River Forest, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 14° 30° -27° (1985) 67° (1950) 1.75" 11.3"
February 19° 35° -21° (1899) 75° (1976) 1.63" 8.3"
March 29° 46° -12° (1873) 88° (1986) 2.65" 6"
April 38° 58° 7° (1982) 91° (1980) 3.68" 1.6"
May 47° 70° 27° (1983) 98° (1934) 3.38" 0"
June 57° 79° 35° (1945) 104° (1988) 3.63" 0"
July 63° 84° 45° (1983) 105° (1934) 3.51" 0"
August 62° 81° 42° (1986) 102° (1918) 4.62" 0"
September 54° 74° 29° (1995) 101° (1953) 3.27" 0"
October 42° 62° 14° (1887) 94° (1963) 2.71" 0.3"
November 32° 47° -2° (1950) 81° (1950) 3.01" 1.8"
December 20° 34° -25° (1983) 71° (1982) 2.43" 8.7"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Apr 1 33° 52° 17° (1881) 82° (1946) 0.11" NA
Apr 2 34° 53° 18° (1899) 82° (1963) 0.11" NA
Apr 3 34° 53° 17° (1987) 81° (1956) 0.11" NA
Apr 4 34° 53° 16° (1975) 79° (1929) 0.12" NA
Apr 5 34° 54° 18° (1995) 85° (1988) 0.12" NA
Apr 6 35° 54° 15° (1982) 84° (1929) 0.12" NA
Apr 7 35° 55° 7° (1982) 84° (1893) 0.12" NA
Apr 8 35° 55° 20° (1972) 80° (1931) 0.12" NA
Apr 9 36° 55° 20° (1989) 80° (1887) 0.12" NA
Apr 10 36° 56° 18° (1989) 90° (1930) 0.12" NA
Apr 11 36° 56° 25° (1989) 90° (1930) 0.12" NA
Apr 12 36° 57° 21° (1957) 86° (1977) 0.12" NA
Apr 13 37° 57° 21° (1950) 82° (1941) 0.13" NA
Apr 14 37° 57° 23° (1943) 85° (2003) 0.13" NA
Apr 15 37° 58° 25° (1943) 88° (2002) 0.13" NA
Apr 16 38° 58° 18° (1875) 87° (2002) 0.13" NA
Apr 17 38° 59° 17° (1875) 88° (1976) 0.13" NA
Apr 18 38° 59° 23° (1983) 89° (2002) 0.13" NA
Apr 19 39° 59° 22° (1983) 86° (1985) 0.13" NA
Apr 20 39° 60° 24° (1897) 87° (1985) 0.13" NA
Apr 21 39° 60° 27° (1986) 88° (1985) 0.13" NA
Apr 22 40° 61° 24° (1986) 91° (1980) 0.13" NA
Apr 23 40° 61° 25° (1986) 88° (1960) 0.13" NA
Apr 24 40° 61° 29° (1910) 87° (1990) 0.12" NA
Apr 25 41° 62° 27° (1887) 87° (1990) 0.12" NA
Apr 26 41° 62° 27° (2006) 89° (1986) 0.12" NA
Apr 27 41° 63° 29° (1945) 87° (1986) 0.12" NA
Apr 28 41° 63° 28° (1992) 86° (1915) 0.12" NA
Apr 29 42° 63° 31° (1958) 88° (1970) 0.12" NA
Apr 30 42° 64° 30° (1873) 91° (1942) 0.12" NA
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