SILVERTON, COLORADO

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 33.7 36.8 40.1 46.7 57.5 67.8 73.1 70.7 64.2 56.1 43.1 34.4 52.0
Highest Mean Max. Temperature (F) 42.0 41.8 47.5 55.2 63.2 72.9 78.1 73.1 70.2 62.0 49.4 42.8 55.0
Year Highest Occurred 1981 1988 1989 1989 1974 1990 1980 1985 1979 1965 1965 1980 1989
Lowest Mean Max. Temperature (F) 24.9 29.8 33.9 39.6 52.6 62.2 67.6 65.7 58.2 45.5 35.3 28.2 49.6
Year Lowest Occurred 1979 1982 1964 1973 1975 1967 1977 1977 1986 1984 1972 1978 1982
Mean Temperature (F) 14.5 17.5 23.2 31.8 41.8 49.4 55.1 53.6 47.1 38.7 26.0 16.4 34.6
Highest Mean Temperature (F) 21.2 22.6 30.4 37.3 45.2 52.7 57.5 56.9 51.3 43.6 33.1 25.8 37.2
Year Highest Occurred 1981 1970 1972 1989 1969 1981 1980 1969 1963 1963 1981 1980 1981
Lowest Mean Temperature (F) 7.8 11.1 17.0 25.8 36.9 47.2 52.5 50.7 43.6 30.6 19.0 10.0 32.6
Year Lowest Occurred 1979 1966 1962 1970 1975 1983 1986 1976 1985 1984 1979 1990 1984
Mean Min. Temperature (F) -4.8 -1.9 6.2 16.8 26.0 31.0 37.1 36.4 29.9 21.3 8.8 -1.5 17.1
Highest Mean Min. Temperature (F) 5.7 5.7 15.3 23.3 28.6 35.2 40.8 40.7 34.3 30.8 18.3 8.8 20.9
Year Highest Occurred 1980 1962 1972 1962 1963 1972 1969 1983 1969 1972 1981 1980 1981
Lowest Mean Min. Temperature (F) -16.1 -9.9 -2.8 11.1 21.2 27.0 31.7 31.8 23.7 15.7 1.4 -10.4 13.7
Year Lowest Occurred 1984 1985 1987 1970 1975 1989 1987 1985 1987 1984 1961 1990 1987
Mean Precipitation (in.) 1.57 1.82 2.18 1.60 1.68 1.28 2.89 3.07 2.76 2.27 1.84 2.19 25.15
Highest Precipitation (in.) 4.18 5.20 6.53 3.04 5.34 4.43 5.54 5.99 7.45 6.23 5.32 6.40 35.14
Year Highest Occurred 1979 1989 1985 1985 1981 1969 1981 1982 1970 1972 1985 1981 1985
Lowest Precipitation (in.) 0.12 0.10 0.49 0.43 0.00 0.00 0.46 0.84 0.28 0.00 0.19 0.30 18.92
Year Lowest Occurred 1986 1972 1971 1969 1974 1980 1980 1974 1979 1964 1989 1976 1967
Heating Degree Days (F) 1566. 1330. 1296. 996. 719. 468. 307. 353. 537. 815. 1170. 1507. 11064.
Cooling Degree Days (F) 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

Western Regional Climate Center, wrcc@dri.edu