WILLIAMS, ARIZONA

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 45.7 48.1 51.4 59.8 68.7 79.0 82.6 79.8 74.4 65.3 53.8 46.9 63.0
Highest Mean Max. Temperature (F) 54.4 54.1 63.7 69.6 77.5 85.6 86.8 83.4 80.5 71.1 59.3 57.1 65.7
Year Highest Occurred 1986 1972 1972 1989 1984 1974 1971 1985 1979 1988 1980 1980 1989
Lowest Mean Max. Temperature (F) 38.2 40.2 43.7 52.5 62.9 71.8 78.6 74.5 68.0 57.9 48.5 39.5 60.6
Year Lowest Occurred 1979 1966 1973 1975 1980 1965 1965 1968 1986 1971 1972 1971 1964
Mean Temperature (F) 33.9 36.0 39.0 46.1 54.3 63.7 68.7 66.5 60.9 51.8 41.3 35.1 49.8
Highest Mean Temperature (F) 41.7 41.6 47.0 54.4 62.5 69.2 71.5 69.7 64.8 57.0 45.7 44.0 52.0
Year Highest Occurred 1986 1963 1989 1989 1984 1974 1971 1962 1979 1988 1962 1980 1981
Lowest Mean Temperature (F) 27.1 29.2 31.6 39.8 49.1 57.5 65.8 62.2 56.9 44.9 35.2 28.1 48.3
Year Lowest Occurred 1979 1966 1973 1973 1980 1965 1987 1968 1965 1971 1972 1967 1964
Mean Min. Temperature (F) 21.9 23.7 26.6 32.4 39.9 48.5 54.6 53.1 47.3 38.2 28.8 23.2 36.5
Highest Mean Min. Temperature (F) 28.9 31.4 33.7 39.2 47.4 54.0 57.1 56.2 50.7 43.2 33.8 30.9 39.1
Year Highest Occurred 1986 1982 1989 1989 1984 1981 1961 1962 1983 1963 1962 1980 1981
Lowest Mean Min. Temperature (F) 14.5 17.1 19.5 24.8 33.2 43.1 50.5 47.7 43.0 31.9 21.9 16.4 33.5
Year Lowest Occurred 1973 1964 1973 1973 1979 1965 1987 1979 1978 1971 1972 1967 1979
Mean Precipitation (in.) 1.79 1.76 2.16 1.11 0.73 0.45 2.93 3.02 1.82 1.48 1.87 2.05 21.17
Highest Precipitation (in.) 5.76 7.23 6.01 5.55 1.93 2.12 7.25 8.82 6.99 10.51 6.44 7.57 39.93
Year Highest Occurred 1980 1980 1970 1965 1987 1972 1990 1963 1983 1972 1965 1965 1965
Lowest Precipitation (in.) 0.00 0.00 0.00 0.03 0.00 0.00 0.92 0.28 0.00 0.00 0.00 0.05 14.00
Year Lowest Occurred 1972 1967 1988 1989 1988 1989 1961 1980 1988 1964 1989 1985 1977
Heating Degree Days (F) 964. 812. 806. 567. 339. 106. 10. 32. 142. 414. 711. 927. 5830.
Cooling Degree Days (F) 0. 0. 0. 0. 7. 67. 125. 78. 19. 0. 0. 0. 296.

Western Regional Climate Center, wrcc@dri.edu