NRCC Northeast Regional Climate Center  

May State Temperature Averages

State May 2008 Coolest Warmest
Temperature Departure Rank Average Year Average Year
Connecticut 55.8 -2.0 40 49.8 1917 63.1 1991
Delaware 60.6 -2.2 23 56.2 1917 69.2 2004
Maine 50.4 -0.9 45 44.3 1967 57.6 1911
Maryland 59.6 -2.8 17 56.5 1967+ 69.0 2004
Massachusetts 54.6 -1.6 36 48.8 1917 61.4 1944
New Hampshire 52.3 -1.8 40 45.0 1917 59.7 1911
New Jersey 58.2 -2.3 26 53.5 1917 66.1 1991
New York 52.0 -3.3 17 46.9 1917 61.6 1911
Pennsylvania 54.0 -3.7 8 51.0 1967 64.8 1944
Rhode Island 55.5 -1.0 55 48.1 1917 60.8 1991
Vermont 51.0 -3.0 26 44.8 1917 59.9 1975
West Virginia 57.0 -2.9 14 54.3 1997 67.3 1896
Northeast 53.7 -2.7 17 49.5 1917 62.1 1911

Rankings are for 114 years between 1895 and 2008. 1=coolest; 114=warmest.

May State Precipitation Averages

State May 2008 Driest Wettest
Precipitation Departure Pct Normal Rank Amount Year Amount Year
Connecticut 2.63 -1.70 60% 33 0.60 1903 10.42 1984
Delaware 5.18 1.00 123% 98 0.34 1964 10.80 1948
Maine 2.23 -1.41 61% 24 0.77 1903 7.16 1984
Maryland 6.78 2.51 158% 110 0.80 1964 7.62 1989
Massachusetts 2.18 -1.73 55% 25 0.75 1903 9.31 2006
New Hampshire 1.54 -2.22 40% 9 0.69 1903 9.58 1984
New Jersey 4.69 0.41 109% 88 0.53 1903 8.29 1984
New York 2.37 -1.31 64% 25 0.64 1903 7.03 1984
Pennsylvania 4.51 0.44 110% 81 1.43 1903 7.63 1989
Rhode Island 2.67 -1.05 71% 39 0.68 1939 9.00 1948
Vermont 1.83 -2.01 47% 13 0.41 1903 8.47 1984
West Virginia 5.67 1.10 123% 95 1.46 1911 9.26 1996
Northeast 3.50 -0.46 88% 56 1.23 1903 6.91 1984

Rankings are for 114 years between 1895 and 2008. 1=driest; 114=wettest.

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