Annawan, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 13° 30° -26° (1999) 65° (1990) 1.59" 7.9"
February 17° 35° -23° (1996) 70° (1954) 1.82" 6.2"
March 27° 47° -11° (1978) 85° (1986) 2.63" 2.7"
April 38° 61° -2° (1982) 91° (2002) 3.43" 0.8"
May 49° 71° 22° (2005) 93° (1967) 4.14" 0"
June 59° 80° 38° (1988) 101° (1971) 4.58" 0"
July 63° 84° 42° (1983) 104° (1983) 3.94" 0"
August 60° 82° 38° (1986) 103° (1953) 4.22" 0"
September 51° 75° 26° (1974) 102° (1953) 3.51" 0"
October 40° 63° 17° (1988) 91° (1954) 2.87" 0.2"
November 30° 48° -4° (1959) 79° (2000) 2.83" 0.7"
December 17° 34° -24° (1983) 67° (1998) 2.12" 8.1"
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) 0.13" 0"
May 2 44° 67° 26° (1978) 89° (1959) 0.13" 0"
May 3 44° 67° 22° (2005) 89° (1968) 0.13" 0"
May 4 45° 67° 25° (2005) 91° (1959) 0.13" 0"
May 5 45° 68° 30° (1954) 92° (1959) 0.14" 0"
May 6 45° 68° 32° (1958) 90° (1959) 0.13" 0"
May 7 46° 68° 30° (1974) 88° (1965) 0.13" 0"
May 8 46° 69° 31° (1956) 91° (1963) 0.13" 0"
May 9 46° 69° 26° (1983) 92° (1963) 0.13" 0"
May 10 47° 69° 29° (1966) 91° (1963) 0.13" 0"
May 11 47° 70° 34° (1949) 90° (1956) 0.14" 0"
May 12 48° 70° 32° (1981) 93° (1956) 0.13" 0"
May 13 48° 70° 35° (1974) 91° (1956) 0.14" 0"
May 14 48° 71° 36° (1953) 88° (1962) 0.14" 0"
May 15 49° 71° 37° (1997) 89° (1958) 0.13" 0"
May 16 49° 71° 30° (1997) 90° (1962) 0.13" 0"
May 17 49° 72° 35° (1997) 90° (1962) 0.13" 0"
May 18 50° 72° 32° (2002) 92° (1962) 0.14" 0"
May 19 50° 72° 35° (2002) 92° (1962) 0.13" 0"
May 20 51° 73° 34° (1954) 92° (1975) 0.14" 0"
May 21 51° 73° 30° (2002) 90° (1972) 0.14" 0"
May 22 51° 73° 34° (2002) 92° (1964) 0.14" 0"
May 23 52° 73° 36° (1958) 91° (1964) 0.14" 0"
May 24 52° 74° 36° (1956) 92° (1975) 0.15" 0"
May 25 52° 74° 36° (1976) 93° (1967) 0.13" 0"
May 26 53° 74° 37° (1979) 92° (1977) 0.14" 0"
May 27 53° 75° 35° (1971) 92° (1977) 0.13" 0"
May 28 54° 75° 38° (1949) 91° (2006) 0.13" 0"
May 29 54° 75° 36° (1965) 92° (2006) 0.12" 0"
May 30 54° 76° 38° (1996) 92° (2006) 0.13" 0"
May 31 55° 76° 40° (1990) 91° (1953) 0.13" 0"
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