ELK RIVER 1 S, IDAHO

Period of Record General Climate Summary - Growing Degree Days

Station:(102892) ELK RIVER 1 S
From Year=1952 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	0	1	19	112	322	515	730	709	443	168	15	0	3035
40 S	0	2	21	133	455	971	1701	2409	2852	3020	3035	3035	3035
45 M	0	0	3	46	192	367	575	554	300	74	2	0	2114
45 S	0	0	3	49	241	609	1183	1737	2037	2112	2114	2114	2114
50 M	0	0	0	14	97	230	421	401	176	24	0	0	1364
50 S	0	0	0	15	112	342	763	1164	1339	1364	1364	1364	1364
55 M	0	0	0	4	40	121	273	254	82	5	0	0	780
55 S	0	0	0	4	44	165	439	693	775	780	780	780	780
60 M	0	0	0	1	13	52	147	130	26	0	0	0	369
60 S	0	0	0	1	13	65	212	342	369	369	369	369	369

Corn Growing Degree Days
50 M	0	4	26	92	219	323	477	472	327	148	12	0	2100
50 S	0	4	30	122	341	664	1141	1612	1939	2088	2100	2100	2100

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