GROOM CREEK, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(023713) GROOM CREEK
From Year=1917 To Year=1976
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	24	45	95	219	447	685	893	822	673	401	127	30	4462
40 S	24	70	165	384	831	1517	2409	3232	3904	4305	4432	4462	4462
45 M	3	10	32	108	301	536	738	667	523	259	46	3	3226
45 S	3	13	45	153	454	989	1727	2394	2917	3176	3223	3226	3226
50 M	0	1	8	39	171	387	583	512	373	136	7	0	2218
50 S	0	1	9	48	219	606	1189	1701	2074	2210	2218	2218	2218
55 M	0	0	2	8	69	245	428	357	229	46	0	0	1384
55 S	0	0	2	9	79	324	752	1109	1338	1384	1384	1384	1384
60 M	0	0	1	1	16	124	273	204	104	7	0	0	730
60 S	0	0	1	2	18	141	415	619	723	730	730	730	730

Corn Growing Degree Days
50 M	44	72	119	204	336	465	569	523	438	297	137	60	3264
50 S	44	116	236	440	775	1241	1809	2332	2770	3067	3204	3264	3264

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