CENTRALIA, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(451276) CENTRALIA
From Year=1893 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	790	639	598	442	291	152	61	59	156	383	598	757	4926
60	635	497	443	296	157	52	9	9	56	233	448	602	3438
57	542	413	351	213	92	19	2	1	23	153	359	509	2676
55	480	357	291	162	57	8	0	0	11	108	300	448	2221
50	328	221	151	60	10	0	0	0	1	33	165	296	1265

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