MERWIN DAM, WASHINGTON

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Monthly
Mean Max. Temperature (F)
Highest Mean Max. Temperature (F)
Year Highest Occurred
Lowest Mean Max. Temperature (F)
Year Lowest Occurred
Mean Temperature (F)
Highest Mean Temperature (F)
Year Highest Occurred
Lowest Mean Temperature (F)
Year Lowest Occurred
Mean Min. Temperature (F)
Highest Mean Min. Temperature (F)
Year Highest Occurred
Lowest Mean Min. Temperature (F)
Year Lowest Occurred
Mean Precipitation (in.) 10.25 8.52 7.58 5.70 4.11 3.18 1.29 1.77 3.29 5.61 11.28 11.57 74.15
Highest Precipitation (in.) 19.18 15.74 12.56 11.72 6.96 7.26 4.91 5.75 7.30 11.98 22.04 21.74 22.04
Year Highest Occurred 1971 1999 1997 1993 1998 1981 1983 1976 1977 1990 1973 1971 1973
Lowest Precipitation (in.) 0.38 0.83 2.46 1.87 0.40 0.79 0.00 0.01 0.07 0.11 2.42 3.12 0.00
Year Lowest Occurred 1985 1993 1992 1999 1992 1992 1984 1998 1993 1987 1976 1985 1984
Heating Degree Days (F)
Cooling Degree Days (F)

Western Regional Climate Center, wrcc@dri.edu