Naperville, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 15° 30° -26° (1985) 65° (1989) 1.91" 9.6"
February 18° 35° -21° (1977) 74° (2000) 1.93" 8"
March 27° 47° -10° (1962) 85° (1986) 2.46" 3.7"
April 37° 60° 4° (1982) 90° (2002) 3.55" 0.6"
May 46° 71° 25° (1966) 95° (1967) 4.07" 0"
June 56° 80° 32° (1972) 103° (1988) 4.18" 0"
July 61° 83° 41° (1967) 105° (1995) 4.13" 0"
August 60° 81° 38° (1963) 100° (1991) 4.34" 0"
September 51° 75° 27° (1974) 100° (1953) 3.43" 0"
October 40° 63° 14° (1988) 90° (1971) 3.14" 0"
November 30° 48° -4° (1950) 78° (1978) 3.34" 0.7"
December 19° 34° -21° (1983) 70° (2001) 2.38" 5.4"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Jun 1 51° 76° 34° (2003) 93° (1988) 0.14" 0"
Jun 2 51° 76° 36° (2003) 93° (2002) 0.14" 0"
Jun 3 52° 76° 37° (1977) 94° (1972) 0.14" 0"
Jun 4 52° 77° 36° (1969) 93° (1953) 0.13" 0"
Jun 5 52° 77° 38° (1990) 93° (1971) 0.14" 0"
Jun 6 53° 77° 38° (1998) 95° (1971) 0.13" 0"
Jun 7 53° 78° 38° (1977) 94° (1952) 0.14" 0"
Jun 8 53° 78° 40° (1983) 96° (1985) 0.13" 0"
Jun 9 54° 78° 37° (1969) 95° (1968) 0.13" 0"
Jun 10 54° 79° 38° (1969) 95° (1956) 0.14" 0"
Jun 11 55° 79° 32° (1972) 95° (1956) 0.14" 0"
Jun 12 55° 79° 43° (1974) 95° (1956) 0.14" 0"
Jun 13 55° 80° 40° (1978) 95° (2001) 0.13" 0"
Jun 14 56° 80° 44° (1959) 99° (1987) 0.15" 0"
Jun 15 56° 80° 41° (1997) 97° (1987) 0.14" 0"
Jun 16 56° 81° 42° (1961) 96° (1988) 0.14" 0"
Jun 17 57° 81° 39° (1980) 96° (1994) 0.14" 0"
Jun 18 57° 81° 43° (1999) 97° (1994) 0.14" 0"
Jun 19 57° 81° 47° (2005) 99° (1953) 0.14" 0"
Jun 20 58° 82° 42° (1980) 102° (1988) 0.15" 0"
Jun 21 58° 82° 38° (1992) 101° (1988) 0.14" 0"
Jun 22 58° 82° 40° (1963) 98° (1988) 0.15" 0"
Jun 23 59° 82° 44° (1972) 96° (1983) 0.15" 0"
Jun 24 59° 83° 42° (1979) 96° (1997) 0.14" 0"
Jun 25 59° 83° 40° (1986) 103° (1988) 0.14" 0"
Jun 26 59° 83° 47° (1967) 97° (1998) 0.15" 0"
Jun 27 60° 83° 45° (1974) 97° (1971) 0.14" 0"
Jun 28 60° 83° 48° (1992) 98° (1952) 0.14" 0"
Jun 29 60° 83° 48° (1989) 98° (1971) 0.13" 0"
Jun 30 60° 83° 50° (1988) 97° (1953) 0.13" 0"
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