Annawan, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 10° 28° -26° (1999) 65° (1990) 1.55" NA
February 16° 34° -23° (1996) 70° (1954) 1.41" NA
March 26° 46° -11° (1978) 85° (1986) 2.49" NA
April 37° 60° -2° (1982) 91° (2002) 3.48" NA
May 48° 71° 22° (2005) 93° (1967) 3.53" NA
June 59° 80° 38° (1988) 101° (1971) 4.46" NA
July 62° 84° 42° (1983) 104° (1983) 3.98" NA
August 60° 82° 38° (1986) 103° (1953) 4.14" NA
September 51° 75° 26° (1974) 102° (1953) 3.04" NA
October 39° 63° 17° (1988) 91° (1954) 2.57" NA
November 29° 47° -4° (1959) 79° (2000) 2.74" NA
December 17° 33° -24° (1983) 67° (1998) 2.37" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 56° 79° 38° (1949) 101° (1953) 0.12" NA
Sep 2 56° 79° 39° (1949) 102° (1953) 0.12" NA
Sep 3 55° 78° 42° (1952) 97° (1953) 0.12" NA
Sep 4 55° 78° 40° (1974) 95° (1954) 0.12" NA
Sep 5 55° 78° 38° (1974) 95° (1954) 0.11" NA
Sep 6 54° 78° 37° (1988) 97° (1960) 0.11" NA
Sep 7 54° 78° 39° (1956) 96° (1959) 0.11" NA
Sep 8 54° 77° 37° (1986) 95° (1971) 0.11" NA
Sep 9 53° 77° 41° (1986) 97° (1955) 0.11" NA
Sep 10 53° 77° 39° (1949) 94° (1983) 0.11" NA
Sep 11 52° 76° 40° (1993) 94° (1983) 0.11" NA
Sep 12 52° 76° 40° (1958) 94° (1962) 0.1" NA
Sep 13 52° 76° 34° (1953) 93° (1956) 0.1" NA
Sep 14 51° 76° 36° (1974) 89° (1962) 0.1" NA
Sep 15 51° 75° 36° (1985) 91° (1955) 0.1" NA
Sep 16 51° 75° 34° (1984) 90° (1955) 0.1" NA
Sep 17 50° 75° 37° (1984) 93° (1954) 0.1" NA
Sep 18 50° 74° 38° (1959) 92° (1954) 0.1" NA
Sep 19 49° 74° 41° (1992) 93° (1948) 0.1" NA
Sep 20 49° 74° 28° (1956) 90° (1978) 0.09" NA
Sep 21 49° 73° 37° (1983) 88° (1970) 0.09" NA
Sep 22 48° 73° 30° (1974) 89° (1959) 0.09" NA
Sep 23 48° 73° 26° (1974) 91° (1988) 0.09" NA
Sep 24 47° 72° 27° (1995) 89° (1958) 0.09" NA
Sep 25 47° 72° 32° (1995) 89° (2007) 0.09" NA
Sep 26 47° 72° 33° (1984) 89° (1951) 0.09" NA
Sep 27 46° 71° 33° (1975) 89° (1954) 0.09" NA
Sep 28 46° 71° 32° (1957) 90° (1952) 0.09" NA
Sep 29 46° 70° 32° (1984) 94° (1953) 0.09" NA
Sep 30 45° 70° 28° (1984) 90° (1952) 0.09" NA
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