ENTIAT FISH HATCHERY, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(452563) ENTIAT FISH HATCHERY
From Year=1989 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	1137	877	714	475	277	125	26	27	112	473	835	1135	6214
60	982	736	559	329	152	45	5	5	42	323	685	980	4843
57	889	651	466	246	93	20	2	1	18	238	595	887	4107
55	827	595	405	195	61	10	1	1	8	187	535	825	3650
50	672	453	256	89	15	1	0	0	1	84	386	670	2628

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