BELLINGHAM INTL AP, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(450574) BELLINGHAM FCWOS AP
From Year=1949 To Year=2012
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	63	77	132	247	426	556	689	692	528	317	137	73	3935
40 S	63	140	272	519	944	1501	2190	2882	3409	3726	3862	3935	3935
45 M	17	20	38	110	271	406	534	537	378	172	51	20	2555
45 S	17	37	75	185	456	862	1396	1933	2311	2483	2535	2555	2555
50 M	2	3	5	30	128	257	379	382	230	64	11	2	1493
50 S	2	5	10	40	168	425	804	1186	1416	1480	1491	1493	1493
55 M	0	0	0	4	38	116	225	227	98	12	1	0	722
55 S	0	0	0	5	43	159	384	611	709	721	722	722	722
60 M	0	0	0	0	7	30	88	88	22	1	0	0	237
60 S	0	0	0	0	7	38	126	214	236	237	237	237	237

Corn Growing Degree Days
50 M	12	21	43	101	194	277	386	391	276	135	34	12	1882
50 S	12	33	75	176	370	647	1033	1424	1700	1835	1869	1882	1882

M = Monthly Data
S - Running sum of monthly data.
Growing Degree Day units are computed as the difference between the daily average temperature and the base temperature. (Daily Ave. Temp. - Base Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is above the base temperature. Negative numbers are discarded. Example: If the days high temperature was 95 and the low temperature was 51, the base 60 heating degree day units is ((95 + 51) / 2) - 60 = 13. This is done for each day of the month and summed.
Corn Growing Degree Day units have the limitations that the maximum daily temperatures greater than 86 F are set to 86 F and minimums less than 50 F are set to 50 F.
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