PARMA EXPERIMENT STN, IDAHO

Period of Record General Climate Summary - Growing Degree Days

Station:(106844) PARMA EXPERIMENT STN
From Year=1922 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	8	26	131	320	581	775	1038	976	657	337	61	14	4925
40 S	8	33	164	485	1066	1841	2879	3855	4512	4849	4910	4925	4925
45 M	1	5	50	191	428	625	883	821	508	199	18	4	3734
45 S	1	6	57	247	675	1301	2183	3004	3512	3712	3730	3734	3734
50 M	0	1	13	95	284	476	728	666	362	96	4	1	2724
50 S	0	1	14	109	393	868	1596	2262	2624	2720	2723	2724	2724
55 M	0	0	2	36	164	331	573	511	228	34	0	0	1879
55 S	0	0	2	38	202	532	1105	1617	1844	1878	1879	1879	1879
60 M	0	0	0	9	78	202	419	360	118	8	0	0	1194
60 S	0	0	0	9	87	289	708	1068	1186	1194	1194	1194	1194

Corn Growing Degree Days
50 M	3	21	112	233	375	482	627	592	444	264	49	7	3208
50 S	3	25	137	369	744	1226	1853	2445	2889	3152	3201	3208	3208

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