Connecticut December Temperature by Year

This page is a list of the average statewide temperature in the month of December in Connecticut for each year from 1895–2023. It is a statewide average over the entire territory of the state, based on data from the NOAA.
State:
Month:
What Was the Hottest December in Connecticut History?
2015 was the warmest December in Connecticut history. Statewide, the average daily high temperature was 51.5 °F, and the average low was 35.5 °F.
What Was the Coldest December in Connecticut History?
1989 was the coolest December in Connecticut history. Statewide, the average daily high temperature was 27.1 °F, and the average low was 8.7 °F.
  • Click column headers to sort
Year Rank High (°F) Low (°F)
2023 2 46.6 31.0
2022 23 42.5 24.7
2021 5 44.6 29.5
2020 23 42.0 25.2
2019 46 39.7 23.8
2018 18 41.9 25.8
2017 82 36.1 21.3
2016 32 41.3 24.0
2015 1 51.5 35.5
2014 15 42.1 28.6
2013 57 39.4 22.7
2012 9 43.3 28.5
2011 6 46.3 27.6
2010 87 35.8 20.5
2009 69 38.1 22.1
2008 39 41.2 23.3
2007 67 37.6 22.7
2006 3 46.8 29.1
2005 82 37.1 20.3
2004 59 40.0 21.6
2003 34 41.0 23.8
2002 71 37.8 21.8
2001 4 45.8 28.4
2000 104 34.8 17.4
1999 18 42.6 24.9
1998 7 46.3 26.8
1997 41 40.2 23.9
1996 9 42.7 29.1
1995 104 33.7 18.4
1994 17 44.1 26.2
1993 65 38.8 21.9
1992 59 38.5 23.1
1991 27 41.8 24.3
1990 8 45.4 27.3
1989 129 27.1 8.7
1988 80 38.6 19.5
1987 32 40.6 24.7
1986 35 40.1 24.6
1985 95 35.3 19.4
1984 12 44.6 26.8
1983 85 37.0 20.1
1982 13 44.2 27.0
1981 77 36.5 21.9
1980 112 35.8 14.8
1979 26 41.8 25.2
1978 58 40.0 21.8
1977 87 35.9 20.4
1976 119 33.6 14.0
1975 76 37.8 21.0
1974 39 39.9 24.4
1973 18 43.0 24.6
1972 44 38.2 25.3
1971 27 41.7 24.5
1970 99 34.8 19.0
1969 98 34.5 19.5
1968 101 35.0 18.1
1967 52 39.9 22.7
1966 74 38.4 20.9
1965 44 40.3 23.4
1964 71 37.6 22.0
1963 124 30.9 14.5
1962 114 34.8 15.3
1961 77 36.6 21.7
1960 117 34.6 13.5
1959 46 39.7 23.6
1958 125 31.9 13.2
1957 16 43.3 27.1
1956 18 42.0 25.5
1955 121 31.6 15.1
1954 62 38.6 22.8
1953 14 44.4 26.5
1952 35 40.2 24.4
1951 54 40.4 22.0
1950 71 38.1 21.4
1949 49 40.8 22.4
1948 52 40.2 22.4
1947 102 35.4 17.7
1946 62 40.4 21.0
1945 119 32.0 15.6
1944 103 35.2 17.3
1943 110 35.5 15.3
1942 115 32.8 16.8
1941 35 40.7 23.9
1940 51 39.3 23.5
1939 70 38.4 21.6
1938 67 37.5 22.8
1937 86 35.8 20.8
1936 31 41.2 24.1
1935 115 31.7 18.0
1934 94 35.6 19.3
1933 108 34.7 16.6
1932 41 41.1 23.0
1931 22 42.8 24.5
1930 77 36.7 21.7
1929 90 35.6 20.6
1928 30 41.3 24.5
1927 62 39.1 22.2
1926 121 32.3 14.4
1925 75 36.8 22.2
1924 96 36.2 18.2
1923 11 43.9 27.6
1922 100 35.1 18.4
1921 96 36.2 18.2
1920 50 38.8 24.1
1919 118 33.2 14.5
1918 59 39.4 22.3
1917 128 28.0 10.1
1916 87 35.4 21.1
1915 93 35.0 19.9
1914 106 34.1 17.9
1913 35 41.2 23.5
1912 27 41.5 24.6
1911 23 41.7 25.4
1910 126 31.1 13.4
1909 109 33.0 17.9
1908 81 38.1 20.0
1907 41 40.2 23.7
1906 110 34.2 16.6
1905 55 40.7 21.6
1904 127 30.4 12.2
1903 121 32.8 13.9
1902 113 34.6 15.6
1901 91 37.1 19.0
1900 82 38.0 19.4
1899 55 40.1 22.0
1898 92 36.1 19.5
1897 66 38.0 22.6
1896 106 34.9 17.0
1895 46 40.8 22.6