ROSEBURG KQEN, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(357331) ROSEBURG KQEN
From Year=1965 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	125	163	262	356	560	720	932	939	748	489	232	113	5639
40 S	125	288	550	906	1466	2185	3117	4056	4805	5294	5526	5639	5639
45 M	45	66	130	212	405	570	777	784	598	336	113	39	4075
45 S	45	111	241	453	858	1427	2204	2988	3587	3923	4036	4075	4075
50 M	10	18	47	101	256	420	622	629	449	193	38	9	2791
50 S	10	27	74	175	431	851	1472	2102	2550	2744	2782	2791	2791
55 M	1	3	10	37	134	273	467	474	301	85	9	1	1796
55 S	1	4	14	51	185	458	925	1399	1701	1786	1795	1796	1796
60 M	0	0	1	10	58	146	314	320	169	27	1	0	1046
60 S	0	0	1	11	69	215	529	848	1017	1044	1045	1046	1046

Corn Growing Degree Days
50 M	43	76	142	204	328	431	579	583	459	282	93	35	3253
50 S	43	120	261	465	793	1224	1803	2385	2844	3126	3219	3253	3253

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