ATTU N A U, ALASKA

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 34.7 33.9 36.1 39.1 43.3 48.5 53.1 55.3 52.9 47.2 40.0 35.6 43.3
Highest Mean Max. Temperature (F) 38.7 41.0 42.5 46.0 46.5 55.4 60.3 60.5 58.8 54.7 46.9 39.9 47.1
Year Highest Occurred 1969 1982 1980 1982 1982 1981 1981 1981 1989 1989 1989 1981 1981
Lowest Mean Max. Temperature (F) 31.7 30.1 33.1 34.0 39.5 44.0 49.3 50.8 49.3 41.6 35.7 31.4 39.9
Year Lowest Occurred 1975 1975 1975 1976 1976 1970 1976 1976 1964 1976 1975 1982 1976
Mean Temperature (F) 30.7 30.0 32.2 35.4 39.3 44.2 48.8 50.8 48.4 42.2 35.5 31.7 39.1
Highest Mean Temperature (F) 35.1 36.8 35.6 39.9 42.4 47.7 53.7 56.5 54.6 49.2 41.7 35.8 42.1
Year Highest Occurred 1969 1982 1987 1979 1989 1981 1981 1989 1989 1975 1989 1990 1989
Lowest Mean Temperature (F) 23.5 26.5 25.8 29.9 33.8 41.0 46.0 46.6 43.4 38.2 30.6 25.5 36.8
Year Lowest Occurred 1987 1988 1985 1976 1975 1971 1983 1987 1964 1964 1977 1982 1976
Mean Min. Temperature (F) 26.7 26.1 28.2 31.6 35.2 39.9 44.4 46.2 43.9 37.2 30.9 27.7 34.8
Highest Mean Min. Temperature (F) 32.2 32.6 32.3 36.1 40.4 43.7 49.4 53.0 50.3 45.8 36.5 32.3 38.0
Year Highest Occurred 1963 1982 1979 1979 1989 1989 1989 1989 1989 1975 1989 1990 1989
Lowest Mean Min. Temperature (F) 14.7 20.6 16.3 25.0 25.3 36.2 40.6 42.0 37.4 31.9 23.0 19.5 31.6
Year Lowest Occurred 1987 1988 1985 1988 1975 1986 1983 1987 1964 1964 1977 1982 1985
Mean Precipitation (in.) 3.64 3.30 3.06 3.09 2.50 2.59 4.00 5.47 5.80 5.30 4.37 4.16 47.28
Highest Precipitation (in.) 9.32 15.45 17.80 16.60 8.02 9.15 10.52 21.16 15.52 11.54 9.50 21.60 88.40
Year Highest Occurred 1984 1965 1965 1965 1961 1961 1969 1983 1979 1988 1966 1970 1965
Lowest Precipitation (in.) 0.33 0.99 0.09 0.02 0.00 0.04 0.25 0.50 0.08 0.11 0.25 0.24 11.33
Year Lowest Occurred 1969 1968 1969 1967 1968 1967 1968 1968 1982 1968 1968 1968 1968
Heating Degree Days (F) 1063. 980. 1017. 888. 797. 624. 502. 440. 498. 707. 885. 1032. 9433.
Cooling Degree Days (F) 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

Western Regional Climate Center, wrcc@dri.edu