NRCC Northeast Regional Climate Center  

December State Temperature Averages

State December 2007 Coolest Warmest
Temperature Departure Rank Average Year Average Year
Connecticut 30.2 -0.9 55 17.5 1989 37.6 2001
Delaware 39.7 1.3 83 26.0 1989 44.8 1984
Maine 18.1 -2.3 37 5.3 1989 29.4 1900
Maryland 36.8 0.0 70 24.5 1989 43.6 1984
Massachusetts 28.6 -1.6 42 16.4 1989 37.4 2006
New Hampshire 21.9 -2.2 47 8.5 1989 32.0 2006
New Jersey 35.8 0.4 67 23.1 1989 42.3 2006
New York 26.2 -0.3 56 11.5 1989 34.8 2006
Pennsylvania 31.7 1.0 70 17.8 1989 38.4 1923
Rhode Island 33.1 -1.1 55 21.9 1989 42.4 1928
Vermont 22.1 -0.6 55 5.0 1989 31.1 2006
West Virginia 37.6 3.2 96 21.7 1989 42.6 1956
Northeast 28.4 0.0 59 14.4 1989 35.6 2006

Rankings are for 113 years between 1895 and 2007. 1=coolest; 113=warmest.

December State Precipitation Averages

State December 2007 Driest Wettest
Precipitation Departure Pct Normal Rank Amount Year Amount Year
Connecticut 4.94 0.86 120% 85 0.79 1955 9.37 1973
Delaware 4.68 1.13 131% 93 0.64 1988 8.15 1996
Maine 4.26 0.75 121% 81 0.94 1943 8.76 1973
Maryland 4.40 0.99 128% 91 0.48 1955 6.95 1969
Massachusetts 5.13 1.08 126% 91 0.92 1943 8.52 1973
New Hampshire 4.66 1.22 135% 95 0.94 1943 8.72 1973
New Jersey 5.69 1.98 153% 99 0.39 1955 7.96 1996
New York 4.66 1.42 143% 104 1.13 1943 6.04 1973
Pennsylvania 5.00 1.84 158% 108 0.58 1955 6.23 1990
Rhode Island 5.61 1.25 128% 92 0.71 1955 10.20 1936
Vermont 4.52 1.33 141% 98 0.99 1943 7.51 1973
West Virginia 5.62 2.19 163% 107 0.69 1965 7.08 1978
Northeast 4.84 1.46 143% 103 1.02 1955 6.41 1973

Rankings are for 113 years between 1895 and 2007. 1=driest; 113=wettest.

Departures are calculated using the 1971-2000 normals.