NEWHALEM, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(455840) NEWHALEM
From Year=1959 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	922	753	702	508	331	182	83	73	180	458	717	899	5810
60	767	611	547	361	199	83	25	19	82	307	567	744	4312
57	674	527	454	276	132	41	9	5	41	222	477	651	3510
55	612	470	393	224	94	21	3	2	23	170	417	589	3019
50	457	329	243	109	28	1	0	0	3	68	269	434	1941

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