ELMA, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(452531) ELMA
From Year=1948 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	79	102	172	283	467	593	732	749	606	384	162	82	4411
40 S	79	181	353	636	1104	1696	2429	3177	3783	4167	4329	4411	4411
45 M	21	30	63	147	313	443	577	594	456	235	64	22	2964
45 S	21	51	114	261	575	1017	1595	2188	2644	2879	2942	2964	2964
50 M	2	4	13	57	174	293	422	439	307	108	14	2	1836
50 S	2	6	19	77	250	543	966	1405	1711	1820	1833	1836	1836
55 M	0	0	1	16	75	154	269	285	166	34	1	0	1001
55 S	0	0	1	18	92	246	515	800	966	1000	1001	1001	1001
60 M	0	0	0	3	25	60	130	142	62	6	0	0	427
60 S	0	0	0	3	27	87	218	360	422	427	427	427	427

Corn Growing Degree Days
50 M	15	39	88	161	270	341	439	456	367	210	54	14	2456
50 S	15	53	141	303	573	914	1354	1810	2177	2387	2442	2456	2456

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