ANACORTES, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(450176) ANACORTES
From Year=1931 To Year=2006
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	87	102	176	295	462	577	689	691	558	374	175	97	4282
40 S	87	189	364	660	1121	1698	2387	3078	3636	4010	4185	4282	4282
45 M	23	27	60	151	307	427	534	536	408	223	67	26	2788
45 S	23	50	110	261	568	994	1528	2064	2473	2695	2762	2788	2788
50 M	3	3	10	47	158	277	379	381	259	94	13	3	1625
50 S	3	6	16	62	221	497	876	1257	1516	1610	1623	1625	1625
55 M	0	0	1	8	50	132	224	226	119	21	1	0	782
55 S	0	0	1	8	59	191	415	641	760	781	782	782	782
60 M	0	0	0	1	9	34	84	84	28	2	0	0	242
60 S	0	0	0	1	9	44	127	211	240	242	242	242	242

Corn Growing Degree Days
50 M	12	23	52	117	215	293	385	387	283	149	39	12	1968
50 S	12	35	87	204	419	712	1097	1484	1767	1917	1956	1968	1968

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 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