LA PLATA 1 W, MARYLAND

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 44.0 48.5 57.8 68.4 74.6 81.2 84.8 83.4 77.9 68.0 58.6 48.2 66.3
Highest Mean Max. Temperature (F) 53.6 59.2 63.8 74.9 80.0 86.1 89.6 87.4 84.3 72.8 64.5 56.0 89.6
Year Highest Occurred 1990 1976 2000 1994 1991 1994 1999 1983 1998 1984 1999 1984 1999
Lowest Mean Max. Temperature (F) 33.2 34.8 51.4 61.9 71.0 77.3 80.5 78.5 72.8 62.3 51.7 36.5 33.2
Year Lowest Occurred 1977 1979 1984 1975 1992 1972 1979 1992 1975 1976 1996 1989 1977
Mean Temperature (F) 35.0 38.5 46.6 55.8 63.9 71.6 75.8 74.4 68.3 57.6 48.4 39.2 56.3
Highest Mean Temperature (F) 43.5 46.3 51.8 61.0 69.7 75.7 79.6 77.4 73.3 63.5 55.6 46.1 79.6
Year Highest Occurred 1990 1976 1977 1994 1991 1994 1999 1988 1998 1984 1985 1984 1999
Lowest Mean Temperature (F) 23.5 26.4 41.4 51.0 60.2 68.1 72.5 70.6 64.8 52.4 41.1 27.3 23.5
Year Lowest Occurred 1977 1979 1984 1975 1992 1974 2000 1992 1984 1988 1976 1989 1977
Mean Min. Temperature (F) 26.0 28.4 35.4 43.2 53.2 61.9 66.8 65.4 58.7 47.1 38.1 30.1 46.2
Highest Mean Min. Temperature (F) 35.4 34.9 40.1 47.6 59.4 65.5 69.6 68.8 62.3 55.3 47.4 37.0 69.6
Year Highest Occurred 1998 1997 1973 1998 1991 1989 1999 1978 1977 1971 1985 1982 1999
Lowest Mean Min. Temperature (F) 13.8 17.9 30.5 36.8 49.4 58.3 63.5 61.3 54.7 41.0 29.5 18.1 13.8
Year Lowest Occurred 1977 1979 1981 1971 1992 1979 1974 1976 1984 1987 1976 1989 1977
Mean Precipitation (in.) 3.42 2.85 3.96 3.11 4.13 3.81 4.12 4.60 4.31 3.36 3.21 3.16 44.04
Highest Precipitation (in.) 9.06 6.15 8.89 8.05 6.98 13.48 12.40 14.65 12.47 8.05 7.00 6.04 14.65
Year Highest Occurred 1978 1998 1994 1983 1971 1972 1975 1971 1999 1971 1985 1973 1971
Lowest Precipitation (in.) 0.49 0.52 0.95 0.40 0.83 0.95 0.80 0.59 0.47 0.52 0.24 0.42 0.24
Year Lowest Occurred 1981 1978 1986 1985 1997 1976 1998 1989 1978 2000 1981 1980 1981
Heating Degree Days (F) 930. 744. 571. 282. 95. 9. 0. 1. 30. 254. 500. 801. 4217.
Cooling Degree Days (F) 0. 0. 0. 6. 60. 207. 335. 293. 130. 23. 1. 0. 1055.

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