MUD MTN DAM, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(455704) MUD MOUNTAIN DAM
From Year=1939 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	49	61	96	179	352	480	660	667	522	308	119	52	3544
40 S	49	110	205	384	736	1216	1875	2543	3065	3373	3492	3544	3544
45 M	12	18	32	80	209	330	505	512	373	171	44	12	2297
45 S	12	30	62	142	351	682	1186	1698	2071	2242	2285	2297	2297
50 M	1	4	7	29	103	190	350	357	229	73	10	1	1356
50 S	1	5	12	42	145	335	685	1042	1271	1345	1355	1356	1356
55 M	0	0	1	8	43	88	204	207	114	23	1	0	689
55 S	0	0	1	9	52	140	344	552	665	688	689	689	689
60 M	0	0	0	1	15	34	94	92	44	5	0	0	285
60 S	0	0	0	1	16	50	144	236	280	285	285	285	285

Corn Growing Degree Days
50 M	14	22	42	83	169	237	368	374	278	140	40	13	1779
50 S	14	36	77	160	329	566	934	1308	1586	1726	1766	1779	1779

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