CARSON FISH HATCHERY, WASHINGTON

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Monthly
Mean Max. Temperature (F) 37.6 42.3 49.9 57.3 64.8 71.3 79.1 80.4 73.1 60.7 45.7 37.7 58.3
Highest Mean Max. Temperature (F) 44.3 50.5 61.0 63.7 73.5 78.9 88.5 87.9 79.2 70.9 51.1 41.8 88.5
Year Highest Occurred 1994 1991 1992 1987 1992 1992 1985 1986 1998 1987 1995 1980 1985
Lowest Mean Max. Temperature (F) 29.5 34.8 43.1 51.5 59.1 65.5 68.9 74.7 65.7 55.5 37.0 30.5 29.5
Year Lowest Occurred 1979 1989 1971 1975 1996 1991 1993 1976 1978 1984 1985 1983 1979
Mean Temperature (F) 32.5 35.5 40.6 45.8 52.3 58.1 63.4 63.9 57.7 48.4 39.5 33.0 47.6
Highest Mean Temperature (F) 37.8 41.8 47.5 50.3 57.2 63.5 68.7 68.0 61.8 53.7 44.2 37.2 68.7
Year Highest Occurred 1994 1992 1992 1987 1992 1992 1998 1986 1998 1988 1995 1973 1998
Lowest Mean Temperature (F) 21.9 27.0 35.3 40.3 48.5 54.5 58.2 60.5 53.2 46.1 30.4 24.5 21.9
Year Lowest Occurred 1979 1989 1971 1975 1977 1980 1993 1980 1985 1984 1985 1985 1979
Mean Min. Temperature (F) 27.3 28.6 31.2 34.3 39.8 44.8 47.6 47.4 42.2 36.1 33.2 28.3 36.7
Highest Mean Min. Temperature (F) 31.9 35.3 36.2 38.8 43.9 48.4 53.6 51.0 46.7 40.8 38.0 33.4 53.6
Year Highest Occurred 1992 1992 1983 1992 1998 1982 1998 1999 1995 1988 1998 1973 1998
Lowest Mean Min. Temperature (F) 14.4 19.1 27.6 29.1 36.9 41.2 44.4 43.8 38.7 32.7 23.8 16.9 14.4
Year Lowest Occurred 1979 1989 1971 1975 1999 1976 1984 1973 1971 1987 1985 1985 1979
Mean Precipitation (in.) 14.25 12.53 9.48 6.29 3.21 2.05 0.80 0.96 3.06 6.08 14.08 15.76 88.55
Highest Precipitation (in.) 26.27 26.83 17.63 16.26 7.73 6.72 3.11 3.30 7.68 16.92 27.65 33.81 33.81
Year Highest Occurred 1990 1999 1983 1993 1984 1981 1983 1978 1997 1997 1983 1996 1996
Lowest Precipitation (in.) 0.24 2.32 1.27 2.08 0.12 0.26 0.00 0.00 0.00 0.05 2.46 4.48 0.00
Year Lowest Occurred 1985 1993 1992 1999 1992 1979 2000 1998 1993 1987 1976 1976 2000
Heating Degree Days (F) 1010. 827. 759. 577. 395. 220. 106. 91. 234. 515. 768. 991. 6493.
Cooling Degree Days (F) 0. 0. 0. 0. 1. 12. 56. 57. 14. 0. 0. 0. 140.

Western Regional Climate Center, wrcc@dri.edu