Sterling/Rock Falls, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January -12° -3° -32.8° (1999) 18.3° (2004) 1.6" 9"
February -9° -32.8° (1905) 21.7° (2000) 1.43" 6.8"
March -3° -25° (2002) 30.6° (1986) 2.55" 5"
April 14° -13.3° (1982) 33.9° (1986) 3.61" 1.3"
May 21° -4.4° (2005) 40.6° (1934) 4.32" 0"
June 14° 26° 1.1° (1945) 41.1° (1934) 4.88" 0"
July 17° 28° 6.1° (1904) 43.3° (1936) 3.45" 0"
August 16° 27° 2.8° (1934) 39.4° (1988) 4.47" 0"
September 11° 23° -5.6° (1942) 38.9° (1939) 3.31" 0"
October 17° -13.9° (1925) 33.9° (1963) 2.71" 0.2"
November -2° -22.2° (1977) 27.2° (1933) 2.82" 1.5"
December -8° -1° -31.7° (1983) 20° (1998) 2.13" 9"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Jun 1 12.2° 23.9° 3° (1993) 41° (1934) 0.16" NA
Jun 2 12.2° 24.4° 4° (1906) 38° (1934) 0.16" NA
Jun 3 12.8° 24.4° 2° (1946) 37° (1934) 0.17" NA
Jun 4 12.8° 24.4° 3° (1924) 37° (1934) 0.17" NA
Jun 5 12.8° 24.4° 1° (1945) 35° (1911) 0.17" NA
Jun 6 13.3° 25° 6° (2000) 36° (1933) 0.17" NA
Jun 7 13.3° 25° 3° (1935) 36° (1963) 0.17" NA
Jun 8 13.3° 25° 4° (1913) 37° (1934) 0.17" NA
Jun 9 13.9° 25.6° 3° (1901) 35° (1968) 0.17" NA
Jun 10 13.9° 25.6° 3° (1972) 37° (1911) 0.17" NA
Jun 11 13.9° 25.6° 2° (1972) 37° (1911) 0.17" NA
Jun 12 13.9° 25.6° 4° (1903) 34° (1901) 0.17" NA
Jun 13 14.4° 26.1° 5° (1933) 36° (1976) 0.17" NA
Jun 14 14.4° 26.1° 3° (1939) 34° (1943) 0.17" NA
Jun 15 14.4° 26.1° 4° (1927) 34° (1934) 0.17" NA
Jun 16 14.4° 26.1° 6° (1908) 36° (1939) 0.17" NA
Jun 17 15° 26.1° 6° (1980) 37° (1913) 0.17" NA
Jun 18 15° 26.7° 8° (1920) 34° (1913) 0.17" NA
Jun 19 15° 26.7° 7° (1945) 37° (1994) 0.17" NA
Jun 20 15° 26.7° 6° (1914) 37° (1933) 0.16" NA
Jun 21 15° 26.7° 4° (1992) 36° (1933) 0.16" NA
Jun 22 15.6° 26.7° 6° (1963) 37° (1988) 0.16" NA
Jun 23 15.6° 26.7° 5° (1936) 37° (1911) 0.16" NA
Jun 24 15.6° 27.2° 6° (1936) 37° (1901) 0.16" NA
Jun 25 15.6° 27.2° 8° (1979) 38° (1937) 0.15" NA
Jun 26 15.6° 27.2° 8° (1926) 38° (1931) 0.15" NA
Jun 27 16.1° 27.2° 7° (1905) 38° (1931) 0.15" NA
Jun 28 16.1° 27.2° 6° (1925) 39° (1931) 0.14" NA
Jun 29 16.1° 27.2° 7° (1923) 39° (1931) 0.14" NA
Jun 30 16.1° 27.2° 5° (1943) 39° (1931) 0.14" NA
Advertisements