DOVER, DELAWARE

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 42.6 46.0 55.5 65.4 75.4 83.7 87.7 86.2 80.2 69.6 58.9 47.6 66.6
Highest Mean Max. Temperature (F) 51.3 56.7 62.3 71.3 82.2 87.7 92.8 89.0 85.4 74.5 63.8 56.3 69.2
Year Highest Occurred 1990 1990 1977 1985 1965 1987 1988 1988 1970 1963 1975 1984 1990
Lowest Mean Max. Temperature (F) 33.6 34.5 48.5 59.3 70.4 78.6 84.6 83.2 75.8 63.6 53.1 36.3 64.9
Year Lowest Occurred 1977 1979 1984 1966 1990 1979 1969 1967 1963 1976 1976 1989 1972
Mean Temperature (F) 33.8 36.4 45.0 54.1 64.2 72.8 77.2 75.9 69.6 58.6 49.0 38.8 56.3
Highest Mean Temperature (F) 42.5 45.0 51.0 58.5 68.8 76.7 81.4 78.8 74.1 64.2 55.4 46.1 58.9
Year Highest Occurred 1990 1990 1977 1985 1965 1987 1987 1988 1961 1971 1985 1984 1990
Lowest Mean Temperature (F) 25.0 26.1 39.6 49.3 58.4 68.0 74.7 73.3 65.3 52.9 42.7 27.6 54.8
Year Lowest Occurred 1977 1979 1984 1975 1967 1979 1962 1971 1963 1988 1976 1989 1967
Mean Min. Temperature (F) 25.0 26.7 34.5 42.7 52.9 61.9 66.8 65.6 58.9 47.6 39.1 29.9 46.0
Highest Mean Min. Temperature (F) 33.7 33.3 39.6 46.4 56.5 66.7 70.4 69.1 64.1 55.9 47.1 36.7 48.7
Year Highest Occurred 1990 1990 1977 1981 1985 1973 1987 1978 1961 1971 1985 1982 1990
Lowest Mean Min. Temperature (F) 16.4 17.4 30.6 39.0 46.2 57.3 63.3 62.1 54.8 40.8 32.3 18.9 43.7
Year Lowest Occurred 1977 1978 1984 1975 1967 1979 1971 1963 1963 1988 1976 1989 1963
Mean Precipitation (in.) 3.38 2.93 3.80 3.50 3.99 3.85 4.15 4.25 4.34 3.26 3.15 3.54 44.14
Highest Precipitation (in.) 7.67 6.27 6.94 8.13 7.81 9.13 14.24 15.46 11.85 8.09 6.42 8.34 62.82
Year Highest Occurred 1979 1971 1984 1983 1990 1989 1975 1967 1969 1976 1972 1969 1989
Lowest Precipitation (in.) 0.35 0.66 1.59 0.48 0.58 0.68 1.07 1.17 0.91 0.00 0.56 0.80 21.38
Year Lowest Occurred 1981 1978 1981 1963 1964 1964 1974 1972 1970 1963 1981 1980 1965
Heating Degree Days (F) 967. 801. 620. 327. 92. 0. 0. 0. 16. 222. 480. 812. 4337.
Cooling Degree Days (F) 0. 0. 0. 0. 67. 238. 378. 338. 154. 24. 0. 0. 1199.

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