HAMER 4 NW, IDAHO

Period of Record General Climate Summary - Growing Degree Days

Station:(103964) HAMER 4 NW
From Year=1948 To Year=2006
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	147	401	620	863	806	493	181	11	0	3541
40 S	0	1	20	166	567	1187	2050	2856	3348	3529	3540	3541	3541
45 M	0	0	3	66	260	470	708	651	349	86	2	0	2596
45 S	0	0	3	69	329	799	1507	2158	2507	2594	2595	2596	2596
50 M	0	0	0	22	142	324	553	496	218	30	0	0	1786
50 S	0	0	0	22	164	489	1042	1538	1756	1786	1786	1786	1786
55 M	0	0	0	5	59	193	399	345	109	6	0	0	1115
55 S	0	0	0	5	64	257	655	1000	1109	1115	1115	1115	1115
60 M	0	0	0	0	17	90	250	201	39	1	0	0	597
60 S	0	0	0	0	17	107	357	558	597	597	597	597	597

Corn Growing Degree Days
50 M	0	1	34	156	304	418	555	535	383	200	22	0	2607
50 S	0	1	35	191	495	913	1467	2002	2385	2585	2607	2607	2607

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 Jul 28, 2006
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