Riverwoods, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 16° 32° -27° (1982) 63° (1997) 1.81" 11.2"
February 19° 36° -20° (1996) 74° (2000) 1.8" 7.9"
March 28° 45° -5° (2002) 83° (1986) 2.37" 5.4"
April 38° 57° 10° (1982) 90° (2002) 3.58" 0.9"
May 47° 68° 28° (2004) 93° (1991) 4.01" 0"
June 57° 78° 37° (1993) 102° (1988) 3.67" 0"
July 63° 83° 45° (1982) 105° (1995) 3.63" 0"
August 62° 81° 42° (1986) 101° (1991) 4.77" 0"
September 54° 74° 30° (1995) 97° (1990) 3.48" 0"
October 42° 62° 24° (1992) 89° (2007) 3.24" 0.1"
November 33° 49° 6° (1986) 76° (1999) 3.06" 1.4"
December 20° 36° -20° (1983) 70° (2001) 2.4" 6.5"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Apr 1 33° 51° 24° (1984) 84° (1986) 0.11" 0.1"
Apr 2 34° 51° 23° (1992) 78° (2003) 0.11" 0.1"
Apr 3 34° 52° 20° (1987) 76° (1999) 0.11" 0"
Apr 4 34° 52° 18° (1982) 75° (1999) 0.1" 0.1"
Apr 5 35° 53° 16° (1995) 76° (1997) 0.11" 0.1"
Apr 6 35° 53° 17° (1982) 83° (1988) 0.11" 0"
Apr 7 35° 53° 10° (1982) 84° (1991) 0.11" 0.1"
Apr 8 35° 54° 19° (1996) 85° (2001) 0.11" 0"
Apr 9 36° 54° 20° (1997) 78° (2001) 0.12" 0"
Apr 10 36° 55° 19° (1989) 71° (1987) 0.12" 0.1"
Apr 11 36° 55° 24° (1989) 74° (1987) 0.12" 0"
Apr 12 37° 55° 25° (1990) 82° (1996) 0.12" 0"
Apr 13 37° 56° 23° (1989) 76° (1985) 0.12" 0.1"
Apr 14 37° 56° 27° (1997) 78° (2006) 0.12" 0"
Apr 15 38° 57° 27° (2007) 85° (2003) 0.12" 0"
Apr 16 38° 57° 26° (1983) 89° (2002) 0.12" 0.1"
Apr 17 38° 57° 27° (1983) 88° (2002) 0.12" 0"
Apr 18 39° 58° 24° (1997) 86° (2002) 0.13" 0"
Apr 19 39° 58° 24° (1983) 90° (2002) 0.13" 0"
Apr 20 39° 59° 26° (1983) 85° (1985) 0.12" 0"
Apr 21 40° 59° 27° (1988) 85° (1987) 0.13" 0.1"
Apr 22 40° 59° 27° (1986) 85° (1985) 0.13" 0"
Apr 23 40° 60° 24° (1986) 83° (2007) 0.12" 0"
Apr 24 41° 60° 30° (1995) 79° (1985) 0.12" 0"
Apr 25 41° 60° 28° (1983) 87° (1994) 0.12" 0"
Apr 26 41° 61° 29° (2006) 87° (1990) 0.13" 0"
Apr 27 42° 61° 29° (1996) 88° (1986) 0.12" 0"
Apr 28 42° 62° 26° (1992) 88° (1990) 0.13" 0"
Apr 29 42° 62° 30° (1988) 80° (2004) 0.13" 0"
Apr 30 43° 62° 33° (1988) 84° (2007) 0.12" 0"
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