DARRINGTON RANGER STN, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(451992) DARRINGTON RANGER STN
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	19	40	113	240	454	576	740	742	551	310	78	22	3886
40 S	19	59	172	412	866	1442	2183	2925	3476	3786	3863	3886	3886
45 M	3	8	38	119	302	426	585	587	402	171	20	4	2665
45 S	3	10	49	168	470	896	1482	2069	2471	2642	2661	2665	2665
50 M	0	1	9	46	169	279	430	432	257	70	3	0	1697
50 S	0	1	11	57	226	505	935	1368	1624	1694	1697	1697	1697
55 M	0	0	2	13	77	149	278	280	131	19	0	0	951
55 S	0	0	2	16	93	242	520	800	931	950	951	951	951
60 M	0	0	0	3	29	63	146	144	49	3	0	0	437
60 S	0	0	0	3	32	95	241	385	434	437	437	437	437

Corn Growing Degree Days
50 M	6	24	70	143	260	320	446	447	324	168	26	5	2238
50 S	6	30	100	242	502	823	1268	1716	2040	2207	2233	2238	2238

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