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
Dec 1 23° 38° -3° (1976) 64° (1962) 0.09" NA
Dec 2 22° 38° -3° (1976) 64° (1982) 0.08" NA
Dec 3 22° 37° -3° (1976) 66° (1982) 0.08" NA
Dec 4 21° 37° 0° (1991) 60° (1982) 0.08" NA
Dec 5 21° 36° 0° (1964) 58° (2001) 0.08" NA
Dec 6 21° 36° -1° (2007) 65° (2001) 0.08" NA
Dec 7 20° 35° -4° (1976) 58° (1980) 0.08" NA
Dec 8 20° 35° -6° (1976) 59° (1966) 0.08" NA
Dec 9 20° 35° -7° (1977) 59° (1991) 0.07" NA
Dec 10 19° 34° -11° (1978) 52° (1990) 0.07" NA
Dec 11 19° 34° -10° (1978) 56° (1965) 0.07" NA
Dec 12 18° 33° -10° (1962) 56° (1965) 0.07" NA
Dec 13 18° 33° -10° (2000) 59° (1991) 0.07" NA
Dec 14 18° 33° -9° (1985) 59° (1975) 0.07" NA
Dec 15 17° 32° -13° (1989) 59° (1971) 0.07" NA
Dec 16 17° 32° -11° (1989) 58° (1984) 0.07" NA
Dec 17 17° 32° -4° (1964) 59° (1984) 0.06" NA
Dec 18 16° 31° -9° (1985) 54° (1977) 0.06" NA
Dec 19 16° 31° -16° (1983) 54° (2002) 0.06" NA
Dec 20 15° 31° -17° (1963) 53° (1988) 0.06" NA
Dec 21 15° 31° -17° (1989) 60° (1967) 0.06" NA
Dec 22 15° 30° -17° (1989) 57° (1967) 0.06" NA
Dec 23 14° 30° -16° (1989) 52° (1965) 0.06" NA
Dec 24 14° 30° -20° (1983) 58° (1982) 0.06" NA
Dec 25 14° 29° -18° (1983) 60° (1982) 0.06" NA
Dec 26 13° 29° -12° (1983) 60° (1982) 0.06" NA
Dec 27 13° 29° -5° (1977) 43° (2003) 0.06" NA
Dec 28 13° 29° -7° (1977) 60° (1982) 0.06" NA
Dec 29 12° 28° -11° (1976) 63° (1984) 0.06" NA
Dec 30 12° 28° -13° (1963) 49° (1984) 0.05" NA
Dec 31 12° 28° -16° (1963) 58° (1965) 0.05" NA
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