Unionville, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 24° 42° -21° (1984) 73° (1967) 3.54" 1.3"
February 28° 47° -9° (1985) 74° (1981) 4.09" 1.7"
March 35° 57° 0° (1978) 83° (1986) 4.17" 0.9"
April 45° 68° 21° (1982) 89° (1987) 4.6" 0"
May 55° 76° 32° (1976) 94° (1987) 5.08" 0"
June 63° 84° 42° (1972) 100° (1988) 3.91" 0"
July 68° 88° 0° (2005) 105° (1999) 4.09" 0"
August 66° 88° 42° (1986) 103° (2007) 2.86" 0"
September 58° 81° 29° (1983) 99° (1999) 3.48" 0"
October 46° 70° 18° (1981) 92° (1999) 3.93" 0"
November 36° 57° 9° (1986) 85° (2000) 4.16" 0.2"
December 27° 45° -13° (1989) 74° (1982) 4.45" 0.9"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 31° 49° 12° (1964) 68° (1962) 0.15" 0"
Dec 2 31° 49° 15° (1979) 74° (1982) 0.14" 0"
Dec 3 30° 48° 16° (1979) 73° (1982) 0.16" 0"
Dec 4 30° 48° 16° (1991) 69° (2001) 0.15" 0.1"
Dec 5 30° 47° 17° (2006) 69° (1998) 0.14" 0"
Dec 6 30° 47° 13° (1977) 69° (1998) 0.15" 0"
Dec 7 29° 47° 2° (1984) 69° (1966) 0.15" 0"
Dec 8 29° 46° 14° (2006) 71° (1966) 0.16" 0.1"
Dec 9 29° 46° 5° (1995) 65° (1966) 0.16" 0"
Dec 10 28° 46° 5° (1977) 72° (1971) 0.16" 0"
Dec 11 28° 45° 3° (1962) 66° (1996) 0.16" 0"
Dec 12 28° 45° -7° (1962) 68° (1965) 0.15" 0.1"
Dec 13 28° 45° -3° (1962) 69° (1984) 0.14" 0"
Dec 14 27° 45° 2° (2010) 68° (1971) 0.15" 0"
Dec 15 27° 44° 1° (2010) 70° (1984) 0.14" 0.1"
Dec 16 27° 44° -3° (1989) 69° (1984) 0.14" 0"
Dec 17 27° 44° -2° (1989) 65° (1984) 0.14" 0"
Dec 18 26° 44° 5° (1964) 65° (1976) 0.14" 0.1"
Dec 19 26° 43° -1° (1963) 63° (1967) 0.14" 0"
Dec 20 26° 43° 0° (1989) 64° (1967) 0.13" 0"
Dec 21 26° 43° -6° (1989) 69° (1967) 0.14" 0.1"
Dec 22 26° 43° -13° (1989) 64° (1965) 0.14" 0"
Dec 23 25° 43° -10° (1989) 63° (1982) 0.15" 0"
Dec 24 25° 43° -7° (1983) 66° (1964) 0.14" 0"
Dec 25 25° 42° -11° (1983) 68° (1982) 0.14" 0.1"
Dec 26 25° 42° 1° (1983) 67° (1971) 0.14" 0"
Dec 27 25° 42° 11° (1962) 68° (1971) 0.13" 0"
Dec 28 25° 42° 12° (1962) 69° (2008) 0.13" 0.1"
Dec 29 25° 42° 1° (1983) 69° (1984) 0.13" 0"
Dec 30 24° 42° -11° (1983) 66° (1971) 0.13" 0"
Dec 31 24° 42° -5° (1983) 66° (1965) 0.13" 0.1"
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