MALHEUR BRANCH EXP STN, OREGON

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 33.4 42.4 54.0 63.4 73.0 82.3 91.1 89.2 78.3 64.7 47.5 35.5 62.9
Highest Mean Max. Temperature (F) 41.9 50.7 59.9 72.8 78.3 91.5 95.7 95.7 88.3 76.1 52.1 42.7 65.8
Year Highest Occurred 1990 1963 1986 1987 1966 1961 1985 1967 1990 1988 1981 1977 1987
Lowest Mean Max. Temperature (F) 22.0 27.4 47.7 55.6 67.8 76.6 84.8 82.1 69.5 59.0 36.3 19.9 58.6
Year Lowest Occurred 1979 1989 1985 1975 1977 1984 1983 1968 1985 1969 1985 1985 1985
Mean Temperature (F) 25.7 33.2 42.4 50.2 59.0 67.6 74.6 72.5 62.2 50.2 37.8 27.9 50.3
Highest Mean Temperature (F) 34.1 40.8 47.9 56.4 63.9 74.2 78.6 77.6 70.3 58.0 42.3 36.2 52.2
Year Highest Occurred 1978 1963 1986 1987 1987 1961 1975 1967 1990 1988 1981 1977 1987
Lowest Mean Temperature (F) 12.4 16.2 37.4 44.8 55.4 63.2 69.9 67.6 54.6 46.0 26.8 11.2 45.4
Year Lowest Occurred 1979 1989 1976 1970 1984 1980 1983 1976 1985 1985 1985 1985 1985
Mean Min. Temperature (F) 17.9 24.1 30.8 37.0 45.0 52.9 58.1 55.8 46.0 35.6 28.1 20.3 37.6
Highest Mean Min. Temperature (F) 28.7 31.3 35.8 41.3 49.9 58.1 63.1 60.5 52.3 41.2 33.9 29.6 40.1
Year Highest Occurred 1981 1983 1986 1990 1987 1977 1975 1961 1990 1963 1983 1977 1973
Lowest Mean Min. Temperature (F) 2.8 4.9 24.0 33.0 42.2 48.8 55.0 50.5 39.7 31.4 17.3 2.5 32.2
Year Lowest Occurred 1979 1989 1965 1970 1984 1976 1983 1985 1985 1985 1985 1985 1985
Mean Precipitation (in.) 1.27 0.94 0.98 0.73 0.82 0.79 0.24 0.52 0.54 0.64 1.26 1.39 10.12
Highest Precipitation (in.) 3.92 2.29 3.73 3.51 2.72 1.81 0.76 2.20 1.59 2.06 2.76 3.57 16.87
Year Highest Occurred 1970 1986 1983 1978 1962 1963 1982 1968 1985 1982 1981 1983 1983
Lowest Precipitation (in.) 0.11 0.08 0.10 0.08 0.04 0.00 0.00 0.00 0.00 0.00 0.15 0.01 5.74
Year Lowest Occurred 1985 1964 1965 1987 1971 1962 1979 1988 1990 1988 1969 1989 1966
Heating Degree Days (F) 1218. 890. 701. 444. 199. 57. 0. 17. 156. 459. 816. 1150. 6107.
Cooling Degree Days (F) 0. 0. 0. 0. 13. 135. 301. 250. 72. 0. 0. 0. 771.
Western Regional Climate Center, wrcc@dri.edu