MUD MOUNTAIN DAM, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(455704) MUD MOUNTAIN DAM
From Year=1939 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	50	62	97	183	356	482	659	665	517	308	116	53	3547
40 S	50	112	209	392	748	1230	1888	2553	3070	3378	3494	3547	3547
45 M	12	19	33	83	212	332	504	510	367	170	41	12	2297
45 S	12	32	65	147	360	692	1196	1705	2073	2243	2285	2297	2297
50 M	2	4	7	31	105	192	349	355	224	73	9	1	1352
50 S	2	5	13	43	148	340	690	1044	1269	1342	1351	1352	1352
55 M	0	0	1	9	44	89	203	205	109	23	1	0	684
55 S	0	0	1	10	53	143	346	551	660	683	684	684	684
60 M	0	0	0	1	15	34	94	90	41	5	0	0	281
60 S	0	0	0	2	16	51	145	235	276	281	281	281	281

Corn Growing Degree Days
50 M	14	23	43	85	171	239	367	372	274	141	39	14	1780
50 S	14	37	80	165	336	575	942	1314	1587	1728	1767	1780	1780

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