STEHEKIN 4 NW, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(458059) STEHEKIN 3 NW
From Year=1906 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	1146	930	823	537	309	134	36	48	210	555	865	1093	6687
60	991	789	668	388	173	48	6	10	101	402	715	938	5230
57	898	704	575	301	107	20	1	3	55	312	625	845	4447
55	836	648	513	245	72	9	0	1	33	255	566	783	3963
50	681	507	359	124	19	1	0	0	7	130	416	628	2872

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