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
Jul 1 61° 82° 38° (1965) 97° (1963) 0.13" NA
Jul 2 61° 82° 46° (2001) 96° (1963) 0.13" NA
Jul 3 61° 82° 46° (1967) 94° (1966) 0.13" NA
Jul 4 61° 82° 40° (1967) 94° (1966) 0.12" NA
Jul 5 61° 82° 42° (1967) 96° (1990) 0.12" NA
Jul 6 61° 82° 38° (1965) 97° (1988) 0.12" NA
Jul 7 62° 82° 47° (1983) 96° (1991) 0.12" NA
Jul 8 62° 82° 46° (1963) 98° (1980) 0.12" NA
Jul 9 62° 82° 46° (1963) 95° (1988) 0.12" NA
Jul 10 62° 82° 43° (1963) 103° (1974) 0.12" NA
Jul 11 62° 82° 48° (1968) 99° (1989) 0.12" NA
Jul 12 62° 82° 46° (1967) 95° (1966) 0.12" NA
Jul 13 62° 82° 47° (1964) 95° (1974) 0.12" NA
Jul 14 62° 82° 44° (1967) 94° (1974) 0.12" NA
Jul 15 62° 83° 44° (1967) 98° (1988) 0.12" NA
Jul 16 62° 83° 48° (1967) 100° (1988) 0.12" NA
Jul 17 62° 83° 48° (1976) 93° (1968) 0.12" NA
Jul 18 62° 83° 47° (1979) 95° (1966) 0.12" NA
Jul 19 62° 83° 52° (1965) 95° (1966) 0.12" NA
Jul 20 62° 83° 52° (1967) 97° (1991) 0.12" NA
Jul 21 62° 83° 47° (1970) 96° (1980) 0.12" NA
Jul 22 62° 83° 50° (1981) 96° (1991) 0.12" NA
Jul 23 62° 83° 49° (1985) 96° (1983) 0.12" NA
Jul 24 62° 82° 51° (2000) 94° (1965) 0.12" NA
Jul 25 62° 82° 52° (1991) 98° (2005) 0.12" NA
Jul 26 62° 82° 49° (1977) 93° (1974) 0.12" NA
Jul 27 62° 82° 45° (1977) 91° (1966) 0.13" NA
Jul 28 62° 82° 53° (1977) 92° (1988) 0.13" NA
Jul 29 62° 82° 46° (1971) 96° (1983) 0.13" NA
Jul 30 62° 82° 48° (1971) 97° (1988) 0.13" NA
Jul 31 62° 82° 46° (1971) 93° (1988) 0.13" NA
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