Naperville, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 14° 32° -26° (1985) 65° (1989) 1.85" NA
February 19° 38° -21° (1977) 74° (2000) 1.56" NA
March 28° 50° -10° (1962) 85° (1986) 2.62" NA
April 38° 63° 4° (1982) 90° (2002) 3.8" NA
May 48° 75° 25° (1966) 95° (1967) 3.94" NA
June 57° 84° 32° (1972) 103° (1988) 3.91" NA
July 63° 87° 41° (1967) 105° (1995) 3.97" NA
August 61° 85° 38° (1963) 100° (1991) 4.6" NA
September 53° 78° 27° (1974) 100° (1953) 3.38" NA
October 42° 67° 14° (1988) 90° (1971) 2.66" NA
November 32° 50° -4° (1950) 78° (1978) 3.2" NA
December 20° 37° -21° (1983) 70° (2001) 2.45" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Jun 1 53° 80° 34° (2003) 93° (1988) 0.13" NA
Jun 2 53° 81° 36° (2003) 93° (2002) 0.13" NA
Jun 3 54° 81° 37° (1977) 94° (1972) 0.13" NA
Jun 4 54° 81° 36° (1969) 93° (1953) 0.13" NA
Jun 5 54° 82° 38° (1990) 93° (1971) 0.13" NA
Jun 6 55° 82° 38° (1998) 95° (1971) 0.13" NA
Jun 7 55° 82° 38° (1977) 94° (1952) 0.13" NA
Jun 8 55° 82° 40° (1983) 96° (1985) 0.13" NA
Jun 9 56° 83° 37° (1969) 95° (1968) 0.13" NA
Jun 10 56° 83° 38° (1969) 95° (1956) 0.13" NA
Jun 11 56° 83° 32° (1972) 95° (1956) 0.13" NA
Jun 12 57° 83° 43° (1974) 95° (1956) 0.13" NA
Jun 13 57° 84° 40° (1978) 95° (2001) 0.14" NA
Jun 14 57° 84° 44° (1959) 99° (1987) 0.13" NA
Jun 15 57° 84° 41° (1997) 97° (1987) 0.13" NA
Jun 16 58° 84° 42° (1961) 96° (1988) 0.13" NA
Jun 17 58° 84° 39° (1980) 96° (1994) 0.13" NA
Jun 18 58° 85° 43° (1999) 97° (1994) 0.13" NA
Jun 19 59° 85° 47° (2005) 99° (1953) 0.13" NA
Jun 20 59° 85° 42° (1980) 102° (1988) 0.13" NA
Jun 21 59° 85° 38° (1992) 101° (1988) 0.13" NA
Jun 22 59° 85° 40° (1963) 98° (1988) 0.13" NA
Jun 23 60° 85° 44° (1972) 96° (1983) 0.13" NA
Jun 24 60° 85° 42° (1979) 96° (1997) 0.13" NA
Jun 25 60° 86° 40° (1986) 103° (1988) 0.13" NA
Jun 26 60° 86° 47° (1967) 97° (1998) 0.13" NA
Jun 27 60° 86° 45° (1974) 97° (1971) 0.13" NA
Jun 28 61° 86° 48° (1992) 98° (1952) 0.13" NA
Jun 29 61° 86° 48° (1989) 98° (1971) 0.13" NA
Jun 30 61° 86° 50° (1988) 97° (1953) 0.13" NA
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