TILLAMOOK 1 W, OREGON

Period of Record General Climate Summary - Heating Degree Days

Station:(358494) TILLAMOOK 1 W
From Year=1948 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	688	575	602	510	402	274	206	186	231	390	540	665	5269
60	533	434	447	361	251	132	73	59	101	240	390	510	3530
57	440	349	354	272	166	65	26	20	47	157	301	417	2613
55	378	294	293	215	115	34	10	7	24	110	243	355	2078
50	232	164	150	89	28	3	0	0	3	31	119	209	1027

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