POMEROY, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(456610) POMEROY
From Year=1891 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	1009	793	692	475	291	118	26	34	153	428	744	960	5722
60	854	652	537	332	167	45	5	8	70	283	595	805	4353
57	761	568	445	251	108	20	1	2	38	207	505	712	3618
55	699	511	385	202	76	11	0	1	24	161	446	650	3165
50	544	373	243	97	23	1	0	0	5	72	304	497	2161

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