OLGA 2 SE, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(456096) OLGA 2 SE
From Year=1891 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	795	663	639	491	363	237	165	161	250	440	616	747	5569
60	640	521	484	342	211	98	41	39	111	286	466	592	3831
57	547	437	391	253	126	36	7	7	48	196	377	499	2923
55	485	380	329	195	77	13	1	1	21	140	317	437	2399
50	331	241	180	72	11	0	0	0	1	39	174	284	1333

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