MILL CREEK DAM, WASHINGTON

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F)
Highest Mean Max. Temperature (F)
Year Highest Occurred
Lowest Mean Max. Temperature (F)
Year Lowest Occurred
Mean Temperature (F)
Highest Mean Temperature (F)
Year Highest Occurred
Lowest Mean Temperature (F)
Year Lowest Occurred
Mean Min. Temperature (F)
Highest Mean Min. Temperature (F)
Year Highest Occurred
Lowest Mean Min. Temperature (F)
Year Lowest Occurred
Mean Precipitation (in.) 2.17 1.71 2.04 1.60 1.50 1.01 0.54 0.79 0.95 1.44 2.48 2.43 18.66
Highest Precipitation (in.) 5.37 3.59 4.25 3.88 3.57 3.05 2.15 3.23 2.28 3.32 5.62 5.06 25.95
Year Highest Occurred 1970 1986 1983 1978 1962 1971 1966 1977 1971 1962 1973 1973 1983
Lowest Precipitation (in.) 0.70 0.26 0.41 0.24 0.39 0.24 0.00 0.00 0.00 0.00 0.62 0.35 12.75
Year Lowest Occurred 1985 1964 1965 1966 1970 1963 1984 1988 1987 1987 1969 1965 1967
Heating Degree Days (F)
Cooling Degree Days (F)

Western Regional Climate Center, wrcc@dri.edu