LAKE KACHESS, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(454406) LAKE KACHESS
From Year=1908 To Year=1977
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1203	980	917	691	488	273	114	115	285	593	892	1109	7661
60	1048	839	762	542	338	152	42	45	163	439	742	954	6067
57	955	754	669	452	254	95	18	21	106	348	652	861	5186
55	893	698	607	394	202	65	9	11	75	290	592	799	4634
50	738	557	452	252	96	17	1	1	23	159	442	644	3381

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