BELLINGHAM INTL AP, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(450574) BELLINGHAM FCWOS AP
From Year=1949 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	849	683	665	503	350	199	105	100	225	460	653	808	5602
60	694	542	510	353	202	74	19	16	95	306	504	653	3968
57	601	457	417	265	122	26	3	2	42	217	414	560	3126
55	539	401	355	208	77	10	1	0	21	162	354	498	2627
50	387	262	205	83	13	0	0	0	3	59	214	345	1571

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