Plainfield, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 17° 31° -26° (1985) 65° (1997) 1.8" NA
February 21° 36° -20° (1979) 73° (2000) 1.79" NA
March 29° 47° -7° (2002) 86° (1986) 2.25" NA
April 39° 61° 11° (1982) 92° (1986) 3.49" NA
May 49° 71° 30° (2005) 93° (2006) 4.08" NA
June 60° 81° 35° (1985) 104° (1988) 3.88" NA
July 64° 84° 47° (1983) 103° (1995) 4.33" NA
August 63° 82° 39° (1986) 102° (1988) 4.16" NA
September 55° 76° 32° (1983) 97° (1978) 3.01" NA
October 43° 64° 17° (1976) 88° (2007) 2.84" NA
November 33° 49° -2° (1977) 78° (1978) 3.06" NA
December 21° 35° -20° (1983) 70° (1982) 2.2" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 26° 41° 7° (1976) 61° (1998) 0.1" NA
Dec 2 26° 40° 4° (1976) 65° (1982) 0.09" NA
Dec 3 25° 40° 2° (1976) 70° (1982) 0.09" NA
Dec 4 25° 39° 0° (1991) 67° (1998) 0.09" NA
Dec 5 24° 39° -4° (1991) 67° (1998) 0.09" NA
Dec 6 24° 38° -4° (1977) 68° (2001) 0.08" NA
Dec 7 24° 38° -6° (1977) 62° (1980) 0.09" NA
Dec 8 23° 38° -6° (1977) 57° (1980) 0.08" NA
Dec 9 23° 37° -7° (1977) 60° (1991) 0.09" NA
Dec 10 22° 37° -11° (1977) 54° (1993) 0.08" NA
Dec 11 22° 36° -11° (1977) 56° (1979) 0.08" NA
Dec 12 22° 36° -3° (1977) 57° (1979) 0.08" NA
Dec 13 21° 36° -3° (2000) 61° (1991) 0.08" NA
Dec 14 21° 35° -6° (1985) 64° (1975) 0.07" NA
Dec 15 21° 35° -8° (1989) 65° (1975) 0.07" NA
Dec 16 20° 35° -11° (1989) 57° (1984) 0.06" NA
Dec 17 20° 34° -11° (1989) 62° (1984) 0.07" NA
Dec 18 20° 34° -10° (1985) 55° (1977) 0.06" NA
Dec 19 20° 34° -12° (1983) 53° (1998) 0.06" NA
Dec 20 19° 34° -13° (1983) 55° (1988) 0.06" NA
Dec 21 19° 33° -13° (1989) 58° (1988) 0.06" NA
Dec 22 19° 33° -19° (1989) 54° (1984) 0.06" NA
Dec 23 19° 33° -17° (1989) 53° (1982) 0.06" NA
Dec 24 18° 33° -20° (1983) 61° (1982) 0.05" NA
Dec 25 18° 33° -20° (1983) 62° (1982) 0.06" NA
Dec 26 18° 32° -13° (1983) 62° (1982) 0.06" NA
Dec 27 18° 32° -5° (1977) 54° (2008) 0.06" NA
Dec 28 18° 32° -5° (1977) 63° (1982) 0.05" NA
Dec 29 18° 32° -8° (1983) 66° (1984) 0.06" NA
Dec 30 17° 32° -11° (1983) 60° (1984) 0.05" NA
Dec 31 17° 32° -14° (1976) 61° (2002) 0.06" NA
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