ROANOKE 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) 43.8 47.3 57.8 67.3 75.7 82.9 86.4 85.3 78.5 68.1 58.0 47.6 66.6
Highest Mean Max. Temperature (F) 54.1 59.4 63.9 74.9 81.1 86.8 93.0 89.9 85.1 74.2 65.3 57.3 70.3
Year Highest Occurred 1990 1976 1977 1985 1962 1986 1977 1983 1970 1984 1990 1984 1990
Lowest Mean Max. Temperature (F) 32.3 37.1 51.3 60.3 70.0 78.5 82.5 82.5 74.5 60.2 51.0 38.4 65.0
Year Lowest Occurred 1977 1978 1975 1961 1967 1972 1979 1986 1974 1976 1976 1963 1979
Mean Temperature (F) 34.5 37.3 46.8 55.6 64.1 71.5 75.6 74.6 67.7 56.5 47.5 38.3 55.8
Highest Mean Temperature (F) 45.3 46.7 52.5 61.9 69.7 75.0 79.7 77.9 72.6 64.3 55.4 47.1 59.1
Year Highest Occurred 1974 1976 1977 1985 1962 1987 1977 1983 1970 1984 1985 1984 1990
Lowest Mean Temperature (F) 23.6 29.4 40.7 50.0 59.0 67.7 73.2 72.1 63.2 50.3 40.2 29.6 54.5
Year Lowest Occurred 1977 1979 1969 1961 1967 1972 1984 1976 1967 1976 1976 1989 1981
Mean Min. Temperature (F) 25.0 27.2 35.7 43.8 52.5 60.2 64.8 63.8 56.8 44.8 37.0 28.9 45.0
Highest Mean Min. Temperature (F) 36.4 34.0 42.5 48.8 58.2 64.1 67.2 67.7 61.4 54.4 46.0 36.9 47.8
Year Highest Occurred 1974 1976 1973 1985 1962 1989 1986 1978 1978 1984 1985 1984 1990
Lowest Mean Min. Temperature (F) 14.9 20.4 29.4 39.3 47.9 56.8 61.8 59.2 50.3 37.5 29.4 20.4 42.7
Year Lowest Occurred 1977 1979 1969 1982 1967 1972 1963 1976 1967 1987 1976 1989 1976
Mean Precipitation (in.) 2.62 3.04 3.48 3.25 3.98 3.19 3.91 4.15 3.50 3.85 3.19 2.97 41.13
Highest Precipitation (in.) 6.12 5.37 7.80 11.35 7.50 7.76 10.09 9.54 11.09 9.89 12.36 5.61 54.34
Year Highest Occurred 1978 1979 1975 1987 1971 1989 1989 1984 1987 1990 1985 1983 1989
Lowest Precipitation (in.) 0.29 0.56 0.43 0.48 1.51 0.62 0.45 1.08 0.44 0.27 0.68 0.18 25.67
Year Lowest Occurred 1981 1968 1966 1976 1970 1986 1977 1987 1968 1963 1981 1965 1963
Heating Degree Days (F) 946. 776. 564. 289. 105. 5. 0. 0. 39. 283. 525. 828. 4360.
Cooling Degree Days (F) 0. 0. 0. 7. 78. 200. 329. 298. 120. 20. 0. 0. 1052.

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