COULEE DAM 1 SW, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(451767) COULEE DAM 1 SW
From Year=1934 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	1182	913	741	452	228	75	12	15	106	434	825	1101	6082
60	1027	771	586	307	116	21	2	2	43	288	675	946	4783
57	934	687	493	226	69	7	0	0	21	210	585	853	4084
55	872	630	432	177	44	3	0	0	11	162	525	791	3647
50	717	489	282	78	10	0	0	0	2	71	377	636	2661

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