EPHRATA MUNI AP, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(452614) EPHRATA AIRPORT FCWOS
From Year=1949 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	1160	868	691	427	193	50	7	9	91	425	824	1115	5859
60	1005	727	536	284	93	12	1	1	33	281	674	960	4606
57	912	642	443	205	51	3	0	0	15	202	584	867	3925
55	850	585	382	158	31	1	0	0	8	156	524	805	3500
50	695	444	234	65	5	0	0	0	1	68	377	650	2540

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