Granite City, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 24° 40° -10° (1977) 74° (1970) 2.45" NA
February 28° 45° -13° (1996) 79° (1976) 2.48" NA
March 37° 55° 2° (1978) 88° (1997) 3.36" NA
April 47° 67° 20° (1975) 93° (2006) 4.1" NA
May 57° 77° 34° (1978) 95° (1996) 4.8" NA
June 67° 85° 40° (1976) 102° (1988) 4.34" NA
July 71° 89° 53° (1975) 105° (1999) 4.19" NA
August 70° 88° 51° (1992) 104° (2003) 3.41" NA
September 61° 81° 35° (1969) 99° (1990) 3.38" NA
October 50° 69° 28° (1987) 94° (2006) 3.43" NA
November 39° 56° 7° (1976) 83° (2003) 4.22" NA
December 28° 43° -17° (1989) 78° (1970) 2.96" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Oct 1 55° 75° 40° (2003) 93° (1971) 0.1" NA
Oct 2 54° 74° 36° (1974) 91° (1971) 0.1" NA
Oct 3 54° 74° 36° (1974) 92° (2002) 0.11" NA
Oct 4 53° 74° 40° (2010) 94° (2006) 0.11" NA
Oct 5 53° 73° 38° (1999) 89° (2007) 0.11" NA
Oct 6 53° 73° 37° (1988) 91° (2007) 0.1" NA
Oct 7 52° 72° 38° (1988) 89° (2007) 0.11" NA
Oct 8 52° 72° 39° (1974) 92° (2007) 0.1" NA
Oct 9 52° 72° 39° (1996) 88° (2007) 0.1" NA
Oct 10 51° 71° 34° (1993) 88° (2010) 0.1" NA
Oct 11 51° 71° 35° (1990) 87° (2010) 0.1" NA
Oct 12 51° 70° 28° (1987) 86° (1997) 0.09" NA
Oct 13 50° 70° 31° (1987) 89° (1975) 0.1" NA
Oct 14 50° 70° 34° (2006) 90° (1975) 0.1" NA
Oct 15 50° 69° 38° (1977) 88° (1975) 0.09" NA
Oct 16 49° 69° 38° (1976) 87° (1989) 0.1" NA
Oct 17 49° 69° 37° (1969) 82° (1990) 0.1" NA
Oct 18 49° 68° 33° (1976) 85° (1988) 0.1" NA
Oct 19 48° 68° 30° (1972) 83° (1995) 0.1" NA
Oct 20 48° 67° 31° (1972) 83° (2003) 0.1" NA
Oct 21 48° 67° 33° (1972) 89° (2003) 0.11" NA
Oct 22 48° 67° 30° (1987) 90° (1975) 0.12" NA
Oct 23 47° 66° 34° (1969) 81° (1975) 0.12" NA
Oct 24 47° 66° 29° (2006) 84° (2010) 0.12" NA
Oct 25 47° 66° 36° (1968) 84° (2010) 0.13" NA
Oct 26 46° 65° 33° (1990) 82° (2004) 0.12" NA
Oct 27 46° 65° 34° (1969) 81° (1971) 0.13" NA
Oct 28 46° 64° 31° (1976) 81° (1971) 0.13" NA
Oct 29 46° 64° 33° (1968) 83° (1999) 0.15" NA
Oct 30 45° 64° 31° (1976) 85° (2004) 0.14" NA
Oct 31 45° 63° 29° (1993) 85° (1968) 0.14" NA
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