SAPPHO 8 E, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(457319) SAPPHO 8 E
From Year=1936 To Year=1997
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	48	64	114	193	371	504	656	662	554	334	111	52	3663
40 S	48	111	226	419	790	1295	1951	2613	3167	3501	3612	3663	3663
45 M	9	16	35	79	222	354	501	507	404	188	32	10	2358
45 S	9	25	60	139	362	716	1217	1724	2128	2317	2349	2358	2358
50 M	1	2	6	25	107	208	346	352	256	77	4	0	1385
50 S	1	2	8	34	141	349	695	1047	1304	1381	1385	1385	1385
55 M	0	0	1	5	43	93	197	201	128	21	0	0	689
55 S	0	0	1	6	49	142	339	540	668	689	689	689	689
60 M	0	0	0	1	13	33	86	85	48	3	0	0	269
60 S	0	0	0	1	14	47	133	218	266	269	269	269	269

Corn Growing Degree Days
50 M	7	17	50	89	191	267	375	381	311	153	23	7	1873
50 S	7	24	74	164	355	622	998	1379	1690	1843	1866	1873	1873

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