POTOMAC FILTER PLANT, MARYLAND

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F)
Highest Mean Max. Temperature (F)
Year Highest Occurred
Lowest Mean Max. Temperature (F)
Year Lowest Occurred
Mean Temperature (F)
Highest Mean Temperature (F)
Year Highest Occurred
Lowest Mean Temperature (F)
Year Lowest Occurred
Mean Min. Temperature (F)
Highest Mean Min. Temperature (F)
Year Highest Occurred
Lowest Mean Min. Temperature (F)
Year Lowest Occurred
Mean Precipitation (in.) 2.53 2.52 2.94 2.99 3.75 3.68 3.55 3.61 3.65 3.03 3.29 3.03 38.57
Highest Precipitation (in.) 7.08 5.52 5.50 7.69 8.94 12.81 7.06 10.33 11.11 7.80 7.00 6.29 61.18
Year Highest Occurred 1978 1979 1984 1983 1988 1972 1975 1979 1966 1976 1963 1973 1979
Lowest Precipitation (in.) 0.35 0.21 0.68 0.32 0.85 1.03 0.71 0.14 0.34 0.00 0.24 0.37 28.69
Year Lowest Occurred 1981 1968 1969 1985 1963 1988 1963 1962 1967 1963 1981 1965 1965
Heating Degree Days (F)
Cooling Degree Days (F)

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