SUNNYSIDE, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(458207) SUNNYSIDE
From Year=1894 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	21	45	178	367	618	797	1003	951	681	376	92	25	5152
40 S	21	66	244	611	1229	2025	3028	3978	4659	5035	5127	5152	5152
45 M	5	12	76	226	463	647	848	796	531	232	32	7	3873
45 S	5	17	92	319	781	1428	2276	3071	3602	3834	3866	3873	3873
50 M	1	2	22	113	312	497	693	641	382	115	8	2	2787
50 S	1	3	25	139	451	948	1640	2281	2663	2778	2786	2787	2787
55 M	0	0	4	45	181	348	538	486	241	42	1	0	1887
55 S	0	0	5	49	230	579	1117	1602	1843	1885	1886	1887	1887
60 M	0	0	0	13	87	211	384	332	124	11	0	0	1162
60 S	0	0	0	13	100	311	695	1027	1151	1162	1162	1162	1162

Corn Growing Degree Days
50 M	13	35	136	255	396	502	617	588	443	265	60	14	3322
50 S	13	48	184	439	834	1336	1953	2541	2984	3248	3309	3322	3322

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