ELLENSBURG, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(452505) ELLENSBURG
From Year=1893 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	3	10	83	238	478	661	884	849	563	258	35	3	4065
40 S	3	12	95	334	812	1472	2357	3206	3770	4027	4062	4065	4065
45 M	0	1	24	121	326	511	729	694	414	133	7	0	2961
45 S	0	1	25	146	472	983	1712	2406	2821	2954	2961	2961	2961
50 M	0	0	5	48	190	362	574	539	271	52	1	0	2041
50 S	0	0	5	52	242	604	1179	1718	1989	2040	2041	2041	2041
55 M	0	0	0	14	90	223	421	386	148	14	0	0	1295
55 S	0	0	0	14	105	327	748	1134	1281	1295	1295	1295	1295
60 M	0	0	0	3	33	112	273	240	63	2	0	0	726
60 S	0	0	0	3	36	148	421	662	724	726	726	726	726

Corn Growing Degree Days
50 M	1	8	73	175	300	400	550	532	371	191	21	1	2623
50 S	1	9	82	257	557	957	1507	2039	2409	2600	2621	2623	2623

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