Rockford, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 11° 27° -27° (1982) 63° (1989) 1.41" 10.3"
February 16° 33° -25° (1933) 70° (2000) 1.34" 7.9"
March 27° 46° -11° (2002) 85° (1986) 2.39" 5.6"
April 37° 59° 5° (1982) 93° (1930) 3.62" 1.4"
May 48° 71° 24° (1966) 106° (1934) 4.03" 0"
June 58° 80° 35° (1945) 106° (1934) 4.8" 0"
July 63° 83° 43° (1967) 112° (1936) 4.1" 0"
August 61° 81° 35° (1915) 104° (1988) 4.21" 0"
September 52° 74° 24° (1942) 103° (1939) 3.47" 0"
October 40° 62° 7° (1925) 91° (1922) 2.57" 0.1"
November 29° 46° -10° (1977) 81° (1933) 2.63" 2.6"
December 17° 32° -24° (1983) 67° (2001) 2.06" 10.8"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 57° 78° 41° (1949) 102° (1953) 0.13" NA
Sep 2 57° 78° 41° (1909) 101° (1953) 0.13" NA
Sep 3 56° 78° 43° (1908) 100° (1913) 0.13" NA
Sep 4 56° 77° 39° (1974) 101° (1925) 0.13" NA
Sep 5 56° 77° 41° (1924) 100° (1925) 0.13" NA
Sep 6 55° 77° 38° (1924) 102° (1922) 0.13" NA
Sep 7 55° 76° 37° (1986) 103° (1939) 0.13" NA
Sep 8 55° 76° 37° (1986) 101° (1922) 0.12" NA
Sep 9 54° 76° 41° (1924) 97° (1955) 0.12" NA
Sep 10 54° 76° 37° (1917) 96° (1931) 0.12" NA
Sep 11 54° 75° 34° (1917) 96° (1931) 0.12" NA
Sep 12 53° 75° 36° (1975) 95° (1927) 0.12" NA
Sep 13 53° 75° 32° (1975) 99° (1939) 0.12" NA
Sep 14 52° 75° 30° (1923) 101° (1939) 0.12" NA
Sep 15 52° 74° 35° (2007) 102° (1939) 0.12" NA
Sep 16 52° 74° 34° (1916) 94° (1931) 0.12" NA
Sep 17 51° 74° 35° (1916) 93° (1988) 0.11" NA
Sep 18 51° 73° 32° (1929) 92° (1920) 0.11" NA
Sep 19 51° 73° 34° (1929) 93° (1948) 0.11" NA
Sep 20 50° 73° 30° (1956) 92° (1920) 0.11" NA
Sep 21 50° 72° 34° (1995) 94° (1920) 0.11" NA
Sep 22 49° 72° 30° (1976) 93° (1937) 0.11" NA
Sep 23 49° 72° 29° (1995) 92° (1937) 0.11" NA
Sep 24 49° 71° 28° (1976) 92° (2007) 0.11" NA
Sep 25 48° 71° 27° (1942) 95° (1920) 0.1" NA
Sep 26 48° 71° 26° (1926) 92° (1920) 0.1" NA
Sep 27 47° 70° 29° (1942) 89° (1954) 0.1" NA
Sep 28 47° 70° 24° (1942) 91° (1952) 0.1" NA
Sep 29 47° 69° 28° (1949) 94° (1953) 0.1" NA
Sep 30 46° 69° 27° (1984) 92° (1971) 0.1" NA
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