Janesville, Wisconsin
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 11° 28° -28° (1994) 59° (1997) 1.37" 10.8"
February 15° 33° -31° (1996) 69° (2000) 1.49" 8.9"
March 26° 45° -11° (2002) 80° (1998) 1.96" 3.5"
April 37° 59° 15° (1995) 89° (2002) 3.45" 1.1"
May 48° 70° 27° (2005) 92° (1991) 3.77" 0.1"
June 57° 80° 36° (1993) 101° (1988) 4.36" 0"
July 61° 84° 45° (2001) 101° (1995) 3.78" 0"
August 59° 81° 43° (1992) 102° (1988) 4.47" 0"
September 50° 74° 28° (1995) 96° (2000) 3.31" 0"
October 39° 61° 14° (1988) 88° (2007) 2.93" 0.2"
November 29° 46° -4° (1995) 74° (2000) 2.44" 1.6"
December 16° 32° -25° (2000) 67° (2001) 1.88" 8.7"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 56° 79° 44° (1987) 93° (2000) 0.12" 0"
Sep 2 56° 79° 45° (1994) 96° (2000) 0.11" 0"
Sep 3 56° 79° 43° (1987) 92° (1999) 0.1" 0"
Sep 4 55° 79° 40° (1997) 91° (1990) 0.11" 0"
Sep 5 55° 78° 38° (1988) 91° (1999) 0.1" 0"
Sep 6 54° 78° 39° (1988) 95° (1990) 0.11" 0"
Sep 7 54° 78° 39° (1988) 95° (1990) 0.1" 0"
Sep 8 54° 77° 43° (1988) 91° (2003) 0.11" 0"
Sep 9 53° 77° 41° (1995) 91° (2002) 0.12" 0"
Sep 10 53° 77° 42° (1995) 93° (1991) 0.11" 0"
Sep 11 52° 76° 37° (1993) 87° (2000) 0.1" 0"
Sep 12 52° 76° 39° (1993) 87° (2003) 0.11" 0"
Sep 13 51° 76° 41° (2007) 90° (1998) 0.11" 0"
Sep 14 51° 75° 40° (1989) 91° (1998) 0.11" 0"
Sep 15 50° 75° 34° (2007) 88° (1994) 0.11" 0"
Sep 16 50° 75° 35° (2007) 88° (1994) 0.11" 0"
Sep 17 49° 74° 38° (1999) 91° (1988) 0.11" 0"
Sep 18 49° 74° 39° (1999) 84° (1988) 0.11" 0"
Sep 19 48° 73° 40° (1992) 88° (2007) 0.12" 0"
Sep 20 48° 73° 33° (1991) 85° (1998) 0.11" 0"
Sep 21 48° 72° 32° (1991) 83° (1994) 0.11" 0"
Sep 22 47° 72° 33° (1989) 88° (2007) 0.12" 0"
Sep 23 47° 72° 28° (1995) 84° (2004) 0.12" 0"
Sep 24 46° 71° 29° (1995) 84° (2007) 0.12" 0"
Sep 25 46° 71° 33° (1995) 89° (2007) 0.12" 0"
Sep 26 45° 70° 32° (1989) 81° (1987) 0.11" 0"
Sep 27 45° 70° 29° (1991) 90° (1998) 0.11" 0"
Sep 28 44° 69° 30° (1991) 85° (1990) 0.11" 0"
Sep 29 44° 69° 30° (1991) 81° (1995) 0.1" 0"
Sep 30 43° 68° 29° (1993) 85° (2002) 0.1" 0"
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