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
May 1 7.8° 21.1° 2° (1978) 30° (1992) 0.14" NA
May 2 7.8° 21.1° 2° (1978) 29° (1992) 0.14" NA
May 3 8.3° 21.7° 2° (2005) 28° (2001) 0.15" NA
May 4 8.3° 21.7° 1° (2005) 29° (2001) 0.15" NA
May 5 8.9° 21.7° 1° (2005) 30° (1982) 0.15" NA
May 6 8.9° 22.2° 2° (1989) 31° (1982) 0.15" NA
May 7 8.9° 22.2° 1° (1989) 28° (1983) 0.15" NA
May 8 9.4° 22.2° 1° (1989) 29° (1979) 0.15" NA
May 9 9.4° 22.2° 2° (1980) 32° (1979) 0.15" NA
May 10 9.4° 22.8° 1° (1980) 31° (2003) 0.15" NA
May 11 10° 22.8° 4° (1981) 33° (2005) 0.16" NA
May 12 10° 22.8° 4° (1981) 31° (2000) 0.16" NA
May 13 10° 23.3° 4° (1989) 29° (1988) 0.16" NA
May 14 10.6° 23.3° 5° (1980) 31° (1991) 0.16" NA
May 15 10.6° 23.3° 4° (1981) 33° (1988) 0.16" NA
May 16 10.6° 23.9° 3° (1997) 32° (1977) 0.16" NA
May 17 11.1° 23.9° 3° (1997) 31° (1992) 0.16" NA
May 18 11.1° 23.9° 5° (1985) 33° (1996) 0.15" NA
May 19 11.1° 24.4° 6° (2002) 33° (1996) 0.15" NA
May 20 11.7° 24.4° 6° (1981) 33° (1996) 0.15" NA
May 21 11.7° 24.4° 5° (2002) 31° (1988) 0.15" NA
May 22 11.7° 25° 5° (2002) 31° (1988) 0.15" NA
May 23 12.2° 25° 8° (1979) 29° (1977) 0.15" NA
May 24 12.2° 25° 7° (1979) 29° (1977) 0.15" NA
May 25 12.2° 25.6° 6° (1992) 31° (1978) 0.14" NA
May 26 12.8° 25.6° 6° (1979) 32° (1977) 0.14" NA
May 27 12.8° 25.6° 4° (1992) 33° (1977) 0.14" NA
May 28 12.8° 25.6° 4° (1992) 33.3° (2006) 0.14" NA
May 29 13.3° 26.1° 5° (1992) 33.3° (2006) 0.14" NA
May 30 13.3° 26.1° 7° (1984) 33.3° (2006) 0.13" NA
May 31 13.3° 26.7° 7° (1984) 32° (1991) 0.13" NA
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