National Weather Service United States Department of Commerce

Snow Across the Great Lakes, Central Appalachians, and Northeast; Unsettled Weather in the West

Light to moderate snow will continue into Saturday over the Great Lakes, Central Appalachians, and Northeast. This weekend into next week, a series of atmospheric rivers will bring gusty winds, periods of heavy rain, and mountain snow to northern California and the Pacific Northwest. Colder temperatures are in store for the weekend from the Great Lakes to East Coast. Read More >

Rockford Temperature Rankings for each month
Jan Feb Mar Apr May Jun July Aug Sept Oct Nov Dec Annual

 

ROCKFORD
MONTHLY TEMPERATURE MEANS
DECEMBER 

NORMAL 27.3 degrees

***Coldest to Warmest Official Rockford Temperature Data from 1906 - 2021***

 

12.5 2000   23.7 1990   29.0 1947
12.7 1983   23.8 2016   29.1 1952
13.1 1963   24.1 1973   29.2 1984
14.0 1919   24.1 1996   29.4 1908
14.2 1989   24.2 1927   29.4 1987
14.6 1985   24.2 1969   29.5 1940
14.9 1976   24.6 2017   29.6 1928
16.5 1917   24.7 1966   29.7 1949
17.1 1909   25.0 2007   29.9 1936
18.0 1950   25.3 1968   30.0 2003
18.1 1924   25.3 1980   30.2 1911
18.7 1958   25.4 1932   30.3 1912
19.4 1914   25.5 1915   30.3 1920
19.4 2013   25.7 1922   30.3 1994
19.5 2008   25.8 1992   30.5 2014
19.8 1977   26.3 1988   30.8 2018
20.0 2005   26.3 2004   31.0 1957
20.1 1925   26.6 1970   31.3 2006
20.3 1945   26.7 1930   31.4 1971
20.4 2010   26.7 1974   31.4 2020
21.4 1916   26.8 1906   31.5 1907
21.4 1944   26.8 1929   31.8 2001
21.6 1910   26.8 1999   31.9 1998
21.6 1942   26.9 1975   32.3 1965
21.6 1955   27.0 1938   32.5 1959
21.6 1972   27.1 1954   32.6 2011
21.9 1951   27.3 1921   32.6 2019
21.9 1960   27.3 1943   33.0 1918
21.9 1978   27.4 1993   33.0 1982
22.0 1962   27.6 1953   33.2 1939
22.3 1935   27.7 1967   33.4 2012
22.8 1926   27.7 1997   33.7 1913
22.8 1961   27.9 1933   34.0 1941
22.8 1964   28.1 1986   34.3 1931
22.9 1934   28.2 1991   34.9 2021
22.9 1981   28.3 1948   35.5 1923
23.3 1995   28.5 1956   37.7 2015
23.6 1937   28.7 2002   No Data 1946
23.6 2009   28.9 1979