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
Jun 1 57° 80° 38° (1993) 95° (1988) 0.13" NA
Jun 2 58° 80° 43° (1966) 94° (1991) 0.14" NA
Jun 3 58° 81° 39° (1969) 96° (1972) 0.14" NA
Jun 4 58° 81° 43° (2001) 94° (1972) 0.13" NA
Jun 5 59° 81° 43° (1951) 94° (2002) 0.13" NA
Jun 6 59° 82° 40° (2000) 94° (1971) 0.14" NA
Jun 7 59° 82° 41° (1977) 98° (1999) 0.14" NA
Jun 8 60° 82° 42° (1977) 96° (1958) 0.14" NA
Jun 9 60° 83° 42° (1977) 95° (1999) 0.13" NA
Jun 10 60° 83° 44° (1972) 95° (1968) 0.13" NA
Jun 11 61° 83° 42° (1972) 95° (1954) 0.13" NA
Jun 12 61° 84° 47° (1985) 94° (1956) 0.12" NA
Jun 13 61° 84° 42° (1985) 95° (1952) 0.12" NA
Jun 14 62° 84° 47° (2002) 96° (1954) 0.13" NA
Jun 15 62° 84° 49° (1961) 101° (1987) 0.13" NA
Jun 16 62° 85° 45° (1969) 97° (1994) 0.13" NA
Jun 17 63° 85° 45° (1972) 97° (2007) 0.13" NA
Jun 18 63° 85° 44° (1999) 98° (1987) 0.13" NA
Jun 19 63° 85° 50° (1965) 101° (1953) 0.13" NA
Jun 20 63° 86° 46° (1980) 104° (1953) 0.13" NA
Jun 21 64° 86° 40° (1992) 100° (1988) 0.14" NA
Jun 22 64° 86° 44° (1992) 99° (1988) 0.12" NA
Jun 23 64° 86° 48° (1972) 96° (2002) 0.13" NA
Jun 24 64° 86° 45° (1972) 97° (1953) 0.13" NA
Jun 25 64° 87° 47° (2004) 104° (1988) 0.13" NA
Jun 26 64° 87° 47° (2004) 101° (1954) 0.14" NA
Jun 27 65° 87° 48° (1987) 98° (1998) 0.13" NA
Jun 28 65° 87° 51° (1987) 100° (1952) 0.13" NA
Jun 29 65° 87° 41° (1988) 100° (1952) 0.13" NA
Jun 30 65° 87° 50° (1982) 99° (1991) 0.13" NA
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