Fort Dearborn, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 18° 32° -24° (1985) 67° (1950) 2.17" NA
February 24° 38° -12° (1951) 71° (1976) 1.85" NA
March 32° 47° 0° (1962) 84° (1986) 3.01" NA
April 42° 59° 13° (1982) 91° (1986) 3.65" NA
May 51° 70° 32° (1954) 94° (1991) 3.7" NA
June 61° 80° 41° (1972) 104° (1988) 4.3" NA
July 66° 84° 51° (1975) 102° (1991) 3.68" NA
August 65° 83° 49° (1965) 101° (1988) 3.86" NA
September 57° 76° 37° (1974) 99° (1953) 3.21" NA
October 46° 64° 24° (1981) 92° (1971) 2.71" NA
November 35° 49° 0° (1950) 80° (1950) 3.32" NA
December 24° 37° -20° (1983) 69° (1982) 2.63" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Mar 1 28° 42° 0° (1962) 58° (1972) 0.08" NA
Mar 2 28° 42° 0° (1950) 68° (1992) 0.08" NA
Mar 3 28° 43° 10° (1950) 73° (1974) 0.08" NA
Mar 4 29° 43° 11° (1978) 76° (1974) 0.08" NA
Mar 5 29° 43° 5° (1978) 75° (1983) 0.08" NA
Mar 6 29° 44° 9° (1960) 75° (1983) 0.08" NA
Mar 7 30° 44° 5° (1955) 71° (1987) 0.09" NA
Mar 8 30° 44° 10° (1982) 75° (1987) 0.09" NA
Mar 9 30° 45° 11° (1982) 74° (1987) 0.09" NA
Mar 10 30° 45° 12° (1979) 68° (1955) 0.09" NA
Mar 11 31° 46° 4° (1979) 73° (1990) 0.09" NA
Mar 12 31° 46° 16° (1984) 75° (1990) 0.09" NA
Mar 13 31° 46° 18° (1993) 79° (1990) 0.09" NA
Mar 14 32° 47° 8° (1993) 71° (1990) 0.09" NA
Mar 15 32° 47° 14° (1949) 73° (1973) 0.1" NA
Mar 16 32° 47° 20° (1967) 71° (1977) 0.1" NA
Mar 17 32° 48° 13° (1967) 73° (1966) 0.1" NA
Mar 18 33° 48° 13° (1965) 71° (1969) 0.1" NA
Mar 19 33° 48° 10° (1965) 70° (1976) 0.1" NA
Mar 20 33° 49° 8° (1965) 74° (1976) 0.1" NA
Mar 21 34° 49° 12° (1965) 75° (1953) 0.1" NA
Mar 22 34° 50° 18° (1951) 73° (1991) 0.11" NA
Mar 23 34° 50° 18° (1971) 73° (1994) 0.11" NA
Mar 24 35° 50° 8° (1974) 76° (1994) 0.11" NA
Mar 25 35° 51° 13° (1974) 75° (1967) 0.11" NA
Mar 26 35° 51° 12° (1955) 74° (1986) 0.11" NA
Mar 27 35° 51° 16° (1965) 76° (1989) 0.11" NA
Mar 28 36° 52° 18° (1970) 78° (1968) 0.11" NA
Mar 29 36° 52° 17° (1969) 79° (1963) 0.11" NA
Mar 30 36° 53° 11° (1969) 84° (1986) 0.11" NA
Mar 31 37° 53° 15° (1969) 81° (1986) 0.12" NA
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