SEQUIM 2 E, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(457544) SEQUIM 2 E
From Year=1980 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	802	710	679	553	402	258	169	161	295	516	678	819	6042
60	647	569	524	403	250	124	52	45	153	361	528	664	4320
57	554	484	431	314	166	59	17	13	83	269	438	571	3400
55	492	428	369	254	117	29	6	4	48	211	378	509	2847
50	338	288	218	120	31	2	0	0	6	86	232	355	1676

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