COUGAR 6 E, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(451760) PETERSONS RANCH
From Year=1953 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	42	74	148	255	461	618	810	807	650	408	147	42	4462
40 S	42	117	265	519	980	1598	2408	3215	3865	4273	4420	4462	4462
45 M	6	19	58	134	309	468	655	652	500	257	54	5	3118
45 S	6	25	83	217	526	994	1649	2301	2801	3058	3113	3118	3118
50 M	0	2	16	59	180	320	500	497	352	131	12	0	2068
50 S	0	3	18	77	257	577	1077	1574	1925	2056	2068	2068	2068
55 M	0	0	2	20	92	188	347	343	214	52	1	0	1259
55 S	0	0	3	22	114	302	649	992	1206	1257	1259	1259	1259
60 M	0	0	0	4	39	96	208	203	110	14	0	0	675
60 S	0	0	0	4	44	139	348	551	660	675	675	675	675

Corn Growing Degree Days
50 M	6	24	66	126	242	344	488	487	371	189	37	4	2385
50 S	6	29	96	222	464	809	1296	1783	2154	2344	2381	2385	2385

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