HOLLY, COLORADO

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 43.5 49.4 58.1 69.2 77.6 88.5 94.3 91.5 82.1 72.0 56.2 45.5 69.0
Highest Mean Max. Temperature (F) 60.1 59.7 69.5 77.8 84.6 93.7 101.1 98.0 88.4 81.6 63.5 53.9 72.2
Year Highest Occurred 1986 1976 1986 1981 1962 1990 1980 1983 1983 1963 1990 1962 1963
Lowest Mean Max. Temperature (F) 30.6 34.8 44.4 58.4 71.5 79.0 89.4 87.0 74.8 59.1 42.5 28.6 66.7
Year Lowest Occurred 1979 1978 1969 1973 1968 1965 1967 1966 1973 1969 1972 1983 1973
Mean Temperature (F) 27.6 33.0 41.2 53.0 62.1 72.9 78.5 75.6 66.0 53.7 39.7 29.9 52.8
Highest Mean Temperature (F) 37.4 39.7 48.5 59.0 67.6 77.2 83.5 84.0 71.5 61.6 45.6 36.4 55.4
Year Highest Occurred 1986 1976 1986 1981 1977 1981 1980 1983 1983 1963 1990 1980 1977
Lowest Mean Temperature (F) 17.1 22.8 30.8 45.8 57.5 67.9 75.0 72.0 61.4 47.7 32.0 18.5 50.5
Year Lowest Occurred 1979 1978 1969 1973 1967 1969 1988 1966 1961 1976 1972 1983 1988
Mean Min. Temperature (F) 11.7 16.6 24.2 36.7 46.5 57.2 62.6 59.7 49.8 35.4 23.2 14.4 36.5
Highest Mean Min. Temperature (F) 22.3 22.6 30.1 42.7 53.6 62.4 66.5 70.0 56.0 41.6 27.7 21.4 39.1
Year Highest Occurred 1981 1980 1973 1985 1977 1977 1965 1983 1969 1963 1990 1975 1981
Lowest Mean Min. Temperature (F) 1.6 10.4 15.8 27.7 40.5 48.2 55.7 53.8 44.6 29.2 18.2 7.1 32.4
Year Lowest Occurred 1963 1989 1964 1988 1988 1987 1988 1978 1961 1966 1986 1966 1988
Mean Precipitation (in.) 0.27 0.33 0.80 1.05 2.53 2.98 2.15 2.11 1.64 0.88 0.53 0.27 15.54
Highest Precipitation (in.) 0.87 1.39 3.36 4.09 6.77 18.82 4.91 7.86 5.38 5.16 1.73 0.98 29.07
Year Highest Occurred 1990 1990 1973 1980 1964 1965 1985 1986 1969 1984 1975 1982 1965
Lowest Precipitation (in.) 0.00 0.00 0.00 0.00 0.00 0.25 0.55 0.02 0.04 0.00 0.00 0.00 8.08
Year Lowest Occurred 1986 1981 1966 1965 1974 1984 1983 1964 1974 1987 1989 1976 1974
Heating Degree Days (F) 1159. 896. 738. 370. 134. 10. 0. 0. 75. 359. 759. 1088. 5588.
Cooling Degree Days (F) 0. 0. 0. 10. 44. 247. 419. 332. 105. 8. 0. 0. 1165.

Western Regional Climate Center, wrcc@dri.edu