NRCC Northeast Regional Climate Center  

December State Temperature Averages

State December 2004 Coolest Warmest
Temperature Departure Rank Average Year Average Year
Connecticut 30.3 -0.8 56 17.5 1989 37.6 2001
Delaware 38.9 0.5 69 26.0 1989 44.8 1984
Maine 19.1 -1.3 43 5.3 1989 29.4 1900
Maryland 37.3 0.5 75 24.5 1989 43.6 1984
Massachusetts 30.2 -0.0 60 16.4 1989 37.2 1923
New Hampshire 23.6 -0.5 58 8.5 1989 31.3 2001
New Jersey 36.0 0.6 68 23.1 1989 41.7 2001
New York 26.3 -0.2 56 11.5 1989 33.8 2001
Pennsylvania 30.9 0.2 59 17.8 1989 38.4 1923
Rhode Island 33.4 -0.8 54 21.9 1989 42.4 1928
Vermont 21.8 -0.9 50 5.0 1989 30.4 2001
West Virginia 34.7 0.3 61 21.7 1989 42.6 1956
Northeast 28.2 -0.2 56 14.4 1989 35.5 1923

Rankings are for 110 years between 1895 and 2004. 1=coolest; 110=warmest.

December State Precipitation Averages

State December 2004 Driest Wettest
Precipitation Departure Pct Normal Rank Amount Year Amount Year
Connecticut 4.72 0.64 115% 79 0.79 1955 9.37 1973
Delaware 2.84 -0.71 79% 45 0.64 1988 8.15 1996
Maine 4.13 0.62 117% 76 0.94 1943 8.76 1973
Maryland 3.06 -0.35 89% 52 0.48 1955 6.95 1969
Massachusetts 4.77 0.72 117% 83 0.92 1943 8.52 1973
New Hampshire 4.07 0.63 118% 82 0.94 1943 8.72 1973
New Jersey 3.32 -0.39 89% 56 0.39 1955 7.96 1996
New York 4.11 0.87 126% 95 1.13 1943 6.04 1973
Pennsylvania 3.59 0.43 113% 84 0.58 1955 6.23 1990
Rhode Island 5.18 0.82 118% 82 0.71 1955 10.20 1936
Vermont 4.47 1.28 140% 95 0.99 1943 7.51 1973
West Virginia 3.23 -0.20 94% 61 0.69 1965 7.08 1978
Northeast 3.86 0.47 114% 85 1.02 1955 6.41 1973

Rankings are for 110 years between 1895 and 2004. 1=driest; 110=wettest.

Departures are calculated using the 1971-2000 normals.