WAUNA 3 W, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(459021) WAUNA 3 SW MINTER CREEK
From Year=1938 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	772	633	630	494	354	175	110	78	206	438	669	768	5326
60	617	491	475	345	209	65	28	11	79	285	519	613	3735
57	524	407	382	259	132	26	8	1	29	196	429	520	2913
55	462	350	322	205	88	12	3	0	10	141	370	458	2419
50	307	211	180	92	18	0	0	0	0	40	228	305	1382

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