New Windsor, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 12° 30° -27° (1979) 69° (1989) 1.58" 10.2"
February 18° 36° -28° (1996) 79° (1931) 1.51" 7"
March 29° 48° -19° (1960) 88° (1986) 2.92" 4.9"
April 39° 62° 7° (1982) 93° (1986) 3.82" 1.3"
May 50° 73° 25° (2005) 104° (1934) 4.25" 0"
June 60° 83° 39° (1993) 104° (1988) 4.63" 0"
July 65° 86° 46° (1971) 111° (1936) 4.03" 0"
August 62° 84° 40° (1986) 106° (1936) 4.41" 0"
September 53° 77° 24° (1942) 100° (1939) 3.16" 0"
October 42° 64° 11° (1925) 95° (2006) 2.8" 0.2"
November 30° 48° -9° (1976) 80° (2000) 2.73" 3"
December 18° 34° -24° (1989) 71° (1998) 2.2" 8.4"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 24° 40° 5° (1942) 63° (1962) 0.08" NA
Dec 2 23° 40° -2° (1942) 65° (1982) 0.08" NA
Dec 3 23° 39° -4° (1940) 69° (1970) 0.08" NA
Dec 4 23° 39° -2° (1991) 71° (1998) 0.08" NA
Dec 5 22° 38° -4° (2005) 69° (2001) 0.08" NA
Dec 6 22° 38° -5° (1977) 63° (1951) 0.08" NA
Dec 7 21° 37° -12° (1976) 66° (1916) 0.08" NA
Dec 8 21° 37° -9° (1917) 67° (1991) 0.08" NA
Dec 9 21° 37° -12° (1978) 64° (1918) 0.08" NA
Dec 10 20° 36° -16° (1972) 60° (1979) 0.08" NA
Dec 11 20° 36° -18° (1972) 67° (1949) 0.08" NA
Dec 12 19° 35° -11° (2000) 65° (1991) 0.07" NA
Dec 13 19° 35° -15° (1903) 63° (1975) 0.07" NA
Dec 14 19° 35° -13° (1901) 61° (1975) 0.07" NA
Dec 15 18° 34° -16° (1989) 57° (1959) 0.07" NA
Dec 16 18° 34° -16° (1932) 60° (1939) 0.07" NA
Dec 17 18° 34° -15° (1932) 59° (1939) 0.07" NA
Dec 18 17° 33° -16° (1985) 65° (1939) 0.07" NA
Dec 19 17° 33° -18° (1985) 57° (1988) 0.07" NA
Dec 20 17° 33° -14° (1963) 58° (1967) 0.07" NA
Dec 21 16° 33° -22° (1963) 60° (1941) 0.07" NA
Dec 22 16° 32° -21° (1963) 58° (1933) 0.07" NA
Dec 23 16° 32° -24° (1989) 59° (1982) 0.07" NA
Dec 24 16° 32° -19° (1983) 58° (1955) 0.06" NA
Dec 25 15° 32° -18° (2000) 59° (1936) 0.06" NA
Dec 26 15° 31° -19° (1962) 56° (1936) 0.06" NA
Dec 27 15° 31° -15° (1933) 62° (1946) 0.06" NA
Dec 28 14° 31° -20° (1924) 67° (1984) 0.06" NA
Dec 29 14° 31° -11° (1917) 65° (1984) 0.06" NA
Dec 30 14° 31° -10° (1909) 61° (2002) 0.06" NA
Dec 31 14° 30° -17° (1967) 61° (1965) 0.06" NA
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