LONGVIEW, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(454769) LONGVIEW
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	798	643	600	454	306	169	73	63	143	366	601	760	4975
60	643	501	445	307	172	64	13	9	49	218	451	605	3475
57	550	417	353	224	104	25	2	1	19	140	361	512	2706
55	488	360	292	172	67	10	1	0	8	97	302	450	2247
50	335	223	152	67	12	0	0	0	1	26	166	297	1279

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