WASHINGTON NATL WSCMO A, VIRGINIA

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 42.5 46.5 55.7 66.3 75.4 83.9 88.3 86.3 79.3 68.0 57.3 47.0 66.4
Highest Mean Max. Temperature (F) 52.3 55.8 61.6 72.8 83.1 90.0 92.8 90.9 85.2 72.6 63.0 53.4 92.8
Year Highest Occurred 1990 1976 2000 1994 1991 1994 1999 1980 1998 1973 1975 1984 1999
Lowest Mean Max. Temperature (F) 30.9 33.1 49.7 60.9 71.8 78.4 82.2 82.4 74.6 61.3 49.9 34.7 30.9
Year Lowest Occurred 1977 1979 1984 1975 1973 1972 2000 2000 1975 1976 1976 1989 1977
Mean Temperature (F) 34.9 38.1 46.5 56.1 65.6 74.5 79.2 77.4 70.5 58.8 48.7 39.5 57.5
Highest Mean Temperature (F) 43.6 45.2 51.7 62.0 73.0 79.4 83.1 81.3 75.4 64.7 54.0 45.3 83.1
Year Highest Occurred 1990 1990 2000 1994 1991 1994 1993 1995 1980 1984 1985 1984 1993
Lowest Mean Temperature (F) 23.0 26.2 41.6 52.0 61.7 69.1 74.7 74.0 66.8 53.5 40.8 27.9 23.0
Year Lowest Occurred 1977 1979 1984 1975 1973 1972 2000 1992 1975 1976 1976 1989 1977
Mean Min. Temperature (F) 27.3 29.7 37.3 45.9 55.8 65.0 70.1 68.6 61.8 49.6 40.0 32.0 48.6
Highest Mean Min. Temperature (F) 36.0 36.6 41.7 51.1 62.8 68.9 73.7 71.8 65.9 57.3 46.8 37.4 73.7
Year Highest Occurred 1998 1998 2000 1994 1991 1989 1993 1995 1980 1984 1985 1982 1993
Lowest Mean Min. Temperature (F) 15.2 19.4 33.4 41.8 51.6 59.8 67.1 65.2 58.9 43.0 31.8 21.0 15.2
Year Lowest Occurred 1977 1979 1984 1972 1973 1972 1976 1972 1988 1987 1976 1989 1977
Mean Precipitation (in.) 3.21 2.63 3.60 2.77 3.82 3.13 3.66 3.44 3.79 3.22 3.03 3.05 39.35
Highest Precipitation (in.) 7.11 5.62 8.45 6.88 7.77 11.53 7.16 7.18 12.36 8.65 6.05 6.03 12.36
Year Highest Occurred 1978 1979 1994 1983 1989 1972 1975 1971 1975 1995 1972 1973 1975
Lowest Precipitation (in.) 0.38 0.42 0.74 0.03 0.75 0.95 1.01 0.59 0.32 0.02 0.29 0.65 0.02
Year Lowest Occurred 1981 1978 1986 1985 1986 1988 1999 1998 1977 2000 1981 1980 2000
Heating Degree Days (F) 917. 742. 563. 272. 73. 5. 0. 7. 19. 205. 477. 775. 4055.
Cooling Degree Days (F) 0. 0. 4. 21. 107. 304. 456. 407. 200. 28. 4. 0. 1531.

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