THE DALLES MUNI AP, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(451968) DALLESPORT FCWOS AP
From Year=1948 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	936	706	589	372	173	50	5	5	62	343	670	897	4808
60	781	565	434	231	74	10	0	0	17	204	521	742	3578
57	688	480	341	155	36	2	0	0	7	134	431	649	2923
55	626	424	281	111	19	1	0	0	3	95	372	587	2519
50	473	286	144	33	2	0	0	0	0	31	232	433	1635

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