BONNERS FERRY, IDAHO

Period of Record General Climate Summary - Growing Degree Days

Station:(101079) BONNERS FERRY
From Year=1907 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	2	5	47	214	457	629	831	798	513	195	25	3	3719
40 S	2	8	55	269	726	1355	2186	2984	3497	3691	3716	3719	3719
45 M	0	0	9	100	305	479	676	643	365	88	5	0	2671
45 S	0	1	10	110	416	895	1570	2214	2579	2666	2671	2671	2671
50 M	0	0	1	35	171	331	521	489	227	27	0	0	1801
50 S	0	0	1	36	207	538	1058	1547	1774	1801	1801	1801	1801
55 M	0	0	0	8	75	193	367	336	114	4	0	0	1099
55 S	0	0	0	8	83	277	644	980	1094	1099	1099	1099	1099
60 M	0	0	0	1	23	88	222	195	41	0	0	0	570
60 S	0	0	0	1	24	112	334	529	570	570	570	570	570

Corn Growing Degree Days
50 M	0	2	38	153	295	388	520	505	336	124	6	0	2368
50 S	0	2	40	194	489	876	1396	1901	2237	2361	2367	2368	2368

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