WALLA WALLA 13 ESE, OREGON

Period of Record General Climate Summary - Heating Degree Days

Station:(358985) WALLA WALLA 13 ESE
From Year=1948 To Year=1990
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1119	873	795	561	377	187	63	78	243	550	852	1049	6747
60	964	732	640	412	235	84	15	19	125	395	702	894	5216
57	871	647	547	325	161	43	4	6	73	305	612	801	4395
55	809	591	485	269	119	24	2	2	48	248	552	739	3887
50	654	450	332	145	43	3	0	0	14	126	402	584	2753

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