COULEE DAM 1 SW, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(451767) COULEE DAM 1 SW
From Year=1948 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	1186	908	752	461	236	76	14	17	115	449	825	1109	6148
60	1031	767	597	315	122	22	2	2	47	302	675	954	4837
57	938	682	504	232	73	8	1	1	23	221	585	861	4129
55	876	626	442	182	47	3	0	0	13	172	525	799	3686
50	721	485	291	79	11	0	0	0	2	77	377	644	2686

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