PARKDALE 1 NNE, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(356466) PARKDALE 2 NNE
From Year=1981 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	22	30	103	213	408	566	765	759	556	290	75	13	3799
40 S	22	52	154	368	776	1342	2106	2865	3422	3712	3787	3799	3799
45 M	4	6	29	103	260	416	610	604	408	159	23	2	2624
45 S	4	11	40	143	403	819	1428	2032	2440	2599	2622	2624	2624
50 M	0	1	6	39	139	269	455	449	265	65	5	0	1693
50 S	0	1	8	46	185	455	909	1358	1624	1688	1693	1693	1693
55 M	0	0	1	11	62	146	303	297	144	19	1	0	982
55 S	0	0	1	12	74	219	522	818	962	981	982	982	982
60 M	0	0	0	2	22	63	168	162	59	4	0	0	480
60 S	0	0	0	2	24	87	255	417	476	480	480	480	480

Corn Growing Degree Days
50 M	10	17	67	137	252	345	476	479	367	191	31	5	2376
50 S	10	27	94	231	483	828	1304	1783	2150	2341	2372	2376	2376

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