CONCRETE PPL FISH STN, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(451679) CONCRETE PPL FISH STN
From Year=1905 To Year=2012
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	887	706	648	458	295	166	72	61	164	404	659	836	5356
60	732	565	493	312	161	62	13	10	63	255	509	681	3857
57	639	480	401	229	96	25	3	2	27	174	420	588	3082
55	577	424	340	178	61	11	1	0	12	127	360	526	2616
50	422	283	194	73	12	1	0	0	1	41	216	372	1615

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