BEAVERTON 2 SSW, OREGON

Period of Record General Climate Summary - Heating Degree Days

Station:(350595) BEAVERTON 2 SSW
From Year=1972 To Year=2007
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	765	617	560	422	281	137	47	46	118	360	592	768	4712
60	610	476	405	278	156	47	7	6	39	216	442	613	3294
57	517	392	313	199	94	16	1	1	15	140	353	520	2559
55	455	336	253	151	59	6	0	0	6	98	294	458	2117
50	303	202	122	54	10	0	0	0	0	28	161	306	1186

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