COTTAGE GROVE DAM, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(351902) COTTAGE GROVE DAM
From Year=1943 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	72	101	165	265	443	588	780	786	638	396	161	75	4469
40 S	72	173	338	603	1046	1634	2414	3200	3837	4234	4394	4469	4469
45 M	21	32	65	135	290	438	625	631	488	247	66	22	3061
45 S	21	53	118	254	544	982	1607	2238	2726	2972	3038	3061	3061
50 M	4	6	17	54	157	289	470	476	339	121	17	4	1952
50 S	4	9	26	80	237	526	996	1472	1810	1931	1948	1952	1952
55 M	0	0	2	16	68	155	315	321	198	43	2	0	1121
55 S	0	1	3	19	86	241	557	878	1076	1119	1121	1121	1121
60 M	0	0	0	3	23	63	173	174	89	10	0	0	535
60 S	0	0	0	3	25	89	261	436	525	535	535	535	535

Corn Growing Degree Days
50 M	23	47	87	145	244	331	474	479	384	217	63	22	2516
50 S	23	70	157	302	546	877	1351	1830	2215	2432	2494	2516	2516

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