SHEMYA USAF BASE, ALASKA

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 33.7 33.1 34.7 37.7 41.2 44.6 48.9 51.6 50.7 45.4 39.2 35.6 41.4
Highest Mean Max. Temperature (F) 37.1 37.4 36.9 40.2 43.1 46.8 51.7 55.6 53.9 47.9 43.0 39.3 42.8
Year Highest Occurred 1963 1982 1987 1990 1990 1974 1990 1986 1986 1986 1990 1990 1990
Lowest Mean Max. Temperature (F) 29.4 30.0 31.0 35.6 39.0 41.5 46.2 48.8 47.3 43.1 36.5 33.0 40.0
Year Lowest Occurred 1981 1977 1977 1976 1973 1980 1964 1971 1964 1964 1972 1974 1964
Mean Temperature (F) 31.0 30.5 31.9 35.0 38.6 42.2 46.6 49.2 47.8 42.2 36.0 32.8 38.7
Highest Mean Temperature (F) 34.5 34.8 34.3 37.5 40.5 44.3 49.4 52.8 51.0 45.1 40.4 37.2 40.4
Year Highest Occurred 1963 1982 1987 1990 1967 1974 1981 1986 1986 1985 1990 1990 1986
Lowest Mean Temperature (F) 26.0 27.3 27.6 33.0 36.5 39.4 44.2 46.6 44.7 39.6 31.3 29.0 37.4
Year Lowest Occurred 1981 1977 1977 1988 1973 1980 1964 1971 1964 1980 1977 1974 1971
Mean Min. Temperature (F) 28.2 27.8 29.0 32.2 35.9 39.8 44.2 46.8 44.9 39.0 32.8 29.9 35.9
Highest Mean Min. Temperature (F) 32.5 32.1 31.9 34.7 38.4 41.7 47.1 50.2 48.4 42.6 37.8 35.0 38.0
Year Highest Occurred 1974 1982 1989 1990 1967 1977 1981 1981 1977 1985 1990 1990 1986
Lowest Mean Min. Temperature (F) 22.5 24.5 24.2 29.8 33.1 37.2 41.3 44.3 41.8 35.5 23.9 25.0 34.1
Year Lowest Occurred 1981 1977 1977 1988 1971 1980 1966 1963 1967 1980 1977 1974 1966
Mean Precipitation (in.) 2.49 1.96 1.90 1.82 1.65 1.87 2.69 4.11 2.93 3.83 4.04 2.95 32.24
Highest Precipitation (in.) 5.63 3.44 3.56 3.97 3.37 7.51 8.71 9.36 5.06 8.59 7.99 6.00 47.28
Year Highest Occurred 1987 1976 1967 1969 1978 1978 1967 1990 1964 1962 1975 1965 1978
Lowest Precipitation (in.) 1.22 0.73 0.42 0.34 0.05 0.14 0.72 0.74 1.69 1.90 0.99 1.01 17.27
Year Lowest Occurred 1988 1968 1961 1962 1973 1981 1968 1986 1972 1966 1968 1988 1968
Heating Degree Days (F) 1054. 966. 1026. 900. 818. 684. 570. 490. 516. 707. 870. 998. 9599.
Cooling Degree Days (F) 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

Western Regional Climate Center, wrcc@dri.edu