DAYTON, TENNESSEE

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 45.9 51.6 60.8 70.3 77.3 84.7 87.7 86.9 81.0 70.4 58.8 49.0 68.7
Highest Mean Max. Temperature (F) 54.7 60.9 66.3 75.5 83.1 89.1 95.4 95.7 87.3 76.1 66.2 57.1 95.7
Year Highest Occurred 1974 1976 1974 1981 1982 1988 1980 1980 1980 1984 1999 1984 1980
Lowest Mean Max. Temperature (F) 34.4 42.9 53.3 64.4 72.8 78.7 81.6 79.6 76.1 62.6 51.4 40.5 34.4
Year Lowest Occurred 1977 1978 1993 1983 1989 1997 1994 1992 1996 1988 1997 1989 1977
Mean Temperature (F) 36.2 40.5 48.8 57.4 65.4 73.3 76.9 76.0 70.1 58.3 48.1 39.3 57.5
Highest Mean Temperature (F) 46.0 46.6 53.7 62.3 70.1 76.6 81.8 81.3 74.8 65.3 56.1 46.8 81.8
Year Highest Occurred 1974 1976 2000 1981 1987 1986 1980 1980 1980 1984 1985 1971 1980
Lowest Mean Temperature (F) 24.1 32.4 42.9 52.4 60.7 69.4 74.1 71.4 66.9 51.6 41.1 31.0 24.1
Year Lowest Occurred 1977 1978 1996 1983 1997 1974 1984 1992 1996 1988 1976 1989 1977
Mean Min. Temperature (F) 26.5 29.3 36.7 44.4 53.5 61.8 66.1 65.0 59.1 46.1 37.3 29.6 46.3
Highest Mean Min. Temperature (F) 37.3 35.5 42.7 50.3 60.2 64.9 69.4 69.4 62.4 54.5 47.6 37.5 69.4
Year Highest Occurred 1974 1990 1973 1999 1991 1981 1999 1995 1986 1984 1985 1971 1999
Lowest Mean Min. Temperature (F) 13.7 21.9 31.3 40.2 48.4 57.1 62.8 61.1 54.5 38.7 28.4 21.4 13.7
Year Lowest Occurred 1977 1978 1971 1971 1997 1974 1984 1976 1976 1987 1976 1989 1977
Mean Precipitation (in.) 5.51 4.77 6.32 4.60 5.35 4.10 4.58 4.10 4.62 3.47 5.19 5.62 58.23
Highest Precipitation (in.) 9.96 9.81 13.56 9.13 10.41 11.24 9.78 10.14 13.37 8.53 9.60 14.04 14.04
Year Highest Occurred 1999 1994 1973 1977 1984 1989 1994 1982 1977 1975 1996 1990 1990
Lowest Precipitation (in.) 1.10 0.97 2.08 0.69 1.81 0.46 1.07 0.29 0.76 0.09 2.02 1.29 0.09
Year Lowest Occurred 1986 1978 1988 1976 1982 1988 1980 1999 1978 2000 1971 1980 2000
Heating Degree Days (F) 893. 688. 505. 239. 85. 4. 0. 0. 24. 238. 510. 797. 3983.
Cooling Degree Days (F) 0. 0. 1. 10. 96. 250. 370. 339. 175. 29. 1. 0. 1271.

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