THREE CREEK, IDAHO

Period of Record General Climate Summary - Growing Degree Days

Station:(109119) THREE CREEK
From Year=1940 To Year=1987
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	24	105	277	471	746	691	430	185	34	8	2985
40 S	5	15	39	144	420	891	1636	2327	2757	2942	2977	2985	2985
45 M	1	1	5	43	156	324	591	536	290	93	8	1	2050
45 S	1	2	7	50	207	531	1122	1658	1948	2041	2049	2050	2050
50 M	0	0	0	13	70	193	436	383	170	34	1	0	1300
50 S	0	0	1	14	83	276	713	1095	1265	1299	1300	1300	1300
55 M	0	0	0	3	23	92	285	237	81	8	0	0	728
55 S	0	0	0	3	26	117	402	639	719	728	728	728	728
60 M	0	0	0	0	5	31	150	114	28	2	0	0	330
60 S	0	0	0	0	5	37	186	300	329	330	330	330	330

Corn Growing Degree Days
50 M	7	14	34	119	237	355	533	519	378	212	57	14	2479
50 S	7	21	55	174	410	765	1298	1818	2196	2408	2464	2479	2479

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