BACK BAY WILDLIFE REFUG, VIRGINIA

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 49.0 50.7 58.4 66.4 74.0 82.1 85.9 85.1 80.2 71.3 62.9 53.5 68.3
Highest Mean Max. Temperature (F) 60.0 63.4 65.0 73.1 78.5 89.2 90.8 90.8 85.2 75.3 68.8 60.1 72.6
Year Highest Occurred 1974 1990 1963 1981 1977 1989 1987 1961 1977 1990 1985 1990 1990
Lowest Mean Max. Temperature (F) 41.8 41.6 51.9 61.0 69.1 76.1 82.4 81.1 75.4 67.0 56.9 43.3 66.1
Year Lowest Occurred 1977 1978 1969 1982 1972 1967 1964 1967 1963 1964 1976 1989 1969
Mean Temperature (F) 40.5 42.0 49.2 57.0 65.4 73.9 78.1 77.5 73.0 63.4 54.1 45.2 59.9
Highest Mean Temperature (F) 50.9 52.1 54.4 61.1 68.4 79.3 81.0 79.8 77.5 67.9 61.8 52.3 63.1
Year Highest Occurred 1974 1990 1976 1981 1962 1989 1986 1975 1961 1971 1985 1971 1990
Lowest Mean Temperature (F) 31.9 33.4 44.0 52.7 60.7 69.7 75.4 74.3 69.0 57.9 45.3 35.6 58.4
Year Lowest Occurred 1977 1978 1969 1975 1967 1967 1978 1976 1967 1987 1976 1989 1978
Mean Min. Temperature (F) 32.0 33.2 40.0 47.6 56.7 65.7 70.2 69.8 65.7 55.5 45.3 36.8 51.5
Highest Mean Min. Temperature (F) 41.7 40.7 44.4 50.5 59.2 70.1 73.5 72.5 69.9 63.0 54.8 44.8 53.5
Year Highest Occurred 1974 1990 1976 1977 1980 1971 1986 1968 1961 1971 1985 1971 1990
Lowest Mean Min. Temperature (F) 21.9 25.1 34.7 43.8 50.5 62.2 66.8 66.2 62.3 47.9 33.6 27.9 49.4
Year Lowest Occurred 1977 1978 1978 1965 1967 1972 1978 1976 1967 1987 1976 1989 1978
Mean Precipitation (in.) 4.06 3.57 3.76 2.81 3.97 3.66 4.78 5.58 4.46 3.22 3.03 3.17 46.07
Highest Precipitation (in.) 11.70 6.25 8.41 5.83 9.31 8.77 9.31 12.66 17.03 9.32 6.22 5.81 67.40
Year Highest Occurred 1987 1982 1989 1983 1978 1963 1967 1967 1964 1971 1977 1973 1989
Lowest Precipitation (in.) 1.37 1.25 0.94 0.78 0.51 0.48 0.60 1.86 0.38 0.42 0.41 0.57 26.82
Year Lowest Occurred 1981 1986 1986 1985 1986 1984 1987 1985 1986 1967 1965 1988 1986
Heating Degree Days (F) 760. 644. 490. 247. 54. 0. 0. 0. 0. 115. 334. 614. 3258.
Cooling Degree Days (F) 0. 0. 0. 7. 66. 271. 406. 388. 243. 65. 7. 0. 1453.

Southeast Regional Climate Center, sercc@climate.ncsu.edu