WHITE RIVER RS, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(459171) PARKWAY 6 S
From Year=1966 To Year=1975
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1192	937	982	847	578	358	181	192	377	691	936	1145	8416
60	1037	795	827	697	426	229	86	93	246	537	786	990	6750
57	944	710	734	607	338	164	49	55	180	448	696	897	5823
55	882	654	672	547	281	127	31	37	142	391	636	835	5234
50	727	512	517	397	152	51	7	8	66	254	486	680	3858

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