ABERDEEN, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(450008) ABERDEEN
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	769	640	628	503	380	246	162	141	201	387	589	740	5386
60	614	499	473	355	234	112	44	31	80	237	439	585	3702
57	521	414	380	269	153	50	11	6	34	155	350	492	2833
55	459	358	320	213	105	23	3	1	16	107	290	430	2325
50	306	220	176	92	24	1	0	0	1	29	153	277	1279

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