ELWHA RS, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(452548) ELWHA RANGER STN
From Year=1942 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	20	32	89	210	396	514	677	693	539	282	80	28	3559
40 S	20	52	141	351	747	1260	1937	2630	3169	3452	3532	3559	3559
45 M	2	4	18	85	243	364	522	538	389	140	20	3	2329
45 S	2	6	23	109	352	716	1238	1776	2165	2305	2326	2329	2329
50 M	0	0	2	23	114	216	367	383	242	45	2	0	1393
50 S	0	0	2	24	139	355	721	1104	1346	1391	1393	1393	1393
55 M	0	0	0	4	39	94	215	231	112	7	0	0	702
55 S	0	0	0	4	43	137	352	583	695	702	702	702	702
60 M	0	0	0	0	9	32	93	100	32	0	0	0	267
60 S	0	0	0	0	9	41	134	234	267	267	267	267	267

Corn Growing Degree Days
50 M	2	8	38	106	213	276	391	401	290	115	16	4	1859
50 S	2	10	48	154	367	643	1034	1435	1725	1840	1856	1859	1859

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