JEROME, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(024453) JEROME
From Year=1897 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	120	166	307	510	786	1056	1207	1128	961	675	327	145	7389
40 S	120	286	594	1104	1890	2946	4153	5281	6242	6917	7244	7389	7389
45 M	46	80	185	370	632	906	1052	973	811	522	203	60	5840
45 S	46	126	311	681	1313	2219	3271	4244	5054	5577	5779	5840	5840
50 M	11	28	94	241	480	756	897	818	661	375	103	16	4480
50 S	11	39	133	374	855	1611	2508	3325	3986	4361	4464	4480	4480
55 M	1	6	37	134	336	607	742	663	511	240	38	2	3316
55 S	1	7	44	178	514	1121	1862	2525	3036	3276	3314	3316	3316
60 M	0	1	9	58	206	458	587	508	363	125	8	0	2324
60 S	0	1	10	68	274	732	1319	1826	2190	2315	2324	2324	2324

Corn Growing Degree Days
50 M	56	85	169	298	495	706	815	771	644	401	166	67	4673
50 S	56	141	309	608	1103	1809	2623	3395	4039	4439	4605	4673	4673

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