JEROME, IDAHO

Period of Record General Climate Summary - Growing Degree Days

Station:(104670) JEROME
From Year=1915 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	4	17	86	255	521	748	1051	984	660	346	69	10	4751
40 S	4	21	108	363	883	1631	2682	3666	4326	4672	4741	4751	4751
45 M	0	3	31	144	371	598	896	829	511	216	24	2	3625
45 S	0	3	34	178	550	1148	2044	2873	3384	3600	3624	3625	3625
50 M	0	0	8	68	239	450	741	674	368	114	5	0	2666
50 S	0	0	8	76	315	765	1506	2180	2547	2661	2666	2666	2666
55 M	0	0	1	25	134	310	586	520	237	47	0	0	1860
55 S	0	0	1	26	160	469	1056	1575	1812	1860	1860	1860	1860
60 M	0	0	0	7	62	188	432	369	129	14	0	0	1201
60 S	0	0	0	7	69	257	689	1058	1187	1200	1201	1201	1201

Corn Growing Degree Days
50 M	2	14	73	190	342	470	646	609	433	251	55	5	3090
50 S	2	16	89	279	621	1091	1736	2345	2779	3030	3085	3090	3090

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