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
Jul 1 70° 88° 60° (1988) 98° (2005) 0.13" NA
Jul 2 70° 89° 58° (1995) 99° (1970) 0.13" NA
Jul 3 70° 89° 63° (2007) 100° (1970) 0.13" NA
Jul 4 70° 89° 63° (1992) 98° (1969) 0.12" NA
Jul 5 71° 89° 56° (1997) 101° (1990) 0.13" NA
Jul 6 71° 89° 54° (1972) 98° (1977) 0.13" NA
Jul 7 71° 89° 60° (1972) 100° (1977) 0.14" NA
Jul 8 71° 89° 61° (1987) 99° (1977) 0.14" NA
Jul 9 71° 89° 63° (1994) 99° (1971) 0.13" NA
Jul 10 71° 89° 59° (1996) 98° (1990) 0.13" NA
Jul 11 71° 89° 54° (1975) 99° (1976) 0.12" NA
Jul 12 71° 89° 61° (1975) 99° (1976) 0.13" NA
Jul 13 71° 89° 53° (1975) 99° (1995) 0.12" NA
Jul 14 71° 89° 57° (1990) 100° (1977) 0.14" NA
Jul 15 71° 89° 59° (1987) 100° (1988) 0.13" NA
Jul 16 71° 89° 59° (1990) 101° (1988) 0.14" NA
Jul 17 71° 89° 61° (1987) 100° (1988) 0.14" NA
Jul 18 71° 89° 63° (1976) 100° (1988) 0.14" NA
Jul 19 71° 89° 60° (1976) 99° (1977) 0.13" NA
Jul 20 71° 89° 61° (2009) 100° (2006) 0.14" NA
Jul 21 71° 89° 59° (1970) 99° (1998) 0.13" NA
Jul 22 71° 89° 60° (1970) 98° (1976) 0.13" NA
Jul 23 71° 89° 63° (1970) 101° (1976) 0.14" NA
Jul 24 71° 89° 62° (1990) 101° (1976) 0.14" NA
Jul 25 71° 89° 58° (1975) 101° (2005) 0.14" NA
Jul 26 71° 89° 60° (2003) 100° (1999) 0.14" NA
Jul 27 71° 89° 58° (2004) 103° (1999) 0.14" NA
Jul 28 71° 89° 59° (1994) 99° (1997) 0.14" NA
Jul 29 71° 89° 59° (1994) 99° (1970) 0.15" NA
Jul 30 71° 89° 59° (1991) 105° (1999) 0.15" NA
Jul 31 71° 89° 58° (1971) 103° (1999) 0.15" NA
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