YREKA, CALIFORNIA

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 44.2 51.1 55.9 63.0 72.6 81.4 90.4 89.4 81.4 69.3 52.6 43.9 66.3
Highest Mean Max. Temperature (F) 53.7 57.2 63.5 73.5 78.9 87.8 95.2 95.3 89.6 80.1 58.2 48.2 69.5
Year Highest Occurred 1986 1988 1986 1987 1973 1987 1988 1986 1974 1988 1967 1989 1987
Lowest Mean Max. Temperature (F) 37.3 45.4 50.5 51.2 62.4 73.9 83.3 79.3 71.9 60.9 45.8 37.3 63.6
Year Lowest Occurred 1977 1969 1975 1967 1977 1980 1983 1976 1978 1984 1985 1967 1975
Mean Temperature (F) 34.1 39.3 43.2 48.8 56.5 64.7 71.5 70.7 63.2 52.9 41.4 34.6 51.7
Highest Mean Temperature (F) 41.9 45.3 48.9 55.2 61.5 70.0 74.9 74.9 68.4 58.5 45.1 39.5 53.8
Year Highest Occurred 1986 1963 1986 1990 1973 1961 1985 1986 1974 1987 1962 1973 1986
Lowest Mean Temperature (F) 27.2 32.2 39.9 41.0 50.1 59.7 65.9 64.9 57.9 47.9 35.2 27.5 50.1
Year Lowest Occurred 1977 1989 1977 1967 1977 1980 1983 1976 1985 1984 1985 1967 1982
Mean Min. Temperature (F) 24.0 27.4 30.4 34.5 40.5 47.9 52.5 52.0 44.9 36.4 30.1 25.2 37.2
Highest Mean Min. Temperature (F) 30.5 33.3 35.5 38.5 44.7 53.4 55.9 56.4 49.3 42.3 35.3 32.5 38.7
Year Highest Occurred 1970 1963 1978 1990 1969 1977 1970 1977 1963 1979 1970 1973 1986
Lowest Mean Min. Temperature (F) 17.0 17.5 26.2 30.0 36.4 43.4 45.9 46.6 40.7 33.2 24.6 16.6 34.1
Year Lowest Occurred 1977 1989 1985 1975 1988 1990 1989 1989 1988 1990 1985 1990 1989
Mean Precipitation (in.) 2.98 2.16 1.88 1.00 0.81 0.85 0.46 0.60 0.73 1.24 2.87 3.74 19.32
Highest Precipitation (in.) 8.01 9.19 5.79 2.19 2.48 4.35 1.99 3.23 3.19 6.00 8.20 13.71 27.73
Year Highest Occurred 1970 1986 1975 1974 1989 1982 1970 1976 1978 1962 1984 1964 1970
Lowest Precipitation (in.) 0.09 0.02 0.02 0.07 0.03 0.00 0.00 0.00 0.00 0.00 0.44 0.27 12.24
Year Lowest Occurred 1985 1988 1965 1985 1982 1973 1989 1986 1988 1978 1976 1976 1985
Heating Degree Days (F) 958. 720. 676. 486. 273. 94. 13. 19. 122. 375. 708. 942. 5386.
Cooling Degree Days (F) 0. 0. 0. 0. 9. 85. 214. 196. 68. 0. 0. 0. 572.

Western Regional Climate Center, wrcc@dri.edu