ELWHA RANGER STN, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(452548) ELWHA RANGER STN
From Year=1948 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	901	745	707	537	381	239	131	110	215	495	720	858	6039
60	746	604	552	387	234	114	38	26	92	340	570	703	4405
57	653	519	459	298	155	56	11	6	43	249	480	610	3540
55	591	463	397	241	108	29	4	2	22	192	420	548	3016
50	437	322	243	110	28	2	0	0	2	74	272	393	1883

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