FAIRFIELD R S, IDAHO

Period of Record General Climate Summary - Growing Degree Days

Station:(103108) FAIRFIELD R S
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	0	6	108	336	536	796	749	454	196	13	0	3195
40 S	0	0	7	115	451	987	1784	2532	2986	3182	3195	3195	3195
45 M	0	0	1	44	202	388	641	594	314	98	1	0	2282
45 S	0	0	1	45	247	635	1276	1870	2184	2281	2282	2282	2282
50 M	0	0	0	14	100	249	486	441	190	36	0	0	1515
50 S	0	0	0	14	114	362	848	1289	1479	1515	1515	1515	1515
55 M	0	0	0	3	37	133	334	292	91	8	0	0	898
55 S	0	0	0	3	40	173	507	799	890	898	898	898	898
60 M	0	0	0	0	9	54	191	157	30	1	0	0	441
60 S	0	0	0	0	9	63	254	410	440	441	441	441	441

Corn Growing Degree Days
50 M	0	1	13	103	257	377	533	514	369	214	26	0	2406
50 S	0	1	14	117	374	751	1284	1797	2166	2380	2406	2406	2406

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