STEHEKIN 4 NW, WASHINGTON

Period of Record General Climate Summary - Cooling Degree Days

Station:(458059) STEHEKIN 3 NW
From Year=1906 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 0 9 80 209 406 375 139 10 0 0 1227
57 0 0 0 4 52 160 345 315 100 5 0 0 981
60 0 0 0 1 26 98 257 229 56 2 0 0 669
65 0 0 0 0 6 34 132 112 16 0 0 0 299
70 0 0 0 0 1 8 50 39 3 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