ELECTRON HEADWORKS, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(452493) ELECTRON HEADWORKS
From Year=1948 To Year=1980
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	977	783	802	632	456	287	172	191	314	566	775	903	6859
60	822	641	647	482	306	156	64	74	176	412	625	748	5152
57	729	557	554	393	221	93	25	29	106	320	535	655	4216
55	667	500	492	334	170	59	10	12	69	261	475	593	3642
50	512	360	338	194	69	10	1	1	16	131	327	439	2397

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 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