BLACK RIVER PUMPS, ARIZONA

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 48.2 52.0 56.4 65.6 74.9 85.3 87.1 83.7 78.5 69.3 57.5 49.6 67.3
Highest Mean Max. Temperature (F) 58.0 56.9 67.0 72.8 80.7 91.6 90.8 89.5 82.8 74.9 63.0 58.7 69.7
Year Highest Occurred 1986 1972 1972 1989 1984 1990 1963 1962 1979 1979 1967 1980 1981
Lowest Mean Max. Temperature (F) 41.4 43.6 47.6 57.6 70.9 80.7 83.8 79.7 74.7 61.6 50.2 44.4 65.5
Year Lowest Occurred 1979 1966 1973 1975 1975 1965 1986 1968 1988 1971 1972 1971 1973
Mean Temperature (F) 34.2 37.6 41.5 48.9 57.4 67.3 71.7 69.4 63.8 53.9 42.6 35.3 52.0
Highest Mean Temperature (F) 39.8 42.0 48.7 54.0 61.5 72.3 74.3 72.9 67.6 58.7 46.5 40.5 53.3
Year Highest Occurred 1986 1976 1972 1989 1984 1990 1966 1962 1983 1987 1965 1980 1981
Lowest Mean Temperature (F) 29.0 29.3 36.8 42.9 54.0 62.9 69.2 65.4 59.9 48.2 37.9 31.0 50.6
Year Lowest Occurred 1963 1966 1962 1975 1975 1965 1986 1968 1988 1970 1972 1967 1964
Mean Min. Temperature (F) 20.1 23.1 26.6 32.2 39.9 49.2 56.4 55.1 49.0 38.4 27.6 21.0 36.6
Highest Mean Min. Temperature (F) 26.7 28.8 34.1 36.4 43.1 53.7 58.5 57.8 53.1 43.5 32.7 25.9 39.0
Year Highest Occurred 1980 1968 1978 1962 1973 1974 1964 1969 1963 1987 1978 1977 1978
Lowest Mean Min. Temperature (F) 13.1 14.7 21.6 26.9 36.4 44.8 52.6 51.1 45.0 32.7 23.3 15.8 34.6
Year Lowest Occurred 1964 1964 1964 1970 1971 1963 1987 1968 1988 1970 1979 1989 1967
Mean Precipitation (in.) 1.47 1.34 1.46 0.64 0.49 0.66 3.31 3.20 1.97 1.64 1.26 1.85 19.29
Highest Precipitation (in.) 4.52 5.11 4.22 3.73 1.81 3.76 7.62 6.21 3.91 6.84 3.56 7.51 30.16
Year Highest Occurred 1980 1980 1983 1988 1973 1979 1990 1963 1983 1972 1978 1965 1983
Lowest Precipitation (in.) 0.00 0.00 0.00 0.00 0.00 0.00 1.56 0.91 0.05 0.00 0.05 0.03 11.90
Year Lowest Occurred 1972 1984 1972 1989 1981 1989 1962 1975 1973 1982 1989 1981 1989
Heating Degree Days (F) 955. 767. 729. 483. 240. 38. 0. 9. 76. 349. 672. 921. 5239.
Cooling Degree Days (F) 0. 0. 0. 0. 0. 107. 208. 145. 40. 5. 0. 0. 505.

Western Regional Climate Center, wrcc@dri.edu