SUMMER LAKE 1 S, OREGON

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 40.6 46.0 50.4 58.0 67.5 76.5 85.5 84.3 75.9 64.5 48.3 40.9 61.5
Highest Mean Max. Temperature (F) 48.6 52.5 57.5 68.1 73.2 83.0 90.5 90.5 84.5 75.3 57.2 46.1 64.5
Year Highest Occurred 1986 1988 1986 1987 1966 1974 1990 1967 1990 1988 1976 1979 1990
Lowest Mean Max. Temperature (F) 33.8 37.7 43.2 47.7 57.7 70.3 77.6 75.3 66.8 55.7 40.3 35.7 58.6
Year Lowest Occurred 1985 1989 1971 1967 1977 1980 1987 1976 1986 1969 1985 1971 1982
Mean Temperature (F) 31.6 36.3 39.8 45.2 53.4 61.7 68.5 67.1 59.2 49.4 38.4 32.1 48.6
Highest Mean Temperature (F) 40.3 42.9 45.9 53.2 57.4 66.8 73.0 72.0 64.9 56.9 41.8 36.6 50.9
Year Highest Occurred 1986 1963 1986 1990 1987 1986 1985 1967 1990 1988 1990 1981 1986
Lowest Mean Temperature (F) 24.6 26.4 33.9 38.0 47.0 57.1 62.6 61.4 53.8 42.3 31.7 26.7 46.9
Year Lowest Occurred 1962 1989 1971 1967 1977 1980 1987 1976 1986 1969 1985 1990 1971
Mean Min. Temperature (F) 22.6 26.5 29.0 32.4 39.2 46.8 51.5 49.9 42.4 34.3 28.4 23.3 35.5
Highest Mean Min. Temperature (F) 32.0 33.7 34.4 39.4 42.6 51.6 55.9 54.2 47.4 38.5 32.7 29.5 38.4
Year Highest Occurred 1986 1963 1983 1990 1969 1986 1985 1986 1963 1988 1983 1973 1986
Lowest Mean Min. Temperature (F) 12.5 15.1 24.3 28.0 36.1 43.3 47.1 45.1 37.2 28.8 22.5 16.4 34.0
Year Lowest Occurred 1977 1989 1976 1964 1975 1976 1963 1980 1961 1969 1978 1990 1976
Mean Precipitation (in.) 1.43 1.04 1.02 0.70 0.98 1.02 0.48 0.60 0.58 0.98 1.65 1.90 12.38
Highest Precipitation (in.) 3.61 4.31 3.38 2.69 3.32 3.38 3.87 2.58 2.12 7.52 5.80 12.57 22.40
Year Highest Occurred 1970 1986 1983 1978 1977 1965 1987 1976 1977 1962 1988 1964 1964
Lowest Precipitation (in.) 0.13 0.00 0.06 0.03 0.13 0.00 0.00 0.00 0.00 0.00 0.06 0.04 7.22
Year Lowest Occurred 1984 1965 1965 1977 1970 1973 1989 1986 1987 1988 1976 1976 1974
Heating Degree Days (F) 1035. 804. 781. 594. 360. 143. 36. 57. 210. 484. 798. 1020. 6322.
Cooling Degree Days (F) 0. 0. 0. 0. 0. 44. 145. 122. 36. 0. 0. 0. 347.

Western Regional Climate Center, wrcc@dri.edu