ROANOKE 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) 45.0 49.1 57.9 68.0 75.9 83.3 87.5 86.0 78.8 68.6 58.0 48.6 67.2
Highest Mean Max. Temperature (F) 54.6 59.9 64.4 74.9 81.5 87.3 94.3 91.0 86.0 74.8 65.3 57.8 94.3
Year Highest Occurred 1974 1976 1977 1985 1977 1984 1977 1983 1998 1984 1990 1984 1977
Lowest Mean Max. Temperature (F) 32.8 37.6 50.3 62.2 70.1 77.8 81.8 81.8 74.7 60.8 49.9 38.7 32.8
Year Lowest Occurred 1977 1978 1993 1983 1992 1992 2000 1992 2000 1976 1996 1989 1977
Mean Temperature (F) 35.8 39.1 47.2 56.1 64.1 71.9 76.2 74.7 67.7 56.6 47.3 39.1 56.3
Highest Mean Temperature (F) 45.4 47.0 52.8 61.7 69.8 75.1 80.1 78.6 73.6 64.0 54.9 47.1 80.1
Year Highest Occurred 1974 1976 1977 1985 1991 1994 1993 1995 1998 1984 1985 1984 1993
Lowest Mean Temperature (F) 23.8 29.7 41.7 50.9 60.3 67.6 73.1 71.9 63.8 49.9 40.0 29.9 23.8
Year Lowest Occurred 1977 1979 1996 1982 1997 1972 1984 1976 1984 1976 1976 1989 1977
Mean Min. Temperature (F) 26.6 29.0 36.5 44.2 52.3 60.4 64.9 63.4 56.6 44.6 36.6 29.6 45.4
Highest Mean Min. Temperature (F) 36.2 34.6 42.6 48.4 59.4 64.2 68.9 68.1 61.2 53.1 45.1 36.3 68.9
Year Highest Occurred 1974 1998 1973 1985 1991 1994 1999 1995 1998 1984 1985 1984 1999
Lowest Mean Min. Temperature (F) 14.7 20.5 30.9 38.9 48.2 55.6 60.6 57.6 51.4 37.7 28.5 21.1 14.7
Year Lowest Occurred 1977 1979 1996 1982 1983 1972 1976 1976 1976 1987 1976 1989 1977
Mean Precipitation (in.) 3.23 3.08 3.84 3.61 4.24 3.68 4.00 3.74 3.85 3.15 3.21 2.86 42.49
Highest Precipitation (in.) 7.97 8.00 7.91 11.35 7.50 10.32 10.09 9.54 11.09 9.89 12.36 5.61 12.36
Year Highest Occurred 1998 1998 1993 1987 1971 1995 1989 1984 1987 1990 1985 1983 1985
Lowest Precipitation (in.) 0.29 0.65 0.88 0.48 1.04 0.62 0.45 0.74 0.15 0.02 0.68 0.60 0.02
Year Lowest Occurred 1981 1978 1988 1976 1997 1986 1977 1995 1991 2000 1981 1980 2000
Heating Degree Days (F) 911. 741. 569. 290. 107. 13. 1. 2. 48. 276. 528. 798. 4284.
Cooling Degree Days (F) 0. 0. 4. 20. 74. 217. 355. 309. 136. 17. 2. 0. 1134.

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