ABERDEEN 20NNE, WASHINGTON

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Monthly
Mean Max. Temperature (F) 44.0 47.0 51.5 56.4 62.7 66.7 72.5 72.9 68.2 58.5 48.4 42.7 57.6
Highest Mean Max. Temperature (F) 49.0 52.5 59.8 61.3 69.7 72.5 81.0 78.6 74.4 63.7 52.4 47.6 81.0
Year Highest Occurred 1981 1991 1992 1989 1992 1978 1985 1986 1974 1987 1976 1979 1985
Lowest Mean Max. Temperature (F) 38.6 41.8 46.2 50.5 56.5 61.7 66.6 67.0 63.6 55.0 41.8 36.9 36.9
Year Lowest Occurred 1993 1989 1976 1972 1974 1971 1993 1976 1978 1984 1985 1990 1990
Mean Temperature (F) 39.1 40.8 43.8 47.3 52.8 56.9 61.4 62.0 57.9 50.4 43.0 38.3 49.5
Highest Mean Temperature (F) 43.2 45.0 49.4 50.5 56.7 60.9 65.1 65.3 61.7 54.0 46.2 42.9 65.3
Year Highest Occurred 1978 1991 1992 1989 1993 1992 1985 1986 1974 1988 1997 1980 1986
Lowest Mean Temperature (F) 33.0 34.2 39.6 43.0 48.4 53.4 58.1 58.8 54.9 47.5 35.7 32.2 32.2
Year Lowest Occurred 1993 1989 1976 1972 1974 1971 1993 1975 1972 1990 1985 1990 1990
Mean Min. Temperature (F) 34.1 34.6 36.0 38.2 42.8 47.0 50.3 51.1 47.6 42.2 37.5 33.9 41.3
Highest Mean Min. Temperature (F) 38.4 38.8 39.8 41.4 47.3 50.2 54.3 53.5 51.9 47.2 41.4 39.0 54.3
Year Highest Occurred 1978 1978 1986 1990 1993 1992 1998 1977 1995 1988 1983 1980 1998
Lowest Mean Min. Temperature (F) 27.3 26.6 31.9 34.2 39.1 44.0 48.1 48.6 44.4 39.2 29.5 27.6 26.6
Year Lowest Occurred 1993 1989 1985 1975 1999 1976 1977 1985 1983 1972 1985 1990 1989
Mean Precipitation (in.) 19.09 17.10 14.63 9.62 6.28 4.20 2.75 2.78 5.39 11.40 20.16 21.41 134.81
Highest Precipitation (in.) 29.67 36.66 33.17 19.22 11.96 9.68 10.18 10.97 14.43 32.17 37.97 37.73 37.97
Year Highest Occurred 1997 1999 1997 1996 1984 1981 1983 1991 1997 1975 1998 1979 1998
Lowest Precipitation (in.) 1.13 0.96 1.90 3.28 0.99 1.37 0.14 0.12 0.07 1.57 5.91 5.12 0.07
Year Lowest Occurred 1985 1993 1992 1998 1992 1972 1984 1986 1993 1972 1976 1985 1993
Heating Degree Days (F) 805. 678. 659. 531. 380. 247. 128. 116. 218. 454. 662. 828. 5706.
Cooling Degree Days (F) 0. 0. 0. 0. 0. 3. 17. 23. 5. 0. 0. 0. 48.

Western Regional Climate Center, wrcc@dri.edu