SISTERS, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(357857) SISTERS
From Year=1958 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	15	21	56	125	305	502	729	699	462	211	49	13	3185
40 S	15	36	92	217	522	1024	1752	2451	2913	3124	3173	3185	3185
45 M	2	4	15	54	178	355	574	544	318	104	14	2	2164
45 S	2	6	21	76	253	608	1182	1726	2044	2148	2162	2164	2164
50 M	0	0	3	18	88	220	420	391	189	38	2	0	1370
50 S	0	1	3	22	110	330	750	1141	1330	1368	1370	1370	1370
55 M	0	0	0	4	36	116	273	247	92	9	0	0	777
55 S	0	0	0	5	41	156	429	676	767	777	777	777	777
60 M	0	0	0	1	11	47	149	126	31	1	0	0	365
60 S	0	0	0	1	11	58	207	333	364	365	365	365	365

Corn Growing Degree Days
50 M	10	22	61	121	241	361	499	487	372	205	37	9	2424
50 S	10	32	93	214	454	816	1314	1801	2173	2378	2415	2424	2424

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