Blue Island, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 16° 31° -25° (1985) 67° (1989) 1.95" 12.6"
February 21° 36° -20° (1933) 75° (1976) 1.78" 10.3"
March 31° 47° -7° (1943) 86° (1986) 2.83" 5.7"
April 40° 59° 10° (1982) 92° (1942) 3.82" 1.4"
May 51° 71° 28° (1981) 102° (1934) 3.86" 0"
June 61° 81° 35° (1945) 107° (1934) 4.16" 0"
July 66° 85° 46° (1972) 106° (1995) 3.82" 0"
August 65° 82° 43° (1965) 102° (1991) 3.91" 0"
September 57° 75° 34° (1984) 101° (1953) 3.45" 0"
October 45° 63° 20° (1981) 94° (1963) 2.79" 0.1"
November 34° 48° -3° (1930) 81° (1950) 3.22" 2.4"
December 22° 36° -20° (1983) 71° (1970) 2.76" 10.4"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 28° 41° 5° (1930) 68° (1970) 0.1" NA
Dec 2 27° 40° -1° (1940) 69° (1982) 0.1" NA
Dec 3 27° 40° -8° (1940) 71° (1970) 0.1" NA
Dec 4 26° 39° 3° (1991) 68° (1998) 0.1" NA
Dec 5 26° 39° 8° (1928) 68° (2001) 0.1" NA
Dec 6 26° 39° 0° (1972) 65° (1951) 0.1" NA
Dec 7 25° 38° -2° (1936) 61° (1946) 0.1" NA
Dec 8 25° 38° 0° (1958) 64° (1946) 0.1" NA
Dec 9 24° 38° -8° (1958) 61° (1946) 0.1" NA
Dec 10 24° 37° -8° (1978) 60° (1971) 0.1" NA
Dec 11 24° 37° -5° (1972) 61° (1949) 0.09" NA
Dec 12 23° 37° -7° (1962) 62° (1991) 0.09" NA
Dec 13 23° 36° -3° (1958) 67° (1975) 0.09" NA
Dec 14 23° 36° -4° (1985) 66° (1975) 0.09" NA
Dec 15 22° 36° -8° (1951) 64° (1971) 0.09" NA
Dec 16 22° 35° -12° (1932) 63° (1984) 0.09" NA
Dec 17 22° 35° -7° (1951) 60° (1977) 0.09" NA
Dec 18 21° 35° -9° (1983) 59° (1939) 0.09" NA
Dec 19 21° 34° -12° (1983) 56° (1957) 0.09" NA
Dec 20 21° 34° -9° (1963) 59° (1949) 0.09" NA
Dec 21 20° 34° -13° (1989) 62° (1967) 0.08" NA
Dec 22 20° 34° -12° (1983) 57° (1957) 0.08" NA
Dec 23 20° 33° -17° (1983) 60° (1982) 0.08" NA
Dec 24 19° 33° -20° (1983) 59° (1982) 0.08" NA
Dec 25 19° 33° -13° (1983) 64° (1982) 0.08" NA
Dec 26 19° 33° -9° (1933) 55° (1971) 0.08" NA
Dec 27 19° 32° -12° (1933) 61° (1982) 0.08" NA
Dec 28 18° 32° -3° (1961) 67° (1984) 0.08" NA
Dec 29 18° 32° -8° (1976) 64° (1984) 0.08" NA
Dec 30 18° 32° -8° (1983) 60° (1936) 0.07" NA
Dec 31 18° 32° -10° (1967) 60° (1965) 0.07" NA
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