VALLECITO DAM, COLORADO

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 36.9 40.9 46.3 55.9 64.8 75.4 80.5 77.7 71.1 61.4 47.8 38.7 58.1
Highest Mean Max. Temperature (F) 47.6 48.8 58.0 62.4 71.8 80.4 84.8 82.8 77.5 67.8 53.1 48.8 60.8
Year Highest Occurred 1981 1981 1972 1989 1984 1981 1980 1962 1979 1964 1967 1980 1981
Lowest Mean Max. Temperature (F) 29.0 34.5 40.5 48.0 59.4 70.0 73.0 70.5 63.4 51.4 39.5 28.9 53.6
Year Lowest Occurred 1979 1966 1973 1975 1980 1965 1990 1990 1986 1984 1972 1990 1990
Mean Temperature (F) 21.1 25.1 31.6 40.5 48.6 57.6 63.8 61.7 54.9 45.7 34.2 25.0 42.5
Highest Mean Temperature (F) 32.3 32.4 40.4 45.5 54.2 61.5 66.4 64.4 59.0 51.0 38.8 34.7 45.5
Year Highest Occurred 1981 1970 1972 1989 1984 1981 1963 1969 1983 1963 1966 1980 1981
Lowest Mean Temperature (F) 14.7 17.5 25.4 34.1 44.3 53.9 58.6 56.0 50.7 39.7 27.5 14.6 38.9
Year Lowest Occurred 1979 1966 1964 1975 1990 1975 1990 1990 1986 1984 1972 1990 1990
Mean Min. Temperature (F) 5.3 9.2 16.9 25.0 32.4 39.7 47.1 45.7 38.8 29.9 20.5 11.2 26.8
Highest Mean Min. Temperature (F) 17.0 18.2 23.3 28.7 36.6 43.5 49.3 49.7 42.8 35.8 25.2 20.6 30.2
Year Highest Occurred 1981 1986 1967 1986 1984 1988 1969 1982 1963 1972 1966 1980 1981
Lowest Mean Min. Temperature (F) -1.4 -0.6 9.0 19.6 28.0 35.2 44.1 41.5 35.0 25.6 14.4 0.2 23.6
Year Lowest Occurred 1977 1964 1964 1970 1990 1975 1990 1990 1973 1976 1979 1990 1975
Mean Precipitation (in.) 2.08 1.90 2.47 1.70 1.49 1.05 2.56 3.47 2.71 2.67 2.30 2.54 26.94
Highest Precipitation (in.) 8.18 5.82 5.59 4.46 2.75 4.04 4.90 6.80 5.66 12.42 6.47 6.69 36.93
Year Highest Occurred 1980 1976 1961 1990 1980 1969 1990 1988 1970 1972 1978 1966 1969
Lowest Precipitation (in.) 0.08 0.13 0.07 0.10 0.11 0.00 0.47 0.54 0.11 0.03 0.00 0.17 13.72
Year Lowest Occurred 1972 1972 1988 1988 1974 1980 1966 1962 1979 1967 1989 1976 1989
Heating Degree Days (F) 1361. 1117. 1035. 735. 508. 228. 77. 122. 303. 598. 924. 1240. 8248.
Cooling Degree Days (F) 0. 0. 0. 0. 0. 6. 39. 20. 0. 0. 0. 0. 65.

Western Regional Climate Center, wrcc@dri.edu