NRCC Northeast Regional Climate Center  

December State Temperature Averages

State December 2000 Coolest Warmest
Temperature Departure Rank Average Year Average Year
Connecticut 26.0 -3.9 20 17.5 1989 36.8 1990
Delaware 31.5 -5.9 13 26.0 1989 44.8 1984
Maine 17.7 -1.7 33 5.3 1989 29.4 1900
Maryland 28.7 -7.2 6 24.5 1989 43.6 1984
Massachusetts 26.1 -2.9 25 16.4 1989 37.2 1923
New Hampshire 19.8 -3.1 27 8.5 1989 30.9 1998
New Jersey 29.3 -5.1 15 23.1 1989 41.0 1923
New York 20.0 -5.5 11 11.5 1989 33.7 1923
Pennsylvania 22.9 -7.0 5 17.8 1989 38.4 1923
Rhode Island 29.3 -3.7 21 21.9 1989 42.4 1928
Vermont 16.8 -4.9 20 5.0 1989 29.8 1996+
West Virginia 25.8 -7.9 5 21.7 1989 42.6 1956
Northeast 22.2 -5.3 11 14.4 1989 35.5 1923

Rankings are for 106 years between 1895 and 2000. 1=coolest; 106=warmest.

December State Precipitation Averages

State December 2000 Driest Wettest
Precipitation Departure Pct Normal Rank Amount Year Amount Year
Connecticut 4.52 0.46 111% 74 0.79 1955 9.37 1973
Delaware 3.02 -0.56 84% 49 0.64 1988 8.15 1996
Maine 4.19 0.42 111% 76 0.94 1943 8.76 1973
Maryland 2.80 -0.62 81% 46 0.48 1955 6.95 1969
Massachusetts 4.51 0.41 109% 79 0.92 1943 8.52 1973
New Hampshire 4.13 0.48 113% 79 0.94 1943 8.72 1973
New Jersey 3.52 -0.15 95% 59 0.39 1955 7.96 1996
New York 3.48 0.17 105% 77 1.13 1943 6.04 1973
Pennsylvania 2.94 -0.19 93% 59 0.58 1955 6.23 1990
Rhode Island 5.01 0.60 113% 78 0.71 1955 10.20 1936
Vermont 4.93 1.65 150% 96 0.99 1943 7.51 1973
West Virginia 2.37 -1.03 69% 25 0.69 1965 7.08 1978
Northeast 3.47 0.02 100% 67 1.02 1955 6.41 1973

Rankings are for 106 years between 1895 and 2000. 1=driest; 106=wettest.

+ indicates extreme also occurred in one or more previous years.
Departures are calculated using the 1961-1990 normals.