RICHMOND WSO AIRPORT, VIRGINIA

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 45.7 49.2 59.5 70.0 77.8 85.1 88.4 87.1 80.9 70.7 61.3 50.2 68.8
Highest Mean Max. Temperature (F) 55.3 62.8 67.0 77.1 83.4 90.0 93.6 92.1 87.5 76.4 67.3 58.8 72.1
Year Highest Occurred 1990 1976 1977 1976 1962 1984 1977 1980 1970 1984 1975 1984 1990
Lowest Mean Max. Temperature (F) 35.2 38.3 52.9 63.5 73.1 80.1 83.7 82.1 76.6 65.9 55.9 39.1 66.4
Year Lowest Occurred 1977 1979 1965 1966 1967 1972 1965 1964 1963 1976 1976 1989 1966
Mean Temperature (F) 35.7 38.7 48.0 57.3 66.0 73.9 78.0 76.8 70.0 58.6 49.6 40.1 57.7
Highest Mean Temperature (F) 45.8 48.5 53.7 62.0 70.6 77.9 81.4 80.7 74.8 66.1 56.6 48.0 60.4
Year Highest Occurred 1974 1976 1977 1985 1962 1981 1977 1980 1970 1984 1985 1971 1990
Lowest Mean Temperature (F) 25.3 28.6 42.3 52.8 60.7 70.1 74.8 73.1 65.5 52.9 42.7 29.3 55.4
Year Lowest Occurred 1977 1979 1969 1966 1967 1972 1962 1964 1963 1987 1976 1989 1966
Mean Min. Temperature (F) 25.7 28.1 36.3 44.6 54.2 62.7 67.5 66.4 59.0 46.5 37.9 29.9 46.6
Highest Mean Min. Temperature (F) 36.6 34.6 42.6 49.2 58.8 67.5 70.3 70.5 63.7 56.9 47.7 37.7 48.8
Year Highest Occurred 1974 1984 1973 1980 1982 1981 1986 1988 1980 1971 1985 1982 1982
Lowest Mean Min. Temperature (F) 15.3 18.9 30.4 39.3 48.2 59.3 63.8 62.9 53.4 39.1 29.4 19.4 44.2
Year Lowest Occurred 1977 1979 1969 1971 1967 1967 1963 1962 1967 1987 1976 1989 1967
Mean Precipitation (in.) 3.24 3.16 3.61 2.96 3.84 3.62 5.03 4.40 3.34 3.53 3.17 3.26 43.16
Highest Precipitation (in.) 7.97 5.97 8.65 7.31 8.87 8.82 13.90 10.58 10.98 9.39 6.99 7.07 61.31
Year Highest Occurred 1978 1979 1984 1987 1972 1972 1969 1985 1975 1971 1985 1973 1975
Lowest Precipitation (in.) 0.64 0.48 0.94 0.64 0.87 0.38 0.51 0.81 0.26 0.30 0.36 0.40 28.29
Year Lowest Occurred 1981 1978 1966 1963 1965 1980 1983 1965 1978 1963 1965 1980 1970
Heating Degree Days (F) 908. 736. 527. 241. 61. 0. 0. 0. 23. 233. 462. 772. 3963.
Cooling Degree Days (F) 0. 0. 0. 10. 92. 270. 403. 366. 173. 34. 0. 0. 1348.

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