ELLENSBURG BOWERS FLD, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(452508) ELLENSBURG FAA AIRPORT
From Year=1940 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	2	8	55	232	497	643	903	866	611	272	28	2	4119
40 S	2	10	66	297	794	1436	2339	3206	3816	4089	4117	4119	4119
45 M	0	1	14	113	343	493	748	711	461	149	4	0	3037
45 S	0	1	16	128	472	964	1712	2423	2884	3033	3037	3037	3037
50 M	0	0	3	40	206	343	593	556	314	64	1	0	2119
50 S	0	0	3	43	248	591	1184	1740	2055	2119	2119	2119	2119
55 M	0	0	0	11	100	203	439	402	185	20	0	0	1359
55 S	0	0	0	11	111	314	752	1154	1339	1359	1359	1359	1359
60 M	0	0	0	2	36	96	288	252	85	5	0	0	763
60 S	0	0	0	2	37	133	421	673	758	763	763	763	763

Corn Growing Degree Days
50 M	1	5	44	164	303	380	564	543	384	177	16	1	2582
50 S	1	6	50	213	517	897	1461	2004	2389	2566	2581	2582	2582

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