SUNNYSIDE, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(458207) SUNNYSIDE
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	24	55	191	375	637	819	1014	972	709	384	100	23	5303
40 S	24	79	270	645	1282	2100	3115	4087	4796	5180	5280	5303	5303
45 M	6	15	82	232	482	669	859	817	559	238	35	6	3999
45 S	6	21	103	335	816	1485	2344	3161	3721	3959	3994	3999	3999
50 M	1	3	24	117	331	519	704	662	411	119	9	1	2900
50 S	1	4	28	145	476	995	1699	2361	2772	2890	2899	2900	2900
55 M	0	0	5	47	197	370	549	507	268	46	2	0	1991
55 S	0	0	5	52	250	619	1169	1676	1944	1990	1991	1991	1991
60 M	0	0	0	14	98	231	396	353	146	12	0	0	1251
60 S	0	0	0	15	113	344	740	1093	1239	1251	1251	1251	1251

Corn Growing Degree Days
50 M	14	42	135	248	398	512	626	601	454	269	62	14	3375
50 S	14	57	191	439	837	1349	1974	2576	3030	3299	3361	3375	3375

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