Rochester, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 19° 35° -22° (1884) 73° (1909) 1.82" 6.4"
February 23° 40° -24° (1905) 78° (1930) 1.89" 5.5"
March 32° 52° -12° (1960) 91° (1907) 2.63" 2.5"
April 42° 65° 17° (1920) 90° (1986) 3.51" 0.3"
May 53° 75° 28° (1966) 101° (1934) 4.24" 0"
June 62° 83° 39° (2003) 104° (1934) 4.46" 0"
July 65° 86° 48° (1975) 112° (1954) 3.94" 0"
August 64° 85° 43° (1986) 108° (1934) 3.24" 0"
September 55° 79° 31° (1899) 101° (1984) 2.9" 0"
October 44° 66° 13° (1925) 93° (2006) 3.15" 0"
November 34° 52° -3° (1964) 83° (1950) 3.21" 0.6"
December 23° 38° -21° (1989) 74° (1984) 2.52" 5.6"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Apr 1 38° 59° 19° (1899) 87° (1946) 0.1" 0"
Apr 2 38° 59° 21° (1961) 87° (1981) 0.11" 0.1"
Apr 3 38° 60° 20° (1936) 83° (1981) 0.1" 0"
Apr 4 38° 60° 22° (1975) 86° (1929) 0.1" 0"
Apr 5 39° 61° 17° (1920) 86° (1988) 0.1" 0"
Apr 6 39° 61° 19° (1982) 85° (2010) 0.1" 0"
Apr 7 40° 61° 20° (1990) 85° (2001) 0.11" 0.1"
Apr 8 40° 62° 22° (1997) 86° (2001) 0.11" 0"
Apr 9 40° 62° 19° (1997) 87° (2001) 0.11" 0"
Apr 10 41° 63° 24° (1989) 90° (1930) 0.11" 0"
Apr 11 41° 63° 24° (1973) 90° (1930) 0.11" 0"
Apr 12 41° 63° 23° (1990) 88° (1930) 0.11" 0"
Apr 13 42° 64° 23° (1957) 89° (1941) 0.12" 0"
Apr 14 42° 64° 23° (1997) 89° (2006) 0.11" 0"
Apr 15 42° 65° 25° (1928) 86° (2002) 0.12" 0.1"
Apr 16 43° 65° 26° (1962) 88° (2002) 0.12" 0"
Apr 17 43° 65° 26° (1997) 89° (1937) 0.12" 0"
Apr 18 43° 66° 27° (1983) 87° (2004) 0.12" 0"
Apr 19 44° 66° 24° (1983) 87° (1938) 0.12" 0"
Apr 20 44° 66° 28° (1956) 89° (1936) 0.13" 0"
Apr 21 44° 67° 28° (1904) 87° (1902) 0.12" 0"
Apr 22 45° 67° 30° (1986) 89° (1925) 0.12" 0"
Apr 23 45° 68° 23° (1956) 89° (1925) 0.13" 0"
Apr 24 45° 68° 22° (1910) 89° (1925) 0.13" 0"
Apr 25 46° 68° 32° (1972) 90° (1986) 0.13" 0"
Apr 26 46° 69° 32° (1976) 89° (1986) 0.13" 0"
Apr 27 46° 69° 33° (1968) 87° (1984) 0.13" 0"
Apr 28 47° 69° 31° (1992) 87° (1951) 0.13" 0"
Apr 29 47° 70° 32° (1958) 89° (1910) 0.13" 0"
Apr 30 47° 70° 34° (1971) 88° (2007) 0.13" 0"
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