Rochester, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 17° 33° -22° (1884) 73° (1909) 1.62" 7.4"
February 22° 39° -24° (1905) 78° (1930) 1.8" 5.8"
March 32° 51° -12° (1960) 91° (1907) 3.15" 3.4"
April 42° 63° 17° (1920) 90° (1986) 3.36" 0.7"
May 53° 74° 28° (1966) 101° (1934) 4.06" 0"
June 62° 83° 39° (2003) 104° (1934) 3.77" 0"
July 66° 87° 48° (1975) 112° (1954) 3.53" 0"
August 64° 85° 43° (1986) 108° (1934) 3.41" 0"
September 55° 79° 31° (1899) 101° (1984) 2.83" 0"
October 44° 67° 13° (1925) 93° (2006) 2.62" 0"
November 34° 51° -3° (1964) 83° (1950) 2.87" 1.6"
December 23° 38° -21° (1989) 74° (1984) 2.54" 6"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Oct 1 50° 73° 32° (2003) 91° (1897) 0.09" NA
Oct 2 49° 73° 23° (2003) 93° (1953) 0.09" NA
Oct 3 49° 73° 30° (2004) 93° (2006) 0.09" NA
Oct 4 49° 72° 32° (1968) 90° (1897) 0.09" NA
Oct 5 48° 72° 28° (2004) 89° (2007) 0.08" NA
Oct 6 48° 71° 24° (1952) 90° (1963) 0.08" NA
Oct 7 48° 71° 25° (1952) 91° (2007) 0.08" NA
Oct 8 47° 71° 25° (1952) 90° (1939) 0.08" NA
Oct 9 47° 70° 25° (2000) 88° (1938) 0.08" NA
Oct 10 46° 70° 26° (1964) 89° (1963) 0.08" NA
Oct 11 46° 69° 28° (1987) 90° (1962) 0.08" NA
Oct 12 46° 69° 24° (1987) 89° (1962) 0.08" NA
Oct 13 45° 68° 26° (1909) 88° (1975) 0.08" NA
Oct 14 45° 68° 27° (1979) 88° (1897) 0.08" NA
Oct 15 45° 67° 27° (2006) 89° (1963) 0.08" NA
Oct 16 44° 67° 30° (1976) 85° (1963) 0.08" NA
Oct 17 44° 66° 26° (1948) 86° (1964) 0.08" NA
Oct 18 44° 66° 24° (1948) 86° (1953) 0.08" NA
Oct 19 43° 65° 19° (1992) 85° (1953) 0.08" NA
Oct 20 43° 65° 24° (1964) 87° (2003) 0.08" NA
Oct 21 43° 64° 25° (1930) 89° (1979) 0.08" NA
Oct 22 42° 64° 23° (1997) 85° (1963) 0.09" NA
Oct 23 42° 63° 24° (1981) 85° (1963) 0.09" NA
Oct 24 42° 63° 23° (1999) 83° (1963) 0.09" NA
Oct 25 41° 62° 20° (1887) 86° (1940) 0.09" NA
Oct 26 41° 62° 22° (1962) 85° (1963) 0.09" NA
Oct 27 41° 61° 26° (1925) 84° (1927) 0.09" NA
Oct 28 40° 61° 20° (1925) 84° (1927) 0.09" NA
Oct 29 40° 60° 17° (1952) 83° (2004) 0.09" NA
Oct 30 39° 60° 13° (1925) 89° (1950) 0.09" NA
Oct 31 39° 59° 22° (1925) 86° (1950) 0.09" NA
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