COVINGTON FILTER PLANT, VIRGINIA

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 42.6 47.9 57.3 68.1 77.1 83.8 87.7 86.1 79.3 70.0 57.8 47.5 67.1
Highest Mean Max. Temperature (F) 52.1 56.6 63.4 75.4 82.6 88.5 92.1 92.0 87.1 76.0 66.0 56.7 92.1
Year Highest Occurred 1974 1990 2000 1994 1982 1986 1988 1987 1998 1984 1999 1971 1988
Lowest Mean Max. Temperature (F) 29.3 36.5 50.7 63.1 72.3 78.2 82.6 82.2 75.6 62.7 49.8 36.6 29.3
Year Lowest Occurred 1977 1978 1993 1973 1992 1974 2000 1992 2000 1976 1996 1989 1977
Mean Temperature (F) 32.0 35.4 43.6 53.0 62.5 70.1 74.3 72.6 65.9 55.1 44.5 36.1 53.8
Highest Mean Temperature (F) 42.7 42.4 49.1 57.5 68.1 73.1 77.6 76.8 69.6 62.1 52.2 44.2 77.6
Year Highest Occurred 1974 1990 1973 1981 1991 1981 1987 1987 1978 1984 1985 1971 1987
Lowest Mean Temperature (F) 19.4 25.6 38.8 49.4 57.0 66.0 71.5 69.6 62.2 50.0 36.2 25.7 19.4
Year Lowest Occurred 1977 1978 1996 1997 1997 1972 2000 1976 1984 1976 1976 1989 1977
Mean Min. Temperature (F) 21.4 22.9 29.9 37.8 47.9 56.4 60.8 59.0 52.5 40.2 31.2 24.6 40.4
Highest Mean Min. Temperature (F) 33.4 29.7 37.8 41.1 55.2 60.6 64.8 62.9 58.6 50.7 40.7 31.8 64.8
Year Highest Occurred 1974 1997 1973 1999 1991 1989 1989 1978 1971 1971 1985 1972 1989
Lowest Mean Min. Temperature (F) 9.6 14.6 25.0 31.8 41.3 52.1 58.2 53.9 47.7 32.6 22.5 14.7 9.6
Year Lowest Occurred 1977 1978 1996 1971 1997 1980 1998 1976 1984 1974 1976 1989 1977
Mean Precipitation (in.) 2.56 2.42 3.34 3.03 4.10 3.26 3.66 3.34 3.02 2.85 3.13 2.52 37.23
Highest Precipitation (in.) 6.54 5.19 7.04 7.92 7.34 8.10 7.41 9.69 7.41 7.77 15.29 5.98 15.29
Year Highest Occurred 1996 1984 1993 1987 1981 1972 1988 1984 1989 1976 1985 1973 1985
Lowest Precipitation (in.) 0.36 0.45 0.75 0.60 1.05 0.78 0.92 0.95 0.05 0.02 0.88 0.46 0.02
Year Lowest Occurred 1981 1978 1972 1976 1977 1999 1996 1987 1985 2000 1981 1985 2000
Heating Degree Days (F) 1022. 829. 663. 362. 136. 17. 0. 3. 58. 318. 615. 897. 4920.
Cooling Degree Days (F) 0. 0. 0. 1. 57. 169. 287. 237. 84. 11. 0. 0. 846.

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