DAYTON 1 WSW, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(452030) DAYTON 1 WSW
From Year=1893 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	1007	794	667	458	275	111	21	28	145	420	731	953	5609
60	852	652	512	316	154	40	3	6	62	275	581	798	4251
57	759	568	421	236	97	17	1	1	32	197	491	705	3524
55	697	511	360	188	66	8	0	0	19	151	432	643	3077
50	544	373	219	87	19	1	0	0	4	64	291	490	2092

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