HALFWAY, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(353604) HALFWAY
From Year=1936 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	1	5	62	218	453	638	887	841	568	258	36	3	3969
40 S	1	5	68	286	739	1376	2264	3104	3672	3930	3966	3969	3969
45 M	0	0	17	109	305	488	732	686	419	140	8	0	2905
45 S	0	0	18	127	432	920	1652	2338	2757	2897	2905	2905	2905
50 M	0	0	3	41	177	340	577	531	278	58	1	0	2006
50 S	0	0	3	44	221	561	1138	1669	1947	2005	2006	2006	2006
55 M	0	0	0	10	83	205	423	378	156	16	0	0	1272
55 S	0	0	0	11	94	298	721	1099	1255	1272	1272	1272	1272
60 M	0	0	0	2	29	99	274	232	67	2	0	0	705
60 S	0	0	0	2	31	130	404	636	703	705	705	705	705

Corn Growing Degree Days
50 M	0	6	60	185	332	428	558	542	420	228	31	1	2790
50 S	0	6	66	251	583	1011	1569	2111	2530	2758	2789	2790	2790

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