HEADWORKS PTLD WTR BUR, OREGON

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 44.9 49.5 53.5 59.0 66.0 72.1 78.0 78.3 72.9 63.3 51.4 45.0 61.2
Highest Mean Max. Temperature (F) 52.1 55.5 61.1 66.5 70.9 79.2 85.4 86.5 79.7 72.9 57.4 51.1 64.6
Year Highest Occurred 1981 1968 1986 1987 1983 1961 1985 1967 1974 1987 1976 1980 1987
Lowest Mean Max. Temperature (F) 37.1 41.8 48.0 53.4 58.6 66.5 72.3 71.5 67.0 57.1 41.6 38.6 58.8
Year Lowest Occurred 1969 1989 1971 1970 1962 1971 1963 1975 1978 1975 1985 1983 1964
Mean Temperature (F) 39.5 42.7 45.3 49.3 55.0 60.5 65.1 65.7 61.5 54.1 45.2 39.8 52.0
Highest Mean Temperature (F) 46.1 48.0 51.3 54.1 58.6 64.7 69.9 71.6 65.6 59.0 49.3 44.4 54.1
Year Highest Occurred 1981 1963 1986 1987 1983 1961 1985 1967 1967 1987 1976 1979 1987
Lowest Mean Temperature (F) 32.2 35.0 41.1 44.9 50.7 56.5 62.1 61.2 57.8 50.6 36.5 33.5 50.4
Year Lowest Occurred 1979 1989 1971 1972 1962 1971 1963 1975 1972 1971 1985 1990 1971
Mean Min. Temperature (F) 33.9 35.8 37.1 39.5 43.9 48.9 52.1 53.0 50.0 44.7 39.1 34.6 42.7
Highest Mean Min. Temperature (F) 40.1 41.0 41.4 42.9 46.4 52.3 54.3 56.7 53.9 48.1 42.8 39.3 44.2
Year Highest Occurred 1981 1963 1986 1990 1987 1969 1985 1967 1963 1988 1965 1973 1986
Lowest Mean Min. Temperature (F) 27.1 28.1 34.0 36.0 41.5 46.1 49.7 50.5 46.1 40.7 31.3 27.6 40.8
Year Lowest Occurred 1979 1989 1985 1975 1964 1962 1962 1973 1961 1972 1985 1990 1985
Mean Precipitation (in.) 11.00 8.74 8.36 6.67 5.04 3.81 1.54 2.18 4.02 6.09 10.49 11.55 79.49
Highest Precipitation (in.) 19.54 19.60 12.75 11.17 9.98 9.22 6.56 7.15 7.72 13.30 18.26 17.89 99.78
Year Highest Occurred 1970 1961 1989 1972 1977 1984 1983 1968 1973 1990 1973 1964 1971
Lowest Precipitation (in.) 0.39 3.36 2.54 2.72 1.95 0.81 0.00 0.02 0.00 0.31 2.13 2.86 58.70
Year Lowest Occurred 1985 1973 1965 1977 1982 1987 1984 1970 1975 1987 1976 1985 1987
Heating Degree Days (F) 791. 624. 611. 471. 310. 153. 59. 73. 142. 338. 594. 781. 4947.
Cooling Degree Days (F) 0. 0. 0. 0. 0. 18. 62. 95. 37. 0. 0. 0. 212.

Western Regional Climate Center, wrcc@dri.edu