YAKIMA AIR TERMINAL, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(459465) YAKIMA WSO AP
From Year=1946 To Year=2012
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1106	822	693	474	252	92	23	29	149	483	813	1079	6016
60	951	681	538	328	136	31	4	4	64	332	663	924	4656
57	858	596	445	245	83	12	1	1	32	247	573	831	3925
55	796	540	384	194	55	5	0	0	18	195	514	769	3470
50	642	399	236	87	13	0	0	0	3	89	366	614	2450

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