KOOSKIA, IDAHO

Period of Record General Climate Summary - Growing Degree Days

Station:(105011) KOOSKIA
From Year=1908 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	6	27	122	311	548	739	974	934	644	329	53	11	4697
40 S	6	33	154	465	1014	1752	2726	3660	4304	4633	4686	4697	4697
45 M	0	4	42	177	395	589	819	779	494	192	12	1	3504
45 S	0	5	47	224	619	1207	2026	2805	3299	3491	3503	3504	3504
50 M	0	0	9	80	251	439	664	624	347	88	1	0	2504
50 S	0	0	10	89	340	779	1443	2067	2415	2503	2504	2504	2504
55 M	0	0	1	27	133	293	509	469	213	29	0	0	1674
55 S	0	0	1	28	161	454	963	1432	1646	1674	1674	1674	1674
60 M	0	0	0	7	55	163	355	317	105	5	0	0	1008
60 S	0	0	0	7	62	225	580	897	1002	1008	1008	1008	1008

Corn Growing Degree Days
50 M	3	20	100	224	360	460	581	561	431	238	29	4	3012
50 S	3	23	124	347	707	1167	1749	2310	2741	2979	3008	3012	3012

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