MODOC ORCHARD, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(355656) MODOC ORCHARD
From Year=1915 To Year=1966
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	46	103	212	368	554	729	957	929	709	432	140	56	5234
40 S	46	149	361	728	1282	2011	2968	3897	4606	5038	5178	5234	5234
45 M	11	33	97	228	400	579	802	774	559	283	55	15	3836
45 S	11	45	141	369	769	1348	2150	2924	3482	3765	3820	3836	3836
50 M	2	5	30	114	254	429	647	619	410	152	14	3	2679
50 S	2	7	37	151	406	835	1482	2101	2510	2662	2676	2679	2679
55 M	0	0	5	40	134	283	492	464	266	59	2	0	1746
55 S	0	1	6	46	180	463	955	1419	1685	1744	1746	1746	1746
60 M	0	0	0	8	54	154	338	310	142	15	0	0	1021
60 S	0	0	0	8	62	216	554	864	1006	1021	1021	1021	1021

Corn Growing Degree Days
50 M	20	73	158	263	373	461	579	566	468	314	91	20	3384
50 S	20	94	252	514	887	1348	1927	2493	2960	3274	3364	3384	3384

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