ELWHA RS, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(452548) ELWHA RANGER STN
From Year=1942 To Year=2012
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 904 743 709 542 381 245 130 112 216 494 720 860 6057
60 749 602 554 393 234 118 37 27 93 340 570 705 4421
57 656 517 461 304 155 59 11 7 44 249 480 612 3554
55 594 461 399 246 109 31 4 2 22 191 420 550 3029
50 439 319 246 115 29 2 0 0 2 74 272 395 1894
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