WINDOW ROCK 4 SW, ARIZONA

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 42.8 47.3 53.1 62.8 72.0 82.4 85.3 82.8 76.3 66.7 53.5 44.7 64.1
Highest Mean Max. Temperature (F) 53.5 53.2 64.4 74.9 79.7 88.8 89.5 86.4 80.2 73.6 59.7 53.1 68.6
Year Highest Occurred 1986 1970 1989 1989 1984 1990 1971 1962 1989 1988 1967 1980 1989
Lowest Mean Max. Temperature (F) 34.4 39.5 45.0 55.7 66.6 77.2 74.6 78.4 71.5 56.5 45.3 37.5 61.3
Year Lowest Occurred 1979 1975 1973 1964 1980 1965 1979 1968 1986 1984 1972 1990 1979
Mean Temperature (F) 28.5 33.2 38.5 46.3 54.6 64.6 70.0 67.7 60.3 49.8 38.8 30.2 48.5
Highest Mean Temperature (F) 37.8 37.9 47.4 55.3 61.6 71.3 73.1 69.9 64.9 55.6 43.4 37.1 51.8
Year Highest Occurred 1986 1986 1989 1989 1984 1981 1980 1969 1963 1988 1962 1980 1989
Lowest Mean Temperature (F) 22.2 25.7 32.4 40.4 49.8 58.8 61.5 63.8 57.1 44.6 33.3 24.1 45.3
Year Lowest Occurred 1979 1964 1964 1975 1975 1965 1979 1968 1985 1970 1979 1990 1975
Mean Min. Temperature (F) 14.1 19.0 23.9 29.7 37.2 46.7 54.6 52.6 44.1 32.9 24.1 15.5 32.9
Highest Mean Min. Temperature (F) 22.1 25.3 30.4 35.6 43.5 57.5 58.9 55.1 51.0 38.9 28.3 25.2 36.1
Year Highest Occurred 1986 1986 1989 1989 1984 1981 1980 1982 1963 1963 1962 1983 1986
Lowest Mean Min. Temperature (F) 7.9 9.8 18.0 24.1 31.8 40.3 48.4 46.9 39.4 25.4 16.2 8.1 28.5
Year Lowest Occurred 1964 1964 1964 1974 1975 1965 1979 1975 1968 1975 1975 1968 1975
Mean Precipitation (in.) 0.66 0.71 0.92 0.61 0.37 0.41 1.89 2.14 1.39 1.26 1.01 0.91 12.28
Highest Precipitation (in.) 2.10 1.70 2.02 2.66 1.67 1.83 4.36 5.87 3.36 5.54 3.27 2.70 17.81
Year Highest Occurred 1980 1980 1973 1985 1978 1972 1986 1963 1964 1972 1981 1965 1965
Lowest Precipitation (in.) 0.03 0.03 0.01 0.00 0.00 0.00 0.00 0.17 0.01 0.00 0.05 0.00 6.40
Year Lowest Occurred 1986 1967 1972 1989 1974 1985 1979 1974 1979 1975 1980 1981 1989
Heating Degree Days (F) 1132. 890. 822. 561. 327. 98. 14. 12. 155. 471. 786. 1079. 6347.
Cooling Degree Days (F) 0. 0. 0. 0. 0. 86. 169. 96. 14. 0. 0. 0. 365.

Western Regional Climate Center, wrcc@dri.edu