LAKE CLE ELUM, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(454394) LAKE CLE ELUM
From Year=1948 To Year=1977
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1211	951	940	697	469	257	119	125	277	618	889	1092	7644
60	1056	810	785	547	322	141	47	47	157	463	739	937	6051
57	963	725	692	458	241	87	21	21	101	372	649	844	5172
55	901	669	630	398	192	59	11	10	70	312	589	782	4622
50	746	528	475	254	92	13	1	0	22	177	439	627	3373

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