Sterling/Rock Falls, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 10° 26° -27° (1999) 65° (2004) 1.6" 9"
February 15° 32° -27° (1905) 71° (2000) 1.43" 6.8"
March 27° 44° -13° (2002) 87° (1986) 2.55" 5"
April 37° 58° 8° (1982) 93° (1986) 3.61" 1.3"
May 48° 70° 24° (2005) 105° (1934) 4.32" 0"
June 58° 79° 34° (1945) 106° (1934) 4.88" 0"
July 62° 82° 43° (1904) 110° (1936) 3.45" 0"
August 60° 80° 37° (1934) 103° (1988) 4.47" 0"
September 51° 73° 22° (1942) 102° (1939) 3.31" 0"
October 39° 62° 7° (1925) 93° (1963) 2.71" 0.2"
November 28° 45° -8° (1977) 81° (1933) 2.82" 1.5"
December 17° 31° -25° (1983) 68° (1998) 2.13" 9"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Oct 1 45° 68° 29° (1939) 90° (1971) 0.09" NA
Oct 2 45° 68° 25° (2003) 90° (1971) 0.09" NA
Oct 3 44° 68° 25° (2003) 88° (1922) 0.09" NA
Oct 4 44° 67° 24° (1935) 91° (1997) 0.09" NA
Oct 5 44° 67° 25° (1980) 89° (1922) 0.09" NA
Oct 6 43° 66° 20° (1952) 93° (1963) 0.09" NA
Oct 7 43° 66° 27° (2000) 88° (1939) 0.09" NA
Oct 8 42° 66° 24° (1952) 87° (1949) 0.09" NA
Oct 9 42° 65° 25° (1915) 85° (1916) 0.09" NA
Oct 10 42° 65° 23° (1925) 89° (1938) 0.09" NA
Oct 11 41° 64° 24° (1906) 88° (1920) 0.09" NA
Oct 12 41° 64° 25° (1987) 84° (1920) 0.08" NA
Oct 13 40° 63° 23° (1909) 88° (1975) 0.08" NA
Oct 14 40° 63° 19° (1937) 86° (1947) 0.08" NA
Oct 15 40° 63° 18° (1937) 88° (1947) 0.08" NA
Oct 16 39° 62° 25° (1944) 87° (1938) 0.08" NA
Oct 17 39° 62° 26° (1939) 87° (1910) 0.08" NA
Oct 18 39° 61° 19° (1948) 87° (1924) 0.08" NA
Oct 19 38° 61° 20° (1972) 85° (1953) 0.08" NA
Oct 20 38° 60° 20° (1992) 85° (1953) 0.09" NA
Oct 21 37° 60° 21° (1952) 87° (1947) 0.09" NA
Oct 22 37° 59° 22° (1925) 85° (1947) 0.09" NA
Oct 23 37° 59° 22° (1913) 88° (1902) 0.09" NA
Oct 24 36° 58° 18° (1981) 82° (1902) 0.09" NA
Oct 25 36° 58° 22° (1981) 78° (1927) 0.09" NA
Oct 26 36° 57° 17° (1962) 83° (1939) 0.09" NA
Oct 27 35° 56° 18° (1942) 84° (1927) 0.09" NA
Oct 28 35° 56° 7° (1925) 80° (1927) 0.09" NA
Oct 29 35° 55° 8° (1925) 83° (1937) 0.09" NA
Oct 30 34° 55° 9° (1925) 82° (1950) 0.09" NA
Oct 31 34° 54° 13° (1925) 83° (1950) 0.09" NA
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