GRANGEVILLE, IDAHO

Period of Record General Climate Summary - Growing Degree Days

Station:(103771) GRANGEVILLE
From Year=1893 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	9	17	58	167	368	548	829	811	521	244	48	13	3634
40 S	9	26	84	252	620	1168	1997	2808	3329	3574	3621	3634	3634
45 M	1	3	17	81	232	399	674	656	376	131	14	2	2586
45 S	1	4	21	102	334	733	1407	2063	2439	2571	2584	2586	2586
50 M	0	0	3	31	125	258	519	501	244	56	3	0	1741
50 S	0	0	3	35	160	418	937	1438	1682	1738	1741	1741	1741
55 M	0	0	0	9	56	141	367	350	135	18	0	0	1076
55 S	0	0	0	9	65	206	572	922	1058	1075	1076	1076	1076
60 M	0	0	0	1	19	62	225	211	60	3	0	0	583
60 S	0	0	0	1	21	83	309	520	580	583	583	583	583

Corn Growing Degree Days
50 M	2	9	40	111	221	321	520	509	331	154	24	4	2245
50 S	2	11	52	162	383	704	1224	1733	2064	2218	2241	2245	2245

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