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
May 1 42° 66° 27° (1978) 88° (1992) 0.13" NA
May 2 43° 66° 28° (1966) 88° (1959) 0.13" NA
May 3 43° 66° 26° (2005) 91° (1938) 0.12" NA
May 4 44° 67° 27° (1935) 92° (1952) 0.12" NA
May 5 44° 67° 29° (1944) 93° (1949) 0.12" NA
May 6 44° 68° 29° (1989) 95° (1934) 0.12" NA
May 7 45° 68° 28° (1989) 91° (1896) 0.12" NA
May 8 45° 68° 30° (1947) 92° (1896) 0.12" NA
May 9 45° 69° 27° (1966) 96° (1934) 0.12" NA
May 10 46° 69° 24° (1966) 91° (1922) 0.12" NA
May 11 46° 70° 28° (1907) 90° (1922) 0.12" NA
May 12 47° 70° 29° (1981) 88° (1896) 0.12" NA
May 13 47° 70° 32° (1938) 88° (1991) 0.13" NA
May 14 47° 71° 33° (1943) 92° (2007) 0.13" NA
May 15 48° 71° 31° (1926) 90° (1944) 0.13" NA
May 16 48° 71° 29° (1997) 90° (1992) 0.13" NA
May 17 48° 72° 32° (1930) 91° (1934) 0.13" NA
May 18 49° 72° 31° (2002) 94° (1934) 0.13" NA
May 19 49° 72° 31° (1929) 96° (1934) 0.13" NA
May 20 49° 73° 31° (1924) 94° (1934) 0.13" NA
May 21 50° 73° 29° (2002) 93° (1934) 0.13" NA
May 22 50° 73° 33° (1967) 94° (1925) 0.13" NA
May 23 50° 74° 30° (1917) 95° (1921) 0.13" NA
May 24 51° 74° 33° (1925) 93° (1921) 0.14" NA
May 25 51° 74° 29° (1925) 92° (1939) 0.14" NA
May 26 51° 75° 32° (1925) 92° (1911) 0.14" NA
May 27 52° 75° 30° (1992) 92° (1978) 0.14" NA
May 28 52° 75° 36° (1992) 93° (2006) 0.14" NA
May 29 53° 76° 33° (1965) 97° (1934) 0.14" NA
May 30 53° 76° 34° (1984) 96° (1934) 0.15" NA
May 31 53° 76° 36° (1897) 106° (1934) 0.15" NA
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