WINCHESTER 1 SE, IDAHO

Period of Record General Climate Summary - Growing Degree Days

Station:(109840) WINCHESTER 1 SE
From Year=1939 To Year=1965
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	3	9	27	119	295	451	730	687	462	221	36	7	3045
40 S	3	12	39	157	452	903	1633	2320	2782	3003	3038	3045	3045
45 M	0	1	6	48	168	304	575	532	318	116	8	1	2077
45 S	0	1	7	55	224	528	1102	1634	1952	2068	2076	2077	2077
50 M	0	0	0	14	79	171	421	378	190	45	1	0	1300
50 S	0	0	1	15	93	265	685	1064	1254	1299	1300	1300	1300
55 M	0	0	0	2	28	77	272	232	93	12	0	0	716
55 S	0	0	0	2	30	108	379	611	704	716	716	716	716
60 M	0	0	0	0	7	26	142	112	33	2	0	0	322
60 S	0	0	0	0	7	34	175	287	320	322	322	322	322

Corn Growing Degree Days
50 M	2	6	23	93	194	275	474	454	315	153	23	3	2014
50 S	2	7	30	123	317	592	1066	1520	1835	1988	2011	2014	2014

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