Historic Average
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West Chicago, Illinois
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Monthly Averages & Records -  °F | °C
Date Average
Low		 Average
High		 Record
Low		 Record
High		 Average
Precipitation		 Average
Snow
January -10° 0° -32.2° (1985) 18.3° (1989) 1.85" NA
February -7° 3° -29.4° (1977) 23.3° (2000) 1.56" NA
March -2° 10° -23.3° (1962) 29.4° (1986) 2.62" NA
April 3° 17° -15.6° (1982) 32.2° (2002) 3.8" NA
May 9° 24° -3.9° (1966) 35° (1967) 3.94" NA
June 14° 29° 0° (1972) 39.4° (1988) 3.91" NA
July 17° 31° 5° (1967) 40.6° (1995) 3.97" NA
August 16° 29° 3.3° (1963) 37.8° (1991) 4.6" NA
September 12° 26° -2.8° (1974) 37.8° (1953) 3.38" NA
October 6° 19° -10° (1988) 32.2° (1971) 2.66" NA
November 0° 10° -20° (1950) 25.6° (1978) 3.2" NA
December -7° 3° -29.4° (1983) 21.1° (2001) 2.45" NA
Daily Averages & Records -  °F | °C
Date Average
Low		 Average
High		 Record
Low		 Record
High		 Average
Precipitation		 Average
Snow
May 1 5.6° 20.6° -2° (1963) 32° (1992) 0.13" NA
May 2 6.1° 21.1° -2° (1978) 32° (1959) 0.13" NA
May 3 6.1° 21.1° -3° (2004) 32° (2001) 0.13" NA
May 4 6.1° 21.1° -3° (2005) 33° (1952) 0.13" NA
May 5 6.7° 21.7° -2° (1954) 33° (1952) 0.13" NA
May 6 6.7° 21.7° -3° (1968) 31° (2000) 0.13" NA
May 7 7.2° 22.2° -3° (1989) 29° (1964) 0.13" NA
May 8 7.2° 22.2° -3° (1976) 32° (1963) 0.13" NA
May 9 7.2° 22.2° -2° (1983) 32° (1993) 0.13" NA
May 10 7.8° 22.8° -4° (1966) 32° (1987) 0.13" NA
May 11 7.8° 22.8° 0° (1966) 32° (1987) 0.13" NA
May 12 7.8° 22.8° -3° (1981) 32° (1956) 0.13" NA
May 13 8.3° 23.3° -1° (1975) 32° (1991) 0.13" NA
May 14 8.3° 23.3° 0° (1996) 32° (1982) 0.12" NA
May 15 8.3° 23.9° 1° (1973) 32° (1998) 0.12" NA
May 16 8.9° 23.9° -1° (1997) 33° (2001) 0.12" NA
May 17 8.9° 23.9° 1° (1973) 33° (2001) 0.12" NA
May 18 8.9° 24.4° -1° (2002) 34° (1998) 0.12" NA
May 19 9.4° 24.4° 2° (1976) 34° (1998) 0.12" NA
May 20 9.4° 24.4° 0° (1981) 33° (1975) 0.12" NA
May 21 9.4° 25° -2° (2002) 32° (1972) 0.12" NA
May 22 10° 25° 0° (1997) 33° (1956) 0.12" NA
May 23 10° 25° 1° (1969) 32° (1964) 0.13" NA
May 24 10° 25.6° 1° (1956) 32° (1975) 0.13" NA
May 25 10.6° 25.6° -1° (1992) 32° (1977) 0.13" NA
May 26 10.6° 25.6° 1° (1961) 35° (1967) 0.13" NA
May 27 10.6° 26.1° -2° (1992) 35° (1967) 0.13" NA
May 28 11.1° 26.1° -1° (1992) 34° (1991) 0.13" NA
May 29 11.1° 26.1° 1° (1965) 33.9° (2006) 0.13" NA
May 30 11.1° 26.7° 2° (1984) 33° (1988) 0.13" NA
May 31 11.7° 26.7° 3° (1972) 34° (1988) 0.13" NA
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