WILLAPA HARBOR, WASHINGTON

Period of Record General Climate Summary - Cooling Degree Days

Station:(459291) WILLAPA HARBOR
From Year=1895 To Year=1979
Cooling Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
55 0 0 3 13 45 101 206 220 141 43 2 0 775
57 0 0 1 7 28 65 149 161 96 24 1 0 532
60 0 0 0 3 13 31 79 85 47 8 0 0 266
65 0 0 0 0 3 8 23 21 10 1 0 0 65
70 0 0 0 0 0 2 6 5 1 0 0 0 13
Cooling Degree Day units are computed as the difference between the daily average temperature and the base temperature. (Daily Ave. Temp. - Base Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is above the base temperature. Negative numbers are discarded. Example: If the days high temperature was 95 and the low temperature was 51, the base 60 heating degree day units is ((95 + 51) / 2) - 60 = 13. This is done for each day of the month and summed.
Table updated on Oct 31, 2012
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered

Western Regional Climate Center, wrcc@dri.edu