SPRAGUE RIVER 2 SE, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(358007) SPRAGUE RIVER
From Year=1953 To Year=2001
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	3	13	35	115	296	491	714	674	439	196	35	5	3015
40 S	3	16	51	166	461	952	1667	2341	2779	2975	3010	3015	3015
45 M	0	2	8	44	172	346	559	519	296	92	8	0	2047
45 S	0	2	9	54	226	572	1131	1650	1946	2039	2046	2047	2047
50 M	0	0	0	11	82	214	407	367	172	31	1	0	1284
50 S	0	0	0	11	94	307	714	1080	1252	1283	1284	1284	1284
55 M	0	0	0	2	30	110	262	224	76	7	0	0	709
55 S	0	0	0	2	31	141	403	627	702	709	709	709	709
60 M	0	0	0	0	6	43	136	107	21	0	0	0	314
60 S	0	0	0	0	6	50	186	292	313	314	314	314	314

Corn Growing Degree Days
50 M	2	17	53	134	262	372	504	494	394	238	44	4	2519
50 S	2	20	73	207	469	841	1345	1839	2233	2471	2516	2519	2519

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