CENTRALIA, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(451276) CENTRALIA
From Year=1931 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	774	630	593	432	276	143	55	53	141	377	598	745	4818
60	619	489	438	285	145	47	8	7	47	228	448	590	3350
57	526	404	345	203	83	16	1	1	18	149	358	497	2602
55	465	348	285	153	50	6	0	0	8	105	300	435	2155
50	313	213	146	54	8	0	0	0	1	32	164	284	1214

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