WALLOWA, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(358997) WALLOWA
From Year=1903 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	5	10	59	184	386	568	793	745	500	227	37	9	3524
40 S	5	15	73	258	644	1212	2005	2750	3250	3478	3514	3524	3524
45 M	1	1	15	85	241	419	638	590	353	112	10	2	2467
45 S	1	2	17	101	342	761	1399	1989	2342	2455	2465	2467	2467
50 M	0	0	2	28	124	274	483	436	217	40	2	0	1605
50 S	0	0	2	30	155	428	911	1347	1564	1603	1605	1605	1605
55 M	0	0	0	6	50	147	330	286	107	9	0	0	935
55 S	0	0	0	6	56	204	533	819	926	935	935	935	935
60 M	0	0	0	1	15	61	188	152	38	1	0	0	456
60 S	0	0	0	1	15	77	265	417	455	456	456	456	456

Corn Growing Degree Days
50 M	2	9	58	156	277	377	519	504	383	205	28	4	2522
50 S	2	11	69	225	502	878	1397	1902	2284	2489	2517	2522	2522

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