HEPPNER, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(353827) HEPPNER
From Year=1928 To Year=2006
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	47	63	144	266	485	665	894	873	629	364	116	54	4599
40 S	47	110	254	520	1005	1669	2563	3436	4066	4429	4546	4599	4599
45 M	15	21	58	143	333	515	739	718	480	224	47	17	3309
45 S	15	36	94	237	570	1084	1823	2541	3021	3245	3291	3309	3309
50 M	3	5	17	62	199	366	584	563	335	114	14	4	2264
50 S	3	8	25	87	286	652	1235	1798	2133	2247	2261	2264	2264
55 M	0	1	3	20	100	227	429	408	203	45	3	0	1440
55 S	0	1	4	24	124	351	781	1189	1392	1437	1440	1440	1440
60 M	0	0	0	5	41	119	281	260	100	12	0	0	819
60 S	0	0	0	5	46	165	447	707	806	819	819	819	819

Corn Growing Degree Days
50 M	21	32	85	165	296	406	557	546	395	228	60	24	2817
50 S	21	53	138	303	599	1005	1563	2109	2504	2732	2793	2817	2817

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 Jul 28, 2006
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