ANACORTES, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(450176) ANACORTES
From Year=1892 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	781	643	612	460	321	188	109	103	199	406	594	739	5155
60	626	502	457	311	173	64	19	15	74	253	444	584	3522
57	533	417	364	223	97	20	5	2	28	167	354	491	2702
55	471	361	303	167	57	8	3	1	12	116	295	429	2221
50	319	222	157	55	7	0	1	0	1	32	157	276	1227

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