ROSS DAM, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(457185) ROSS DAM
From Year=1960 To Year=2006
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	986	810	765	558	361	189	82	66	189	479	762	952	6200
60	831	669	610	409	224	90	26	18	88	327	612	797	4701
57	738	584	517	321	152	47	10	5	47	241	522	704	3889
55	676	528	455	265	112	26	4	2	27	189	462	642	3387
50	521	387	301	139	38	2	0	0	4	81	313	487	2273

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 Jul 28, 2006
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