OMAK 2 NW, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(456123) OMAK 2 NW
From Year=1931 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	1275	986	771	456	230	75	16	25	158	512	893	1160	6558
60	1120	845	616	311	117	21	3	4	69	362	743	1005	5216
57	1027	760	523	229	68	8	1	1	36	277	653	912	4496
55	965	704	462	180	44	3	0	0	22	225	593	850	4048
50	810	563	312	80	10	0	0	0	5	116	443	695	3034

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