HUMPTULIPS SALMON HTCH, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(453826) HUMPTULIPS SALMON HATCH
From Year=1987 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	82	84	124	226	381	486	629	642	523	314	132	59	3680
40 S	82	166	290	516	897	1383	2011	2653	3176	3490	3621	3680	3680
45 M	19	20	36	101	230	336	474	487	373	170	42	12	2298
45 S	19	39	75	176	405	741	1214	1701	2074	2244	2286	2298	2298
50 M	1	2	5	30	107	188	319	332	225	63	8	1	1281
50 S	1	3	8	39	145	333	652	984	1210	1272	1280	1281	1281
55 M	0	0	0	6	37	72	167	178	99	14	0	0	575
55 S	0	0	0	7	44	116	283	461	560	574	575	575	575
60 M	0	0	0	1	10	22	54	57	26	1	0	0	171
60 S	0	0	0	1	11	33	87	144	170	171	171	171	171

Corn Growing Degree Days
50 M	13	32	58	115	201	246	349	365	305	160	40	9	1894
50 S	13	45	103	218	419	666	1015	1380	1685	1846	1885	1894	1894

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