La Salle, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January -11° -2° -32.2° (1985) 17.8° (1997) 1.46" NA
February -8° -29.4° (1979) 22.2° (1976) 1.42" NA
March -2° -22.2° (2002) 27.8° (1998) 2.67" NA
April 16° -10.6° (1982) 32.8° (1987) 3.6" NA
May 23° -3.9° (1989) 34.4° (2006) 4.55" NA
June 15° 28° 2.8° (1969) 38.3° (1988) 4.1" NA
July 17° 29° 5.6° (1972) 40° (1983) 4.04" NA
August 16° 28° 4.4° (1986) 39.4° (1988) 4.11" NA
September 11° 25° -2.8° (1974) 36.7° (2000) 3.63" NA
October 18° -8.9° (1988) 32.8° (2007) 3" NA
November -1° -20.6° (1977) 26.1° (2000) 2.83" NA
December -8° -29.4° (1989) 21.1° (1970) 2.29" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 13.9° 26.7° 3° (1967) 35° (2000) 0.13" NA
Sep 2 13.9° 26.7° 4° (1967) 37° (2000) 0.13" NA
Sep 3 13.3° 26.7° 5° (1997) 35° (2000) 0.13" NA
Sep 4 13.3° 26.7° 6° (1997) 33° (1999) 0.13" NA
Sep 5 13.3° 26.1° 6° (1974) 35° (1999) 0.13" NA
Sep 6 12.8° 26.1° 4° (1988) 35° (1990) 0.13" NA
Sep 7 12.8° 26.1° 3° (1986) 35° (1978) 0.13" NA
Sep 8 12.8° 26.1° 3° (1986) 36° (1978) 0.13" NA
Sep 9 12.2° 26.1° 6° (1986) 34° (1971) 0.13" NA
Sep 10 12.2° 25.6° 5° (1967) 34° (1978) 0.13" NA
Sep 11 12.2° 25.6° 4° (1967) 34° (1978) 0.12" NA
Sep 12 11.7° 25.6° 5° (2007) 35° (2000) 0.12" NA
Sep 13 11.7° 25° 2° (1975) 35° (1991) 0.12" NA
Sep 14 11.7° 25° 3° (1974) 34° (1998) 0.12" NA
Sep 15 11.1° 25° 2° (1984) 32° (1994) 0.12" NA
Sep 16 11.1° 25° 2.2° (2007) 33° (1978) 0.12" NA
Sep 17 10.6° 24.4° 5° (1990) 33° (1972) 0.12" NA
Sep 18 10.6° 24.4° 2° (1973) 33° (1988) 0.12" NA
Sep 19 10.6° 24.4° 2° (1991) 34° (1978) 0.12" NA
Sep 20 10° 23.9° 0° (1991) 32° (1978) 0.12" NA
Sep 21 10° 23.9° 1° (1991) 31° (1980) 0.12" NA
Sep 22 10° 23.9° 0° (1974) 31.7° (2007) 0.12" NA
Sep 23 9.4° 23.3° -3° (1974) 32° (1988) 0.12" NA
Sep 24 9.4° 23.3° -1° (1989) 31.1° (2007) 0.11" NA
Sep 25 8.9° 23.3° 1° (1984) 32.8° (2007) 0.11" NA
Sep 26 8.9° 22.8° 1° (1984) 32° (1999) 0.11" NA
Sep 27 8.9° 22.8° 1° (1975) 32° (1998) 0.11" NA
Sep 28 8.3° 22.8° -1° (1984) 32° (1998) 0.11" NA
Sep 29 8.3° 22.2° -1° (1967) 31° (1986) 0.11" NA
Sep 30 7.8° 22.2° -1° (1993) 32° (2002) 0.11" NA
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