Quincy, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January -9° -29.4° (1979) 21.1° (2004) 1.36" NA
February -6° -27.2° (1979) 23.3° (1996) 1.74" NA
March -1° 11° -24.4° (1978) 29.4° (1986) 2.93" NA
April 18° -8.3° (1982) 33.3° (1986) 3.48" NA
May 11° 24° 0.6° (2005) 33.3° (2006) 4.61" NA
June 16° 29° 7.2° (1993) 38.9° (1988) 3.26" NA
July 19° 31° 11.1° (1983) 40.6° (2005) 3.89" NA
August 17° 30° 6.7° (1974) 40.6° (2003) 3.09" NA
September 13° 26° 0° (1983) 36.7° (2000) 3.45" NA
October 19° -5.6° (1981) 33.9° (1997) 2.5" NA
November 11° -17.8° (1953) 28.3° (1987) 3.1" NA
December -6° -27.8° (1983) 21.7° (1984) 2.22" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 15.6° 27.8° 9° (1967) 37° (2000) 0.11" NA
Sep 2 15° 27.8° 10° (1967) 37° (1984) 0.11" NA
Sep 3 15° 27.8° 11° (1967) 37° (2000) 0.11" NA
Sep 4 15° 27.8° 10° (1984) 34° (1998) 0.11" NA
Sep 5 14.4° 27.2° 9° (1997) 36° (1990) 0.12" NA
Sep 6 14.4° 27.2° 7° (1988) 37° (1990) 0.12" NA
Sep 7 14.4° 27.2° 7° (1988) 37° (1990) 0.12" NA
Sep 8 13.9° 26.7° 8° (1988) 37° (1978) 0.12" NA
Sep 9 13.9° 26.7° 9° (1981) 35° (1980) 0.12" NA
Sep 10 13.9° 26.7° 8° (1967) 35° (1983) 0.12" NA
Sep 11 13.9° 26.1° 8° (1967) 35° (1978) 0.12" NA
Sep 12 13.3° 26.1° 9° (1992) 34° (2000) 0.12" NA
Sep 13 13.3° 26.1° 9° (1992) 34° (1980) 0.12" NA
Sep 14 13.3° 25.6° 8° (1996) 33° (1991) 0.12" NA
Sep 15 12.8° 25.6° 6° (1979) 33° (1991) 0.12" NA
Sep 16 12.8° 25.6° 5° (1979) 32° (1992) 0.12" NA
Sep 17 12.2° 25.6° 5° (1979) 34° (1997) 0.12" NA
Sep 18 12.2° 25° 6° (1981) 33° (1988) 0.12" NA
Sep 19 12.2° 25° 4° (1991) 34.4° (2007) 0.12" NA
Sep 20 11.7° 25° 3° (1991) 33° (1978) 0.12" NA
Sep 21 11.7° 24.4° 2° (1991) 33.9° (2007) 0.12" NA
Sep 22 11.7° 24.4° 2° (1983) 33.3° (2007) 0.12" NA
Sep 23 11.1° 24.4° 0° (1983) 31° (2000) 0.11" NA
Sep 24 11.1° 23.9° 2° (1983) 33.9° (2007) 0.11" NA
Sep 25 10.6° 23.9° 1° (1989) 33.9° (2007) 0.11" NA
Sep 26 10.6° 23.3° 1° (1989) 32° (1999) 0.11" NA
Sep 27 10.6° 23.3° 3° (1984) 31° (1998) 0.11" NA
Sep 28 10° 23.3° 2° (1985) 32° (1990) 0.1" NA
Sep 29 10° 22.8° 2° (1984) 30° (1979) 0.1" NA
Sep 30 9.4° 22.8° 1° (1984) 33° (2002) 0.1" NA
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