CLARKSVILLE SEWAGE PLT, TENNESSEE

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 45.4 51.1 61.2 71.0 78.7 86.4 90.4 89.1 82.9 72.2 60.1 49.4 69.8
Highest Mean Max. Temperature (F) 54.7 60.2 67.1 77.2 84.9 91.7 95.1 94.9 90.8 78.9 66.8 59.0 95.1
Year Highest Occurred 1990 1976 1976 1981 1987 1988 1993 1980 1998 1971 1999 1971 1993
Lowest Mean Max. Temperature (F) 31.4 37.3 54.1 60.0 73.4 81.2 86.5 84.5 76.8 65.5 52.8 36.0 31.4
Year Lowest Occurred 1977 1978 1978 1983 1983 1997 1979 1992 1975 1988 1976 2000 1977
Mean Temperature (F) 35.2 39.9 48.8 57.7 66.3 74.7 79.0 77.3 70.6 58.7 48.2 39.2 58.0
Highest Mean Temperature (F) 44.1 47.8 55.0 63.3 71.9 77.8 83.6 82.4 77.0 65.5 55.0 47.8 83.6
Year Highest Occurred 1998 1990 1973 1981 1991 1998 1993 1995 1998 1971 1985 1971 1993
Lowest Mean Temperature (F) 20.8 26.2 43.1 49.5 61.3 69.7 75.7 72.7 65.6 52.0 39.3 27.7 20.8
Year Lowest Occurred 1977 1978 1971 1983 1971 1974 1976 1982 1974 1976 1976 1989 1977
Mean Min. Temperature (F) 25.0 28.6 36.4 44.4 53.8 62.9 67.5 65.4 58.2 45.2 36.2 28.9 46.0
Highest Mean Min. Temperature (F) 36.2 36.7 43.4 51.3 62.5 68.1 72.8 71.3 63.2 52.9 45.5 36.6 72.8
Year Highest Occurred 1998 1998 1973 1991 1991 1998 1999 1995 1998 1984 1985 1982 1999
Lowest Mean Min. Temperature (F) 10.2 15.1 30.1 38.9 46.7 57.1 63.5 60.0 52.7 37.4 25.8 16.9 10.2
Year Lowest Occurred 1977 1978 1971 1983 1971 1972 1975 1976 1976 1987 1976 1989 1977
Mean Precipitation (in.) 4.10 4.20 5.41 4.26 5.01 4.43 4.28 3.33 3.76 3.25 4.60 5.15 51.78
Highest Precipitation (in.) 9.74 10.80 17.28 9.77 12.59 11.12 9.78 9.42 12.55 6.66 9.65 12.54 17.28
Year Highest Occurred 1999 1989 1975 1983 1983 1998 1981 1974 1979 1985 1973 1990 1975
Lowest Precipitation (in.) 0.89 1.72 1.96 0.81 0.86 0.46 1.49 0.68 0.76 0.37 1.37 1.06 0.37
Year Lowest Occurred 1971 1980 1987 1986 1977 1988 1997 1987 1998 1987 1976 1976 1987
Heating Degree Days (F) 924. 705. 504. 242. 93. 4. 0. 2. 33. 242. 507. 802. 4058.
Cooling Degree Days (F) 0. 0. 1. 24. 132. 295. 432. 381. 199. 47. 1. 0. 1512.

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