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
Jan 1 -11.7° -2.8° -25° (1977) 12.2° (2007) 0.06" NA
Jan 2 -11.7° -2.8° -28° (1979) 11° (1950) 0.06" NA
Jan 3 -11.7° -3.3° -28° (1979) 18° (2004) 0.06" NA
Jan 4 -12.2° -3.3° -31° (1919) 15° (1998) 0.06" NA
Jan 5 -12.2° -3.3° -33° (1999) 15° (1997) 0.06" NA
Jan 6 -12.2° -3.3° -33° (1999) 12° (1933) 0.05" NA
Jan 7 -12.2° -3.3° -29° (1912) 11° (1949) 0.05" NA
Jan 8 -12.2° -3.3° -29° (1942) 14° (1965) 0.05" NA
Jan 9 -12.8° -3.3° -26° (1979) 15° (1939) 0.05" NA
Jan 10 -12.8° -3.3° -30° (1982) 14° (1975) 0.05" NA
Jan 11 -12.8° -3.3° -31° (1982) 11° (1980) 0.05" NA
Jan 12 -12.8° -3.9° -28° (1974) 14° (1960) 0.05" NA
Jan 13 -12.8° -3.9° -28° (1912) 12° (1960) 0.05" NA
Jan 14 -12.8° -3.9° -29° (1917) 14° (1928) 0.05" NA
Jan 15 -12.8° -3.9° -30° (1994) 13° (1949) 0.05" NA
Jan 16 -12.8° -3.9° -30° (1977) 12° (1933) 0.05" NA
Jan 17 -12.8° -3.9° -28° (1982) 13° (1990) 0.05" NA
Jan 18 -12.8° -3.3° -31° (1930) 13° (1996) 0.05" NA
Jan 19 -12.8° -3.3° -31° (1994) 13° (1996) 0.05" NA
Jan 20 -12.8° -3.3° -32° (1985) 16° (1906) 0.05" NA
Jan 21 -12.8° -3.3° -33° (1985) 16° (1906) 0.05" NA
Jan 22 -12.8° -3.3° -32° (1930) 14° (1964) 0.05" NA
Jan 23 -12.8° -3.3° -31° (1936) 14° (1909) 0.05" NA
Jan 24 -12.8° -3.3° -28° (1936) 17° (1909) 0.05" NA
Jan 25 -12.8° -3.3° -28° (1936) 16° (1950) 0.05" NA
Jan 26 -12.8° -3.3° -30° (1982) 16° (1944) 0.05" NA
Jan 27 -12.2° -3.3° -32° (1982) 17° (1944) 0.05" NA
Jan 28 -12.2° -2.8° -30° (1963) 16° (2002) 0.05" NA
Jan 29 -12.2° -2.8° -29° (1915) 12° (2002) 0.05" NA
Jan 30 -12.2° -2.8° -29° (1918) 12° (1929) 0.05" NA
Jan 31 -12.2° -2.8° -27° (1965) 12° (1988) 0.05" NA
Advertisements
Track Severe Weather on mobile