WAPATO, WASHINGTON

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Monthly
Mean Max. Temperature (F) 37.9 46.1 56.7 65.2 74.2 81.2 88.5 87.9 78.9 65.8 48.6 37.9 64.1
Highest Mean Max. Temperature (F) 46.4 53.9 62.5 72.8 78.9 87.0 96.6 92.6 85.5 73.2 55.5 45.5 96.6
Year Highest Occurred 1999 1991 1992 1977 1992 1977 1985 1971 1998 1988 1990 1999 1985
Lowest Mean Max. Temperature (F) 23.1 35.6 49.9 60.1 68.5 74.9 79.6 82.7 72.9 62.1 37.4 26.3 23.1
Year Lowest Occurred 1979 1989 1993 1982 1996 1991 1993 1995 1986 1975 1985 1985 1979
Mean Temperature (F) 30.3 36.6 44.9 52.2 60.4 67.2 73.5 72.6 63.5 51.4 39.2 30.4 51.9
Highest Mean Temperature (F) 37.5 42.1 49.7 58.2 64.5 72.9 79.5 78.2 68.9 57.9 45.3 37.2 79.5
Year Highest Occurred 1990 1991 1992 1977 1972 1992 1985 1977 1990 1988 1999 1999 1985
Lowest Mean Temperature (F) 15.2 26.2 40.4 46.9 54.9 63.0 66.3 67.8 58.9 48.0 28.0 20.7 15.2
Year Lowest Occurred 1979 1989 1993 1982 1984 1991 1993 1995 1983 1982 1985 1985 1979
Mean Min. Temperature (F) 22.6 27.1 33.1 39.2 46.6 53.2 58.5 57.3 48.0 37.0 29.7 22.9 39.6
Highest Mean Min. Temperature (F) 32.2 31.7 37.0 43.5 51.5 58.9 63.7 64.0 52.6 42.6 35.5 29.7 64.0
Year Highest Occurred 1981 1992 1992 1977 1972 1992 1998 1977 1990 1988 1999 1973 1977
Lowest Mean Min. Temperature (F) 7.2 16.8 29.3 33.6 40.5 48.9 53.0 51.7 42.2 33.1 18.5 12.7 7.2
Year Lowest Occurred 1979 1989 1971 1982 1984 1984 1993 1984 1983 1982 1985 1984 1979
Mean Precipitation (in.) 1.16 0.71 0.70 0.55 0.57 0.58 0.32 0.35 0.40 0.54 1.05 1.25 8.18
Highest Precipitation (in.) 3.22 1.78 2.24 2.19 1.45 3.25 1.65 1.77 1.61 1.52 3.06 3.88 3.88
Year Highest Occurred 1995 1983 1983 1995 1990 1991 1992 1975 1986 1994 1983 1996 1996
Lowest Precipitation (in.) 0.06 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.06 0.00
Year Lowest Occurred 1984 1988 1973 1981 1979 1999 1988 2000 1990 1978 1976 1976 1988
Heating Degree Days (F) 1077. 795. 624. 387. 179. 63. 17. 13. 127. 422. 776. 1073. 5553.
Cooling Degree Days (F) 0. 0. 0. 3. 37. 129. 281. 248. 80. 1. 0. 0. 779.

Western Regional Climate Center, wrcc@dri.edu