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
May 1 43° 66° 28° (1978) 90° (1952) 0.11" NA
May 2 43° 66° 26° (1978) 89° (1959) 0.11" NA
May 3 43° 66° 22° (2005) 89° (1968) 0.11" NA
May 4 44° 67° 25° (2005) 91° (1959) 0.11" NA
May 5 44° 67° 30° (1954) 92° (1959) 0.11" NA
May 6 45° 67° 32° (1958) 90° (1959) 0.11" NA
May 7 45° 68° 30° (1974) 88° (1965) 0.11" NA
May 8 45° 68° 31° (1956) 91° (1963) 0.11" NA
May 9 46° 68° 26° (1983) 92° (1963) 0.11" NA
May 10 46° 69° 29° (1966) 91° (1963) 0.11" NA
May 11 47° 69° 34° (1949) 90° (1956) 0.11" NA
May 12 47° 70° 32° (1981) 93° (1956) 0.11" NA
May 13 47° 70° 35° (1974) 91° (1956) 0.11" NA
May 14 48° 70° 36° (1953) 88° (1962) 0.11" NA
May 15 48° 71° 37° (1997) 89° (1958) 0.11" NA
May 16 49° 71° 30° (1997) 90° (1962) 0.11" NA
May 17 49° 71° 35° (1997) 90° (1962) 0.11" NA
May 18 49° 72° 32° (2002) 92° (1962) 0.11" NA
May 19 50° 72° 35° (2002) 92° (1962) 0.11" NA
May 20 50° 72° 34° (1954) 92° (1975) 0.11" NA
May 21 50° 73° 30° (2002) 90° (1972) 0.11" NA
May 22 51° 73° 34° (2002) 92° (1964) 0.11" NA
May 23 51° 73° 36° (1958) 91° (1964) 0.12" NA
May 24 52° 74° 36° (1956) 92° (1975) 0.12" NA
May 25 52° 74° 36° (1976) 93° (1967) 0.12" NA
May 26 52° 74° 37° (1979) 92° (1977) 0.12" NA
May 27 53° 75° 35° (1971) 92° (1977) 0.12" NA
May 28 53° 75° 38° (1949) 91° (2006) 0.12" NA
May 29 53° 75° 36° (1965) 92° (2006) 0.13" NA
May 30 54° 76° 38° (1996) 92° (2006) 0.13" NA
May 31 54° 76° 40° (1990) 91° (1953) 0.13" NA
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