EPHRATA, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(452609) EPHRATA
From Year=1903 To Year=1971
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1184	876	663	379	160	38	4	9	88	367	776	1064	5607
60	1029	735	509	242	72	8	0	1	33	230	626	909	4394
57	936	650	417	170	38	2	0	0	16	160	536	816	3741
55	874	594	357	128	23	1	0	0	9	120	477	754	3335
50	719	453	216	49	4	0	0	0	2	48	329	599	2419

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