Great Lakes, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 12° 28° -27° (1985) 64° (1989) 1.6" NA
February 17° 33° -22° (1996) 71° (2000) 1.4" NA
March 26° 43° -12° (1962) 81° (1986) 2.15" NA
April 36° 55° 8° (1982) 90° (1980) 3.73" NA
May 46° 67° 24° (1966) 93° (1987) 3.44" NA
June 55° 77° 34° (1992) 101° (1988) 3.62" NA
July 61° 82° 45° (2001) 102° (1995) 3.49" NA
August 61° 80° 40° (1986) 102° (1988) 4.22" NA
September 52° 73° 29° (1974) 100° (1953) 3.4" NA
October 41° 62° 18° (1981) 90° (1963) 2.42" NA
November 30° 47° -5° (1950) 79° (1950) 2.57" NA
December 18° 34° -23° (1983) 69° (2001) 2.05" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Feb 1 13° 29° -18° (1996) 51° (1968) 0.05" NA
Feb 2 13° 30° -22° (1996) 47° (1987) 0.05" NA
Feb 3 14° 30° -15° (1996) 48° (1987) 0.05" NA
Feb 4 14° 30° -22° (1996) 57° (1992) 0.05" NA
Feb 5 14° 30° -22° (1996) 58° (1973) 0.05" NA
Feb 6 14° 31° -17° (1979) 51° (1964) 0.05" NA
Feb 7 14° 31° -12° (1982) 50° (1990) 0.05" NA
Feb 8 15° 31° -13° (1951) 50° (1987) 0.05" NA
Feb 9 15° 31° -12° (1951) 60° (1990) 0.05" NA
Feb 10 15° 31° -11° (1982) 54° (1999) 0.05" NA
Feb 11 16° 32° -13° (1982) 57° (1999) 0.05" NA
Feb 12 16° 32° -11° (1986) 69° (1999) 0.05" NA
Feb 13 16° 32° -8° (1955) 54° (1990) 0.05" NA
Feb 14 16° 33° -3° (1986) 58° (1954) 0.05" NA
Feb 15 17° 33° -5° (1963) 63° (1954) 0.05" NA
Feb 16 17° 33° -11° (1958) 62° (1976) 0.05" NA
Feb 17 17° 33° -11° (1958) 54° (1981) 0.05" NA
Feb 18 17° 34° -4° (1980) 57° (1981) 0.05" NA
Feb 19 18° 34° -13° (1979) 56° (1994) 0.05" NA
Feb 20 18° 34° -7° (1959) 60° (1981) 0.05" NA
Feb 21 18° 35° -9° (1963) 60° (1983) 0.05" NA
Feb 22 19° 35° -6° (1963) 56° (1991) 0.05" NA
Feb 23 19° 35° 2° (1967) 60° (1984) 0.05" NA
Feb 24 19° 36° -7° (1967) 67° (2000) 0.05" NA
Feb 25 20° 36° -10° (1967) 62° (2002) 0.05" NA
Feb 26 20° 36° -5° (1963) 71° (2000) 0.05" NA
Feb 27 20° 37° -2° (1994) 65° (2000) 0.05" NA
Feb 28 21° 37° -3° (1994) 68° (1976) 0.05" NA
Feb 29 21° 37° -3° (1980) 53° (1976) 0.05" NA
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