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
Aug 1 62° 82° 48° (1990) 95° (1987) 0.14" NA
Aug 2 62° 82° 49° (1965) 100° (1988) 0.14" NA
Aug 3 62° 82° 47° (1966) 100° (1991) 0.14" NA
Aug 4 62° 82° 46° (1972) 97° (1988) 0.14" NA
Aug 5 62° 82° 45° (1972) 97° (1988) 0.15" NA
Aug 6 62° 82° 48° (1971) 90° (1968) 0.15" NA
Aug 7 61° 81° 46° (1990) 95° (1968) 0.15" NA
Aug 8 61° 81° 44° (1976) 93° (1988) 0.15" NA
Aug 9 61° 81° 42° (1964) 98° (1988) 0.15" NA
Aug 10 61° 81° 48° (1972) 93° (1984) 0.15" NA
Aug 11 61° 81° 43° (1965) 90° (1983) 0.15" NA
Aug 12 61° 81° 45° (1982) 92° (1988) 0.15" NA
Aug 13 60° 81° 48° (2004) 94° (1971) 0.15" NA
Aug 14 60° 81° 43° (1964) 93° (1972) 0.15" NA
Aug 15 60° 80° 42° (1964) 93° (1972) 0.15" NA
Aug 16 60° 80° 42° (1979) 91° (1988) 0.15" NA
Aug 17 60° 80° 44° (1976) 97° (1988) 0.15" NA
Aug 18 60° 80° 39° (1963) 99° (1988) 0.15" NA
Aug 19 59° 80° 45° (1977) 95° (1972) 0.15" NA
Aug 20 59° 79° 50° (1977) 96° (1983) 0.15" NA
Aug 21 59° 79° 50° (1985) 95° (1968) 0.15" NA
Aug 22 59° 79° 46° (1969) 94° (1968) 0.15" NA
Aug 23 58° 79° 45° (1987) 94° (1968) 0.15" NA
Aug 24 58° 79° 42° (1965) 95° (1968) 0.15" NA
Aug 25 58° 79° 41° (1977) 93° (1968) 0.15" NA
Aug 26 57° 78° 40° (1964) 95° (1991) 0.15" NA
Aug 27 57° 78° 48° (1963) 94° (1991) 0.15" NA
Aug 28 57° 78° 38° (1986) 94° (1973) 0.15" NA
Aug 29 57° 78° 38° (1965) 95° (1991) 0.14" NA
Aug 30 56° 77° 46° (1976) 95° (1984) 0.14" NA
Aug 31 56° 77° 46° (1987) 92° (1969) 0.14" NA
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