NRCC Northeast Regional Climate Center  

May State Temperature Averages

State May 2006 Coolest Warmest
Temperature Departure Rank Average Year Average Year
Connecticut 57.5 -0.3 62 49.8 1917 63.1 1991
Delaware 62.9 0.1 64 56.2 1917 69.2 2004
Maine 52.8 1.5 82 44.3 1967 57.6 1911
Maryland 61.7 -0.7 52 56.5 1967+ 69.0 2004
Massachusetts 55.7 -0.5 53 48.8 1917 61.4 1944
New Hampshire 53.5 -0.6 59 45.0 1917 59.7 1911
New Jersey 61.3 0.8 73 53.5 1917 66.1 1991
New York 55.8 0.5 64 46.9 1917 61.6 1911
Pennsylvania 57.0 -0.7 40 51.0 1967 64.8 1944
Rhode Island 57.2 0.7 78 48.1 1917 60.8 1991
Vermont 54.4 0.4 71 44.8 1917 59.9 1975
West Virginia 57.5 -2.4 19 54.3 1997 67.3 1896
Northeast 56.3 -0.1 51 49.5 1917 62.1 1911

Rankings are for 112 years between 1895 and 2006. 1=coolest; 112=warmest.

May State Precipitation Averages

State May 2006 Driest Wettest
Precipitation Departure Pct Normal Rank Amount Year Amount Year
Connecticut 7.29 2.96 168% 109 0.60 1903 10.42 1984
Delaware 1.80 -2.38 43% 16 0.34 1964 10.80 1948
Maine 6.19 2.55 170% 107 0.77 1903 7.16 1984
Maryland 2.37 -1.90 55% 24 0.80 1964 7.62 1989
Massachusetts 9.28 5.37 237% 112 0.75 1903 9.28 2006
New Hampshire 9.30 5.54 247% 111 0.69 1903 9.58 1984
New Jersey 3.18 -1.10 74% 50 0.53 1903 8.29 1984
New York 3.54 -0.14 96% 66 0.64 1903 7.03 1984
Pennsylvania 3.31 -0.76 81% 53 1.43 1903 7.63 1989
Rhode Island 7.20 3.48 193% 109 0.68 1939 9.00 1948
Vermont 7.14 3.30 185% 110 0.41 1903 8.47 1984
West Virginia 2.83 -1.74 61% 24 1.46 1911 9.26 1996
Northeast 4.49 0.53 113% 84 1.23 1903 6.91 1984

Rankings are for 112 years between 1895 and 2006. 1=driest; 112=wettest.

+ indicates extreme also occurred in one or more previous years.
Departures are calculated using the 1971-2000 normals.