CONCRETE PPL FISH STN, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(451679) CONCRETE PPL FISH STN
From Year=1931 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	867	700	646	456	290	162	73	60	160	394	651	828	5287
60	712	559	491	310	158	61	14	9	61	247	501	673	3796
57	619	474	399	227	94	24	3	2	25	167	411	580	3026
55	557	418	338	177	60	11	1	0	12	121	352	518	2564
50	402	277	192	73	12	1	0	0	1	40	208	363	1569

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