 4 55° 77° 40° (1974) 90° (1964) 0.12" 0"
Sep 5 55° 77° 40° (1962) 89° (1990) 0.12" 0"
Sep 6 55° 77° 40° (2000) 90° (1990) 0.12" 0"
Sep 7 54° 77° 39° (1986) 92° (1990) 0.12" 0"
Sep 8 54° 76° 40° (1986) 91° (1985) 0.12" 0"
Sep 9 53° 76° 42° (2008) 93° (1978) 0.12" 0"
Sep 10 53° 76° 43° (1969) 91° (1971) 0.12" 0"
Sep 11 53° 75° 42° (1995) 92° (2005) 0.11" 0"
Sep 12 52° 75° 38° (1964) 91° (2000) 0.11" 0"
Sep 13 52° 75° 36° (1975) 89° (1962) 0.12" 0"
Sep 14 51° 74° 37° (1974) 91° (2005) 0.11" 0"
Sep 15 51° 74° 32° (2007) 92° (1971) 0.12" 0"
Sep 16 50° 74° 35° (2007) 88° (1991) 0.11" 0"
Sep 17 50° 73° 39° (1999) 83° (1992) 0.12" 0"
Sep 18 50° 73° 39° (1973) 90° (1988) 0.11" 0"
Sep 19 49° 73° 36° (1991) 88° (2007) 0.12" 0"
Sep 20 49° 72° 31° (1962) 89° (1978) 0.12" 0"
Sep 21 48° 72° 34° (1991) 85° (1970) 0.12" 0"
Sep 22 48° 72° 30° (1974) 88° (2010) 0.11" 0"
Sep 23 47° 71° 29° (1995) 88° (1988) 0.12" 0"
Sep 24 47° 71° 30° (1976) 88° (2010) 0.11" 0"
Sep 25 46° 70° 33° (2001) 90° (2007) 0.11" 0"
Sep 26 46° 70° 33° (2001) 87° (1986) 0.11" 0"
Sep 27 46° 70° 33° (1975) 88° (2008) 0.11" 0"
Sep 28 45° 69° 32° (1975) 87° (1998) 0.1" 0"
Sep 29 45° 69° 34° (1967) 86° (1971) 0.09" 0"
Sep 30 44° 68° 33° (1993) 86° (2002) 0.09" 0"
Advertisements