PRIEST RAPIDS DAM, WASHINGTON

Period of Record General Climate Summary - Cooling Degree Days

Station:(456747) PRIEST RAPIDS DAM
From Year=1956 To Year=2006
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 6 66 263 474 712 690 398 86 3 0 2697
57 0 0 2 42 210 415 650 628 340 59 1 0 2347
60 0 0 0 19 142 327 557 535 257 30 0 0 1867
65 0 0 0 4 60 195 404 381 138 7 0 0 1190
70 0 0 0 1 19 96 258 238 56 0 0 0 668
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 Jul 28, 2006
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