WEST LINN, OREGON

Period of Record General Climate Summary - Heating Degree Days

Station:(359208) WEST LINN
From Year=1938 To Year=1968
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	721	-99	481	428	312	138	36	27	95	289	461	717	-99
60	566	-99	326	282	160	39	5	4	24	141	311	562	-99
57	473	-99	234	198	84	12	0	0	5	69	221	469	-99
55	411	-99	177	144	52	2	0	0	1	35	166	407	-99
50	260	-99	72	37	7	0	0	0	0	5	61	256	-99

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