SILVERTON, OREGON

Period of Record General Climate Summary - Heating Degree Days

Station:(357823) SILVERTON
From Year=1962 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	777	619	572	452	296	149	49	41	119	357	591	779	4800
60	622	478	418	306	165	55	7	5	39	213	441	624	3371
57	529	393	325	224	101	21	1	0	14	139	352	531	2629
55	467	337	265	172	65	9	0	0	6	97	293	469	2181
50	317	203	132	67	13	0	0	0	0	29	161	318	1240

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