Dewey, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 16° 34° -27° (1985) 68° (1950) 2.07" NA
February 20° 39° -19° (1996) 72° (2000) 2.1" NA
March 30° 50° -13° (1980) 85° (1986) 2.98" NA
April 40° 64° 10° (1982) 90° (1986) 3.84" NA
May 51° 74° 26° (2002) 97° (1991) 4.36" NA
June 62° 84° 38° (1993) 104° (1988) 3.94" NA
July 65° 87° 43° (2001) 109° (1954) 4.59" NA
August 62° 85° 38° (1986) 102° (1988) 4.05" NA
September 54° 79° 29° (2001) 101° (1953) 3.09" NA
October 42° 66° 21° (2000) 93° (2007) 3.32" NA
November 32° 52° -5° (1950) 81° (1968) 3.47" NA
December 21° 38° -22° (1989) 70° (1998) 2.59" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Apr 1 35° 58° 20° (2002) 85° (1981) 0.11" NA
Apr 2 35° 58° 22° (1961) 82° (2003) 0.12" NA
Apr 3 36° 58° 21° (1993) 80° (1956) 0.11" NA
Apr 4 36° 59° 17° (2002) 80° (2003) 0.12" NA
Apr 5 36° 59° 17° (2002) 80° (2005) 0.11" NA
Apr 6 37° 60° 15° (1982) 83° (1988) 0.12" NA
Apr 7 37° 60° 10° (1982) 84° (1991) 0.12" NA
Apr 8 37° 61° 18° (1996) 85° (1991) 0.12" NA
Apr 9 38° 61° 17° (1997) 85° (2001) 0.12" NA
Apr 10 38° 61° 16° (1997) 86° (2001) 0.12" NA
Apr 11 39° 62° 24° (1973) 82° (1977) 0.12" NA
Apr 12 39° 62° 23° (1957) 84° (1971) 0.11" NA
Apr 13 39° 63° 20° (1950) 83° (1971) 0.13" NA
Apr 14 40° 63° 24° (1997) 86° (2010) 0.12" NA
Apr 15 40° 63° 25° (1997) 86° (2003) 0.13" NA
Apr 16 40° 64° 26° (1988) 88° (2002) 0.13" NA
Apr 17 41° 64° 22° (2001) 87° (2002) 0.14" NA
Apr 18 41° 65° 23° (2001) 88° (2002) 0.13" NA
Apr 19 41° 65° 25° (1988) 89° (2002) 0.14" NA
Apr 20 42° 65° 25° (1983) 87° (2002) 0.14" NA
Apr 21 42° 66° 30° (1950) 88° (1985) 0.14" NA
Apr 22 43° 66° 30° (1986) 88° (1985) 0.13" NA
Apr 23 43° 66° 28° (1956) 88° (1980) 0.14" NA
Apr 24 43° 67° 28° (1956) 83° (1954) 0.14" NA
Apr 25 44° 67° 28° (2002) 87° (1989) 0.14" NA
Apr 26 44° 68° 28° (2002) 90° (1986) 0.14" NA
Apr 27 44° 68° 28° (1976) 88° (1994) 0.14" NA
Apr 28 45° 68° 30° (1976) 86° (1952) 0.14" NA
Apr 29 45° 69° 27° (1977) 86° (1970) 0.13" NA
Apr 30 46° 69° 32° (1958) 87° (1965) 0.14" NA
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