CLATSKANIE, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(351643) CLATSKANIE
From Year=1935 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	61	89	166	269	445	565	719	732	606	378	146	67	4242
40 S	61	150	315	584	1029	1594	2312	3045	3651	4029	4175	4242	4242
45 M	13	24	59	134	291	415	564	577	456	229	53	16	2831
45 S	13	37	96	231	522	936	1500	2077	2533	2763	2815	2831	2831
50 M	1	3	13	49	152	265	409	422	307	103	9	1	1733
50 S	1	4	17	65	217	482	891	1313	1620	1723	1732	1733	1733
55 M	0	0	1	12	58	129	254	267	165	29	1	0	917
55 S	0	0	1	13	72	200	455	722	887	916	917	917	917
60 M	0	0	0	2	17	44	115	123	59	4	0	0	363
60 S	0	0	0	2	19	63	178	300	360	363	363	363	363

Corn Growing Degree Days
50 M	9	29	72	130	226	295	413	427	342	178	38	8	2169
50 S	9	38	110	240	466	762	1175	1602	1945	2122	2161	2169	2169

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