ELLENSBURG, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(452505) ELLENSBURG
From Year=1901 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	2	10	86	242	481	664	885	850	566	262	34	3	4083
40 S	2	12	99	341	822	1485	2370	3219	3785	4046	4080	4083	4083
45 M	0	1	25	123	329	514	730	695	417	136	7	0	2976
45 S	0	1	26	149	478	992	1722	2416	2833	2969	2976	2976	2976
50 M	0	0	5	49	193	365	575	540	273	54	1	0	2053
50 S	0	0	5	53	246	611	1186	1725	1998	2052	2053	2053	2053
55 M	0	0	0	14	92	226	421	386	149	14	0	0	1303
55 S	0	0	0	15	107	333	753	1139	1288	1303	1303	1303	1303
60 M	0	0	0	3	34	115	273	240	63	2	0	0	730
60 S	0	0	0	3	37	152	425	665	728	730	730	730	730

Corn Growing Degree Days
50 M	1	8	76	178	303	402	549	532	375	195	21	1	2640
50 S	1	9	85	263	566	968	1517	2049	2423	2618	2639	2640	2640

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