TROUTDALE SUBSTATION, OREGON

Period of Record General Climate Summary - Cooling Degree Days

Station:(358634) TROUTDALE SUBSTATION
From Year=1948 To Year=2012
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 4 28 111 234 393 391 242 60 3 0 1468
57 0 0 1 17 79 181 332 330 188 37 1 0 1166
60 0 0 0 6 44 116 241 239 118 15 0 0 779
65 0 0 0 1 13 46 115 111 42 2 0 0 330
70 0 0 0 0 2 13 39 36 9 0 0 0 100
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