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
Jul 1 17.8° 30.6° 12° (1977) 35° (1991) 0.12" NA
Jul 2 17.8° 30.6° 13° (1977) 37° (1980) 0.12" NA
Jul 3 18.3° 30.6° 14° (2005) 37° (1980) 0.12" NA
Jul 4 18.3° 31.1° 14° (1997) 37° (1990) 0.12" NA
Jul 5 18.3° 31.1° 13° (1997) 38° (1990) 0.12" NA
Jul 6 18.3° 31.1° 11° (1983) 37° (1977) 0.12" NA
Jul 7 18.3° 31.1° 11° (1983) 37° (1977) 0.13" NA
Jul 8 18.3° 31.1° 11° (1983) 37° (1989) 0.13" NA
Jul 9 18.3° 31.1° 13° (1983) 38° (1989) 0.13" NA
Jul 10 18.3° 31.1° 14° (1996) 37° (1980) 0.13" NA
Jul 11 18.9° 31.1° 13° (1996) 39° (1984) 0.13" NA
Jul 12 18.9° 31.1° 13° (1996) 37° (1980) 0.13" NA
Jul 13 18.9° 31.1° 14° (1999) 37° (1980) 0.13" NA
Jul 14 18.9° 31.1° 14° (1990) 38° (1977) 0.13" NA
Jul 15 18.9° 31.1° 14° (1990) 38° (1980) 0.13" NA
Jul 16 18.9° 31.1° 16° (1985) 39° (1980) 0.13" NA
Jul 17 18.9° 31.1° 16° (1985) 37.2° (2006) 0.13" NA
Jul 18 18.9° 31.1° 15° (1979) 36° (1977) 0.13" NA
Jul 19 18.9° 31.1° 13° (1979) 37° (1977) 0.13" NA
Jul 20 18.9° 31.7° 13° (1979) 39° (1980) 0.13" NA
Jul 21 18.9° 31.7° 15° (1979) 39° (2005) 0.13" NA
Jul 22 18.9° 31.7° 15° (2007) 38° (2005) 0.13" NA
Jul 23 18.9° 31.1° 15° (2000) 38° (1983) 0.13" NA
Jul 24 18.9° 31.1° 14° (1985) 38° (2005) 0.13" NA
Jul 25 18.9° 31.1° 14° (1985) 41° (2005) 0.12" NA
Jul 26 18.9° 31.1° 12° (1977) 40° (2005) 0.12" NA
Jul 27 18.9° 31.1° 13° (1977) 38° (1997) 0.12" NA
Jul 28 18.9° 31.1° 13° (1977) 38° (1999) 0.12" NA
Jul 29 18.3° 31.1° 13° (1981) 38° (1983) 0.12" NA
Jul 30 18.3° 31.1° 13° (1981) 39° (1999) 0.12" NA
Jul 31 18.3° 31.1° 12° (1977) 40° (1980) 0.11" NA
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