ELTOPIA 8 WSW, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(452542) ELTOPIA 8 WSW
From Year=1974 To Year=2006
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1013	773	611	413	229	79	17	16	115	416	756	1013	5451
60	858	632	456	268	113	21	2	2	41	269	606	858	4127
57	765	547	364	189	62	6	0	0	18	191	517	765	3425
55	703	491	303	142	38	2	0	0	9	145	458	703	2996
50	549	353	165	54	7	0	0	0	1	59	316	550	2053

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