GRANTS PASS, OREGON

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 47.6 54.9 60.5 67.0 74.6 82.9 90.1 89.8 83.1 70.3 53.8 46.2 68.4
Highest Mean Max. Temperature (F) 52.9 60.9 66.6 75.5 80.9 90.2 95.5 97.8 90.6 82.4 58.1 52.0 71.8
Year Highest Occurred 1986 1988 1986 1987 1969 1987 1985 1967 1974 1988 1987 1977 1987
Lowest Mean Max. Temperature (F) 42.6 48.9 54.1 57.7 66.3 75.3 81.3 82.8 73.2 63.6 48.2 40.8 65.4
Year Lowest Occurred 1962 1969 1975 1967 1977 1980 1983 1976 1978 1975 1985 1985 1983
Mean Temperature (F) 40.2 44.7 48.3 52.8 59.1 66.3 71.7 71.3 64.9 55.8 45.9 39.9 55.1
Highest Mean Temperature (F) 45.2 50.4 53.0 58.3 63.7 70.8 75.2 76.5 69.2 62.2 48.6 44.8 56.8
Year Highest Occurred 1986 1963 1986 1990 1969 1987 1985 1967 1990 1988 1970 1973 1987
Lowest Mean Temperature (F) 34.1 39.9 45.2 47.0 54.3 61.7 67.4 67.8 60.1 52.2 39.5 34.1 53.5
Year Lowest Occurred 1963 1989 1975 1967 1977 1980 1983 1975 1978 1969 1985 1990 1971
Mean Min. Temperature (F) 32.7 34.4 36.0 38.4 43.6 49.7 53.1 52.7 46.7 41.2 37.9 33.7 41.7
Highest Mean Min. Temperature (F) 38.6 40.6 41.8 43.1 46.8 53.6 55.3 56.6 49.8 46.5 41.9 39.8 44.4
Year Highest Occurred 1970 1963 1983 1989 1983 1969 1967 1977 1969 1979 1981 1981 1983
Lowest Mean Min. Temperature (F) 23.7 27.8 31.8 34.4 41.6 45.6 50.3 49.3 42.8 36.9 30.7 25.3 39.4
Year Lowest Occurred 1963 1964 1969 1970 1964 1962 1962 1980 1965 1974 1985 1990 1985
Mean Precipitation (in.) 5.17 3.82 3.51 1.80 1.16 0.53 0.22 0.48 0.90 2.42 5.31 5.69 31.01
Highest Precipitation (in.) 12.03 10.68 8.82 5.32 4.08 2.72 1.08 3.33 4.19 8.86 15.15 16.06 49.78
Year Highest Occurred 1970 1983 1983 1963 1990 1982 1987 1976 1977 1962 1973 1964 1983
Lowest Precipitation (in.) 0.15 0.18 0.10 0.31 0.00 0.01 0.00 0.00 0.00 0.03 0.67 0.65 15.35
Year Lowest Occurred 1985 1988 1965 1987 1982 1974 1988 1987 1987 1988 1976 1976 1976
Heating Degree Days (F) 769. 568. 518. 372. 193. 58. 7. 11. 82. 290. 573. 778. 4219.
Cooling Degree Days (F) 0. 0. 0. 6. 10. 97. 215. 206. 79. 0. 0. 0. 613.

Western Regional Climate Center, wrcc@dri.edu