ELLENSBURG FAA AIRPORT, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(452508) ELLENSBURG FAA AIRPORT
From Year=1940 To Year=1959
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	1	7	53	227	500	642	900	853	598	268	28	2	4078
40 S	1	8	61	288	787	1429	2329	3182	3780	4048	4076	4078	4078
45 M	0	1	14	109	347	492	745	698	448	145	4	0	3002
45 S	0	1	15	124	470	962	1707	2405	2853	2998	3002	3002	3002
50 M	0	0	3	37	209	342	590	543	302	63	1	0	2090
50 S	0	0	3	40	249	592	1181	1724	2026	2089	2090	2090	2090
55 M	0	0	0	9	103	203	435	389	175	20	0	0	1333
55 S	0	0	0	9	112	315	750	1138	1313	1333	1333	1333	1333
60 M	0	0	0	1	37	96	285	239	78	5	0	0	741
60 S	0	0	0	1	38	134	420	658	737	741	741	741	741

Corn Growing Degree Days
50 M	1	4	43	161	306	380	563	535	376	175	15	1	2559
50 S	1	5	48	209	515	895	1458	1993	2368	2543	2558	2559	2559

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