PENDLETON E OR RGNL AP, OREGON

Period of Record General Climate Summary - Heating Degree Days

Station:(356546) PENDLETON WSO AIRPORT
From Year=1928 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	997	759	629	428	233	79	9	12	107	396	720	932	5301
60	842	618	474	285	119	23	1	1	40	254	570	777	4004
57	749	533	383	206	68	8	0	0	19	178	481	685	3310
55	687	477	323	158	43	4	0	0	11	135	422	623	2881
50	535	340	184	63	8	0	0	0	2	54	282	471	1940

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