ABERDEEN, WASHINGTON

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Monthly
Mean Max. Temperature (F) 46.6 49.8 53.3 56.6 60.9 64.2 68.0 69.1 68.7 61.1 51.7 46.6 58.1
Highest Mean Max. Temperature (F) 51.1 55.6 59.9 61.0 66.6 68.3 71.4 73.0 74.3 67.2 56.6 49.7 74.3
Year Highest Occurred 1981 1991 1992 1989 1992 1978 1990 1997 1974 1987 1997 1979 1974
Lowest Mean Max. Temperature (F) 41.1 43.1 48.1 51.3 55.8 60.2 64.5 64.0 63.8 56.5 43.8 41.5 41.1
Year Lowest Occurred 1979 1989 1971 1972 1974 1971 1986 1973 1978 1975 1985 1990 1979
Mean Temperature (F) 41.4 43.3 45.8 48.8 53.4 57.3 60.7 61.5 59.5 52.7 45.6 41.5 51.0
Highest Mean Temperature (F) 45.6 48.3 51.0 51.8 58.0 60.6 63.6 64.8 63.5 55.9 49.5 45.1 64.8
Year Highest Occurred 1994 1991 1992 1989 1993 1978 1995 1997 1995 1988 1995 1980 1997
Lowest Mean Temperature (F) 35.7 36.0 41.2 44.0 49.6 53.9 58.3 57.2 55.6 49.1 37.9 36.0 35.7
Year Lowest Occurred 1979 1989 1971 1975 1974 1971 1986 1973 1972 1984 1985 1990 1979
Mean Min. Temperature (F) 36.1 36.8 38.2 41.0 45.9 50.3 53.4 53.8 50.2 44.2 39.4 36.3 43.8
Highest Mean Min. Temperature (F) 40.8 41.0 42.0 44.8 50.5 53.8 56.4 56.5 55.4 49.2 43.6 41.2 56.5
Year Highest Occurred 1994 1991 1992 1990 1993 1992 1998 1997 1995 1988 1995 1980 1997
Lowest Mean Min. Temperature (F) 30.3 28.8 32.9 36.4 43.4 47.0 50.9 50.3 46.5 40.7 32.0 30.4 28.8
Year Lowest Occurred 1979 1989 1985 1975 1977 1976 1971 1973 1972 1984 1985 1990 1989
Mean Precipitation (in.) 12.53 10.57 9.08 6.18 3.74 2.62 1.48 1.70 3.12 6.98 12.64 13.07 83.71
Highest Precipitation (in.) 19.98 26.57 21.85 12.23 7.77 5.04 5.07 7.10 9.02 17.84 24.02 24.19 26.57
Year Highest Occurred 1998 1999 1997 1981 1984 1981 1983 1991 1978 1975 1990 1998 1999
Lowest Precipitation (in.) 0.58 0.62 1.36 2.28 0.41 0.64 0.12 0.00 0.01 0.52 3.33 3.21 0.00
Year Lowest Occurred 1985 1993 1992 1977 1992 1987 1984 1998 1990 1987 1976 1985 1998
Heating Degree Days (F) 733. 608. 597. 487. 361. 232. 141. 123. 180. 384. 584. 731. 5161.
Cooling Degree Days (F) 0. 0. 0. 0. 0. 1. 7. 12. 14. 0. 0. 0. 34.

Western Regional Climate Center, wrcc@dri.edu