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
Jun 1 51° 73° 39° (1993) 92° (1988) 0.12" NA
Jun 2 51° 73° 36° (1956) 91° (1988) 0.12" NA
Jun 3 52° 74° 36° (1956) 89° (1972) 0.12" NA
Jun 4 52° 74° 39° (1982) 92° (1953) 0.12" NA
Jun 5 52° 74° 39° (1982) 91° (1977) 0.12" NA
Jun 6 53° 75° 38° (1958) 92° (1952) 0.12" NA
Jun 7 53° 75° 42° (1977) 93° (1988) 0.12" NA
Jun 8 53° 75° 37° (1949) 92° (1988) 0.12" NA
Jun 9 54° 76° 39° (1969) 92° (1985) 0.12" NA
Jun 10 54° 76° 37° (1994) 89° (1956) 0.12" NA
Jun 11 54° 76° 34° (1972) 92° (1973) 0.12" NA
Jun 12 54° 76° 41° (1972) 93° (1956) 0.12" NA
Jun 13 55° 77° 40° (1985) 95° (1988) 0.12" NA
Jun 14 55° 77° 41° (1978) 98° (1987) 0.12" NA
Jun 15 55° 77° 44° (1951) 94° (1991) 0.13" NA
Jun 16 56° 77° 45° (1961) 96° (1994) 0.13" NA
Jun 17 56° 78° 42° (1980) 92° (1962) 0.12" NA
Jun 18 56° 78° 45° (1950) 91° (1987) 0.12" NA
Jun 19 56° 78° 48° (1950) 98° (1953) 0.12" NA
Jun 20 57° 78° 45° (1980) 99° (1953) 0.12" NA
Jun 21 57° 79° 40° (1963) 100° (1988) 0.12" NA
Jun 22 57° 79° 34° (1992) 97° (1988) 0.12" NA
Jun 23 57° 79° 41° (1992) 99° (1988) 0.12" NA
Jun 24 58° 79° 44° (1982) 92° (1997) 0.12" NA
Jun 25 58° 80° 40° (1979) 95° (1954) 0.12" NA
Jun 26 58° 80° 40° (1986) 101° (1988) 0.12" NA
Jun 27 58° 80° 38° (1992) 95° (1983) 0.12" NA
Jun 28 59° 80° 42° (1992) 94° (1971) 0.12" NA
Jun 29 59° 80° 50° (1950) 95° (1971) 0.12" NA
Jun 30 59° 80° 50° (1989) 96° (1953) 0.12" NA
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