ALPHARETTA 5 SSW, GEORGIA

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 49.9 55.2 63.3 71.3 77.9 84.3 87.5 86.3 81.1 71.8 62.4 53.4 70.4
Highest Mean Max. Temperature (F) 60.2 65.3 70.1 76.4 83.1 88.5 93.8 91.1 86.7 77.0 68.6 62.3 93.8
Year Highest Occurred 1990 1990 1997 1981 2000 1990 1986 1990 1998 1998 1999 1984 1986
Lowest Mean Max. Temperature (F) 37.9 45.9 56.5 65.3 73.3 78.0 81.4 81.7 76.9 67.3 55.3 44.7 37.9
Year Lowest Occurred 1977 1978 1971 1983 1976 1997 1994 1994 1979 1976 1976 2000 1977
Mean Temperature (F) 39.5 43.6 50.8 58.3 66.2 73.2 77.2 76.2 70.6 59.5 50.5 42.5 59.0
Highest Mean Temperature (F) 49.9 53.4 57.1 63.7 70.4 76.6 81.4 80.0 74.8 64.9 58.7 49.6 81.4
Year Highest Occurred 1974 1990 1997 1981 1998 1981 1986 1990 1998 1984 1985 1984 1986
Lowest Mean Temperature (F) 27.2 34.6 43.6 52.9 61.7 68.5 74.0 73.3 67.7 54.0 42.8 35.2 27.2
Year Lowest Occurred 1977 1978 1971 1983 1973 1974 1988 1992 1982 1987 1976 2000 1977
Mean Min. Temperature (F) 29.1 31.9 38.3 45.3 54.4 62.0 66.8 66.1 60.0 47.2 38.6 31.6 47.6
Highest Mean Min. Temperature (F) 41.1 41.4 44.6 51.2 61.2 66.7 70.0 69.5 64.1 53.7 48.9 39.3 70.0
Year Highest Occurred 1974 1990 1990 1991 1991 1994 1989 1995 1988 1985 1985 1994 1989
Lowest Mean Min. Temperature (F) 16.5 23.2 30.7 40.0 48.2 55.8 63.0 63.6 55.4 38.1 30.2 24.9 16.5
Year Lowest Occurred 1977 1978 1971 1971 1973 1974 1976 1976 1981 1987 1976 1976 1977
Mean Precipitation (in.) 5.34 4.78 5.52 4.04 4.63 3.66 4.17 4.32 3.87 3.58 3.73 4.18 51.82
Highest Precipitation (in.) 11.02 8.81 13.86 11.02 9.03 7.92 8.80 7.79 9.03 8.33 7.18 11.27 13.86
Year Highest Occurred 1972 1982 1980 1979 1976 1994 1982 1985 1989 1977 1983 1983 1980
Lowest Precipitation (in.) 0.81 0.93 1.10 0.35 1.51 0.51 0.91 1.44 0.02 0.09 1.69 0.76 0.02
Year Lowest Occurred 1981 1978 1985 1992 1992 1990 1980 1997 1984 2000 1980 1980 1984
Heating Degree Days (F) 790. 600. 446. 218. 73. 7. 0. 0. 17. 201. 440. 698. 3490.
Cooling Degree Days (F) 0. 0. 6. 17. 109. 251. 377. 348. 183. 30. 6. 0. 1327.

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