JEROME, IDAHO

Period of Record General Climate Summary - Growing Degree Days

Station:(104670) JEROME
From Year=1919 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	6	20	89	245	517	751	1036	980	652	339	68	8	4712
40 S	6	26	115	361	878	1629	2665	3644	4296	4636	4704	4712	4712
45 M	1	4	32	135	368	601	881	825	503	211	23	1	3585
45 S	1	4	37	172	540	1142	2022	2847	3350	3561	3584	3585	3585
50 M	0	0	8	62	236	453	726	670	360	112	4	0	2630
50 S	0	0	8	70	306	759	1484	2154	2514	2626	2630	2630	2630
55 M	0	0	1	22	131	313	571	515	231	47	0	0	1830
55 S	0	0	1	23	154	466	1037	1552	1783	1830	1830	1830	1830
60 M	0	0	0	6	60	191	417	365	125	14	0	0	1177
60 S	0	0	0	6	65	256	674	1038	1163	1177	1177	1177	1177

Corn Growing Degree Days
50 M	2	17	77	185	339	471	638	606	428	248	54	4	3069
50 S	2	20	96	281	621	1091	1729	2335	2762	3010	3064	3069	3069

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