Arlington Heights, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 10° 27° -26° (1985) 62° (1967) 1.56" NA
February 15° 33° -21° (1977) 69° (2000) 1.38" NA
March 25° 44° -9° (2002) 83° (1986) 2.33" NA
April 36° 57° 5° (1982) 89° (1980) 3.66" NA
May 46° 69° 22° (1966) 93° (1975) 4.02" NA
June 57° 79° 35° (1993) 102° (1971) 4.27" NA
July 62° 82° 38° (1965) 103° (1974) 3.8" NA
August 60° 80° 38° (1986) 100° (1991) 4.58" NA
September 51° 73° 25° (1964) 96° (1978) 3.32" NA
October 39° 61° 14° (1988) 88° (1971) 2.62" NA
November 29° 46° -10° (1976) 75° (1968) 2.93" NA
December 17° 32° -20° (1983) 66° (1982) 2.09" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Apr 1 31° 51° 17° (1964) 83° (1986) 0.1" NA
Apr 2 31° 51° 16° (1987) 80° (1963) 0.1" NA
Apr 3 32° 52° 22° (1987) 79° (1963) 0.11" NA
Apr 4 32° 52° 16° (1982) 73° (1981) 0.11" NA
Apr 5 33° 52° 13° (1982) 69° (2005) 0.11" NA
Apr 6 33° 53° 9° (1979) 83° (1988) 0.11" NA
Apr 7 33° 53° 5° (1982) 83° (1991) 0.11" NA
Apr 8 34° 54° 11° (1982) 81° (2001) 0.12" NA
Apr 9 34° 54° 22° (1974) 77° (2001) 0.12" NA
Apr 10 34° 55° 18° (1989) 72° (1969) 0.12" NA
Apr 11 35° 55° 21° (1989) 82° (1977) 0.12" NA
Apr 12 35° 56° 22° (1976) 84° (1971) 0.12" NA
Apr 13 35° 56° 21° (1989) 82° (1977) 0.12" NA
Apr 14 36° 56° 27° (1963) 77° (1977) 0.12" NA
Apr 15 36° 57° 29° (1978) 83° (2003) 0.12" NA
Apr 16 36° 57° 25° (1980) 87° (2002) 0.13" NA
Apr 17 37° 58° 25° (1983) 86° (2002) 0.13" NA
Apr 18 37° 58° 24° (1983) 85° (2002) 0.13" NA
Apr 19 37° 59° 20° (1983) 88° (2002) 0.13" NA
Apr 20 38° 59° 28° (1983) 85° (1987) 0.13" NA
Apr 21 38° 59° 25° (1988) 84° (1985) 0.13" NA
Apr 22 38° 60° 24° (1978) 85° (1985) 0.13" NA
Apr 23 39° 60° 25° (1984) 89° (1980) 0.13" NA
Apr 24 39° 61° 27° (1969) 80° (1990) 0.13" NA
Apr 25 39° 61° 30° (1971) 87° (1990) 0.13" NA
Apr 26 40° 61° 27° (1976) 87° (1990) 0.13" NA
Apr 27 40° 62° 27° (1976) 88° (1986) 0.13" NA
Apr 28 40° 62° 27° (1976) 86° (1986) 0.13" NA
Apr 29 41° 63° 25° (1977) 80° (1987) 0.13" NA
Apr 30 41° 63° 29° (1969) 89° (1970) 0.13" NA
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