GRAND LAKE 1 NW, COLORADO

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 30.5 34.5 40.1 48.7 58.9 69.8 75.4 73.3 66.3 56.0 40.2 31.4 52.1
Highest Mean Max. Temperature (F) 39.0 39.3 47.8 55.5 65.1 76.5 81.4 77.5 72.4 64.1 46.6 40.3 54.7
Year Highest Occurred 1981 1987 1986 1987 1963 1990 1978 1988 1979 1963 1962 1980 1990
Lowest Mean Max. Temperature (F) 22.6 27.1 31.4 40.7 53.9 62.3 71.7 68.4 58.0 43.6 31.7 25.6 49.8
Year Lowest Occurred 1979 1964 1965 1970 1968 1969 1973 1975 1961 1969 1979 1978 1971
Mean Temperature (F) 15.9 19.1 25.1 33.6 42.8 51.3 56.8 54.9 48.1 38.9 26.2 17.5 35.9
Highest Mean Temperature (F) 22.6 24.6 32.6 38.9 46.4 56.3 59.8 58.9 52.8 44.2 30.8 27.3 38.5
Year Highest Occurred 1986 1986 1986 1981 1989 1988 1980 1983 1990 1988 1981 1980 1986
Lowest Mean Temperature (F) 9.2 10.5 16.1 25.0 39.7 47.3 52.9 51.0 42.6 31.9 18.3 13.2 33.1
Year Lowest Occurred 1962 1964 1965 1973 1975 1969 1962 1974 1961 1970 1979 1978 1973
Mean Min. Temperature (F) 1.3 3.6 10.1 18.4 26.6 32.8 38.2 36.4 29.7 21.9 12.1 3.6 19.6
Highest Mean Min. Temperature (F) 9.1 13.4 17.4 24.0 30.6 38.0 41.7 41.4 34.1 27.0 17.6 14.3 22.9
Year Highest Occurred 1969 1986 1989 1985 1987 1988 1984 1983 1990 1988 1981 1980 1986
Lowest Mean Min. Temperature (F) -9.5 -8.8 0.8 8.2 23.9 29.8 32.2 30.3 26.2 16.8 4.8 -2.9 15.9
Year Lowest Occurred 1961 1974 1965 1973 1970 1973 1962 1974 1974 1970 1979 1976 1973
Mean Precipitation (in.) 1.66 1.43 1.54 1.91 1.93 1.63 2.13 2.20 1.78 1.42 1.36 1.69 20.68
Highest Precipitation (in.) 4.83 5.93 4.50 3.43 3.77 6.44 4.42 6.12 6.28 4.07 3.44 4.39 31.47
Year Highest Occurred 1980 1986 1983 1986 1973 1969 1973 1984 1961 1969 1985 1983 1983
Lowest Precipitation (in.) 0.32 0.33 0.38 0.78 0.18 0.10 0.84 0.33 0.11 0.10 0.58 0.17 14.82
Year Lowest Occurred 1961 1981 1968 1987 1974 1980 1979 1985 1979 1965 1962 1986 1987
Heating Degree Days (F) 1522. 1285. 1237. 942. 688. 411. 254. 313. 507. 809. 1164. 1473. 10605.
Cooling Degree Days (F) 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

Western Regional Climate Center, wrcc@dri.edu