GRAPEVIEW 3 SW, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(453284) GRAPEVIEW 3 SW
From Year=1907 To Year=1995
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 794 652 616 453 292 150 62 52 160 396 601 748 4976
60 639 511 461 305 153 47 7 5 54 243 451 593 3468
57 546 426 368 219 86 15 1 0 20 160 361 500 2702
55 484 370 307 166 51 5 0 0 9 112 301 438 2242
50 329 231 160 59 6 0 0 0 1 32 161 285 1265
Heating Degree Day units are computed as the difference between the base temperature and the daily average temperature. (Base Temp. - Daily Ave. Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is below the base temperature. Negative numbers are discarded. Example: If the days high temperature was 65 and the low temperature was 31, the base 50 heating degree day units is 50 - ((65 + 31) / 2) = 2. 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