BACK BAY WILDLIFE REFUG, VIRGINIA

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 50.3 52.6 58.9 67.7 74.6 83.1 87.3 85.8 80.9 71.6 63.1 54.5 69.2
Highest Mean Max. Temperature (F) 60.0 63.4 65.2 73.1 81.5 89.2 91.7 89.4 85.2 76.0 68.8 60.2 91.7
Year Highest Occurred 1974 1990 2000 1981 1991 1989 1993 1977 1977 1990 1985 1990 1993
Lowest Mean Max. Temperature (F) 41.8 41.6 52.3 61.0 69.1 77.4 82.4 82.4 78.2 67.5 56.3 42.6 41.6
Year Lowest Occurred 1977 1978 1984 1982 1972 1972 2000 1976 1982 1974 1996 1989 1978
Mean Temperature (F) 41.1 42.9 48.9 57.4 65.4 74.2 78.8 77.5 73.0 62.8 53.6 45.5 60.1
Highest Mean Temperature (F) 49.8 52.1 53.4 62.2 71.0 79.3 82.5 79.7 75.4 67.3 61.8 51.3 82.5
Year Highest Occurred 1974 1990 1976 1994 1991 1989 1993 1987 1980 1990 1985 1971 1993
Lowest Mean Temperature (F) 30.8 32.3 43.6 51.8 61.3 69.1 74.7 73.7 69.8 57.9 44.3 34.9 30.8
Year Lowest Occurred 1977 1978 1978 1975 1978 1972 1978 1976 1982 1987 1976 1989 1977
Mean Min. Temperature (F) 31.9 33.2 38.9 47.0 56.1 65.3 70.2 69.2 65.0 54.0 44.1 36.5 51.0
Highest Mean Min. Temperature (F) 39.6 40.7 42.8 51.4 60.5 69.3 73.6 71.7 67.5 61.4 54.8 42.9 73.6
Year Highest Occurred 1974 1990 1991 1998 1991 1989 1999 1999 1989 1971 1985 1998 1999
Lowest Mean Min. Temperature (F) 19.8 23.1 32.9 42.5 52.3 60.8 65.6 65.0 61.2 47.9 31.8 27.1 19.8
Year Lowest Occurred 1977 1978 1978 1975 1978 1972 1978 1976 1976 1987 1976 1989 1977
Mean Precipitation (in.) 4.25 3.42 4.00 2.81 3.95 3.51 4.51 5.39 4.49 3.56 3.02 3.06 45.97
Highest Precipitation (in.) 11.70 8.89 8.41 6.07 9.31 8.00 11.97 12.81 11.54 9.32 6.22 5.81 12.81
Year Highest Occurred 1987 1998 1989 2000 1978 2000 1996 1992 1999 1971 1977 1973 1992
Lowest Precipitation (in.) 1.37 1.25 0.94 0.63 0.51 0.48 0.60 0.74 0.38 0.00 1.01 0.57 0.00
Year Lowest Occurred 1981 1986 1986 1994 1986 1984 1987 1993 1986 2000 1973 1988 2000
Heating Degree Days (F) 741. 618. 500. 243. 70. 3. 0. 0. 3. 134. 353. 606. 3271.
Cooling Degree Days (F) 0. 0. 0. 12. 81. 280. 426. 387. 242. 67. 11. 0. 1506.

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