TIDEWATER FISH HATCHERY, OREGON

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 50.4 55.1 57.6 60.9 65.7 70.3 74.4 76.0 74.9 67.0 56.0 49.9 63.2
Highest Mean Max. Temperature (F) 55.7 62.8 64.7 68.4 71.9 74.3 79.2 82.4 81.2 73.4 60.7 53.9 65.5
Year Highest Occurred 1961 1968 1986 1989 1969 1986 1985 1967 1967 1987 1986 1986 1987
Lowest Mean Max. Temperature (F) 44.6 47.0 49.1 56.0 59.7 66.3 71.6 71.7 69.4 60.6 49.6 42.2 60.6
Year Lowest Occurred 1969 1985 1985 1975 1985 1971 1987 1973 1977 1975 1985 1984 1985
Mean Temperature (F) 43.5 46.6 48.1 50.4 54.9 59.5 63.2 64.2 62.5 56.4 48.6 43.5 53.5
Highest Mean Temperature (F) 48.6 53.2 54.3 56.0 59.2 62.4 69.2 67.7 66.5 59.8 51.8 48.2 55.4
Year Highest Occurred 1986 1963 1986 1989 1969 1986 1983 1967 1967 1965 1986 1973 1986
Lowest Mean Temperature (F) 38.4 39.6 41.1 46.1 50.6 56.2 60.9 61.1 59.1 53.4 42.3 36.4 50.5
Year Lowest Occurred 1979 1989 1985 1985 1985 1984 1962 1973 1970 1961 1985 1990 1985
Mean Min. Temperature (F) 36.5 38.0 38.7 39.9 44.0 48.6 51.9 52.4 49.9 45.8 41.2 37.1 43.7
Highest Mean Min. Temperature (F) 42.2 45.4 43.9 43.6 46.6 53.6 66.2 54.9 54.4 50.4 45.6 43.7 45.3
Year Highest Occurred 1986 1963 1986 1989 1987 1969 1983 1977 1963 1988 1965 1973 1986
Lowest Mean Min. Temperature (F) 29.7 31.3 33.1 35.6 41.5 45.3 48.5 49.5 45.9 42.8 35.0 28.3 40.4
Year Lowest Occurred 1963 1989 1985 1985 1985 1976 1984 1969 1970 1972 1985 1990 1985
Mean Precipitation (in.) 14.81 11.34 11.32 6.68 4.14 2.55 0.83 1.25 2.88 6.24 13.85 15.54 91.43
Highest Precipitation (in.) 26.02 20.65 20.20 12.48 8.46 6.75 3.16 5.73 6.49 11.94 31.09 25.57 117.54
Year Highest Occurred 1970 1961 1961 1963 1984 1984 1987 1968 1971 1984 1973 1964 1971
Lowest Precipitation (in.) 1.23 3.55 2.16 1.45 0.79 0.39 0.00 0.00 0.00 0.52 2.55 3.93 61.88
Year Lowest Occurred 1985 1973 1965 1977 1982 1987 1973 1981 1975 1987 1976 1976 1976
Heating Degree Days (F) 667. 515. 524. 438. 313. 171. 85. 61. 103. 267. 492. 667. 4303.
Cooling Degree Days (F) 0. 0. 0. 0. 0. 6. 29. 37. 28. 0. 0. 0. 100.

Western Regional Climate Center, wrcc@dri.edu