EPHRATA AIRPORT FCWOS, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(452614) EPHRATA AIRPORT FCWOS
From Year=1949 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	6	22	128	332	625	836	1088	1043	743	362	57	6	5249
40 S	6	28	156	488	1114	1950	3038	4081	4824	5186	5243	5249	5249
45 M	1	4	44	195	471	686	933	888	593	223	15	1	4054
45 S	1	5	49	244	715	1401	2334	3222	3815	4038	4053	4054	4054
50 M	0	0	9	93	321	536	778	733	444	114	2	0	3030
50 S	0	0	9	102	423	959	1737	2470	2913	3027	3030	3030	3030
55 M	0	0	1	34	190	387	623	578	301	45	0	0	2160
55 S	0	0	1	35	225	612	1235	1813	2114	2160	2160	2160	2160
60 M	0	0	0	10	96	247	469	424	177	14	0	0	1436
60 S	0	0	0	10	105	353	821	1245	1423	1436	1436	1436	1436

Corn Growing Degree Days
50 M	2	11	75	198	374	526	702	673	461	208	23	2	3255
50 S	2	13	88	286	661	1186	1888	2561	3022	3230	3253	3255	3255

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