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
Sep 1 59° 81° 41° (1967) 99° (1953) 0.13" NA
Sep 2 58° 81° 38° (1946) 99° (1953) 0.13" NA
Sep 3 58° 80° 43° (1974) 98° (1913) 0.12" NA
Sep 4 58° 80° 39° (1974) 98° (1925) 0.12" NA
Sep 5 57° 80° 42° (1974) 96° (1912) 0.12" NA
Sep 6 57° 79° 40° (1988) 100° (1922) 0.12" NA
Sep 7 57° 79° 39° (1956) 99° (1939) 0.12" NA
Sep 8 56° 79° 38° (1986) 98° (1922) 0.11" NA
Sep 9 56° 79° 44° (1995) 99° (1933) 0.11" NA
Sep 10 55° 78° 42° (1943) 95° (1983) 0.11" NA
Sep 11 55° 78° 40° (1940) 97° (2000) 0.11" NA
Sep 12 55° 78° 38° (1955) 96° (1927) 0.11" NA
Sep 13 54° 77° 36° (1902) 97° (1939) 0.11" NA
Sep 14 54° 77° 39° (1974) 99° (1939) 0.11" NA
Sep 15 54° 77° 36° (2007) 100° (1939) 0.1" NA
Sep 16 53° 76° 37° (1984) 92° (1931) 0.1" NA
Sep 17 53° 76° 35° (1937) 96° (1927) 0.1" NA
Sep 18 53° 76° 35° (1929) 92° (2007) 0.1" NA
Sep 19 52° 76° 34° (1991) 93° (1948) 0.1" NA
Sep 20 52° 75° 30° (1991) 92° (1931) 0.1" NA
Sep 21 51° 75° 32° (1991) 92° (2007) 0.1" NA
Sep 22 51° 75° 32° (1995) 95° (1937) 0.1" NA
Sep 23 51° 74° 31° (1995) 91° (2007) 0.1" NA
Sep 24 50° 74° 30° (1989) 91° (2007) 0.09" NA
Sep 25 50° 73° 30° (1942) 91° (1933) 0.09" NA
Sep 26 49° 73° 32° (1940) 89° (1998) 0.09" NA
Sep 27 49° 73° 30° (1942) 90° (1990) 0.09" NA
Sep 28 49° 72° 24° (1942) 95° (1953) 0.09" NA
Sep 29 48° 72° 30° (1984) 99° (1953) 0.09" NA
Sep 30 48° 72° 30° (1984) 92° (1952) 0.09" NA
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