EVERETT, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(452675) EVERETT JR COLLEGE
From Year=1894 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	802	661	626	473	329	180	94	93	211	426	623	774	5293
60	647	520	471	324	183	63	15	15	87	274	473	619	3691
57	554	435	378	237	108	21	2	2	39	188	383	526	2875
55	492	379	317	182	67	8	0	0	20	137	324	465	2391
50	339	241	172	68	11	0	0	0	2	46	185	312	1376

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