CHILDS, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(021614) CHILDS
From Year=1915 To Year=2005
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	204	288	445	644	925	1162	1387	1317	1109	817	429	222	8949
40 S	204	492	937	1581	2506	3668	5055	6372	7481	8298	8727	8949	8949
45 M	90	165	297	495	770	1012	1232	1162	959	662	286	104	7235
45 S	90	256	553	1048	1818	2830	4062	5224	6183	6845	7131	7235	7235
50 M	24	73	168	351	615	862	1077	1007	809	509	160	30	5684
50 S	24	97	265	616	1231	2093	3171	4177	4986	5495	5654	5684	5684
55 M	3	22	74	220	462	712	922	852	659	360	66	4	4355
55 S	3	25	99	319	780	1492	2414	3266	3925	4285	4351	4355	4355
60 M	0	3	22	111	314	562	767	697	509	222	19	0	3226
60 S	0	4	25	136	450	1012	1779	2476	2985	3207	3226	3226	3226

Corn Growing Degree Days
50 M	166	218	317	428	570	676	831	804	677	519	311	177	5694
50 S	166	384	702	1129	1699	2375	3206	4010	4687	5206	5517	5694	5694

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