NORFOLK WSO AIRPORT, VIRGINIA

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 47.8 50.3 57.8 67.0 74.9 82.8 86.8 84.7 79.4 69.4 60.9 52.3 67.8
Highest Mean Max. Temperature (F) 57.3 60.6 62.8 74.3 80.8 86.6 90.5 89.5 83.6 74.1 67.9 60.2 90.5
Year Highest Occurred 1990 1976 2000 1994 1991 1994 1987 1980 1980 1990 1985 1984 1987
Lowest Mean Max. Temperature (F) 34.9 38.1 53.2 60.0 69.0 78.0 82.9 81.1 76.9 64.7 53.8 41.5 34.9
Year Lowest Occurred 1977 1978 1996 1975 1992 1972 1984 1996 1988 1972 1996 1989 1977
Mean Temperature (F) 40.1 42.0 49.0 57.4 66.3 74.5 79.1 77.4 72.1 61.1 52.3 44.2 59.6
Highest Mean Temperature (F) 47.9 49.3 53.6 63.5 71.6 78.5 82.3 80.6 75.6 66.1 59.5 51.6 82.3
Year Highest Occurred 1974 1990 1977 1994 1991 1994 1993 1980 1980 1984 1985 1971 1993
Lowest Mean Temperature (F) 28.5 32.2 44.6 51.8 61.2 70.0 76.0 74.6 69.5 55.8 45.0 34.0 28.5
Year Lowest Occurred 1977 1978 1984 1975 1992 1972 1978 1992 1982 1987 1976 1989 1977
Mean Min. Temperature (F) 32.3 33.6 40.1 47.8 57.6 66.2 71.4 70.1 64.8 52.8 43.7 36.1 51.4
Highest Mean Min. Temperature (F) 40.8 40.5 44.8 52.7 62.4 70.3 74.4 72.5 68.0 60.8 51.2 43.5 74.4
Year Highest Occurred 1974 1998 1977 1994 1991 1994 1993 1988 1977 1971 1985 1971 1993
Lowest Mean Min. Temperature (F) 22.0 25.1 35.2 43.6 53.3 61.7 68.3 67.6 61.3 45.9 35.9 26.5 22.0
Year Lowest Occurred 1977 1979 1981 1975 1992 1979 1978 1982 1976 1987 1976 1989 1977
Mean Precipitation (in.) 3.93 3.34 4.08 3.38 3.74 3.77 5.17 4.79 4.06 3.47 2.98 3.03 45.74
Highest Precipitation (in.) 9.93 8.21 10.36 7.25 10.12 8.31 14.37 14.32 13.80 10.12 5.71 6.10 14.37
Year Highest Occurred 1987 1998 1994 1984 1979 2000 1994 1992 1979 1971 1985 1983 1994
Lowest Precipitation (in.) 1.05 0.84 0.75 0.43 0.64 1.10 0.36 0.74 0.26 0.01 0.97 0.67 0.01
Year Lowest Occurred 1981 1991 1986 1985 1991 1997 1993 1975 1986 2000 1993 1988 2000
Heating Degree Days (F) 759. 638. 488. 247. 66. 4. 0. 0. 8. 152. 375. 631. 3368.
Cooling Degree Days (F) 1. 2. 8. 35. 119. 303. 453. 400. 235. 45. 10. 1. 1612.

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