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
Mar 1 21° 37° -12° (1962) 64° (2000) 0.05" NA
Mar 2 21° 38° -4° (1950) 65° (1992) 0.05" NA
Mar 3 22° 38° 0° (1996) 72° (1983) 0.05" NA
Mar 4 22° 39° -6° (2002) 72° (1974) 0.05" NA
Mar 5 22° 39° -3° (2002) 67° (1983) 0.05" NA
Mar 6 23° 39° -1° (1960) 65° (1951) 0.05" NA
Mar 7 23° 40° 0° (1955) 67° (1983) 0.06" NA
Mar 8 23° 40° -5° (1982) 78° (2000) 0.06" NA
Mar 9 24° 40° -4° (1982) 76° (2000) 0.06" NA
Mar 10 24° 41° 6° (1982) 69° (1955) 0.06" NA
Mar 11 24° 41° 2° (1979) 65° (1977) 0.06" NA
Mar 12 25° 42° 2° (1979) 72° (1990) 0.06" NA
Mar 13 25° 42° 9° (1950) 77° (1990) 0.06" NA
Mar 14 25° 42° 3° (1993) 73° (1995) 0.06" NA
Mar 15 26° 43° 7° (1993) 70° (1973) 0.06" NA
Mar 16 26° 43° 9° (1949) 68° (1990) 0.07" NA
Mar 17 26° 43° 8° (1967) 74° (1966) 0.07" NA
Mar 18 27° 44° 9° (1967) 66° (1966) 0.07" NA
Mar 19 27° 44° 5° (1965) 65° (1959) 0.07" NA
Mar 20 27° 44° 0° (1965) 73° (1976) 0.07" NA
Mar 21 28° 45° 6° (1965) 75° (1953) 0.08" NA
Mar 22 28° 45° 12° (1983) 68° (1953) 0.08" NA
Mar 23 28° 46° 12° (1960) 70° (1963) 0.08" NA
Mar 24 29° 46° 6° (1965) 70° (1963) 0.08" NA
Mar 25 29° 46° 3° (1974) 72° (1967) 0.08" NA
Mar 26 29° 47° 9° (1960) 76° (1989) 0.09" NA
Mar 27 30° 47° 3° (1965) 76° (1989) 0.09" NA
Mar 28 30° 47° 14° (1970) 77° (1998) 0.09" NA
Mar 29 30° 48° 12° (1969) 77° (1963) 0.09" NA
Mar 30 31° 48° 8° (1969) 81° (1986) 0.1" NA
Mar 31 31° 49° 10° (1969) 81° (1986) 0.1" NA
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