SACATON, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(027370) SACATON
From Year=1908 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	310	401	593	804	1087	1330	1546	1487	1281	950	545	329	10662
40 S	310	711	1304	2108	3195	4526	6072	7558	8839	9789	10334	10662	10662
45 M	176	266	439	654	932	1180	1391	1332	1131	795	397	189	8881
45 S	176	441	880	1534	2466	3647	5038	6370	7500	8295	8692	8881	8881
50 M	74	147	291	505	777	1030	1236	1177	981	640	258	82	7199
50 S	74	221	512	1017	1794	2825	4060	5237	6218	6858	7116	7199	7199
55 M	20	61	164	359	622	880	1081	1022	831	487	141	23	5692
55 S	20	82	246	605	1227	2108	3188	4210	5041	5528	5669	5692	5692
60 M	3	16	71	225	469	730	926	867	681	339	58	3	4390
60 S	3	20	91	316	785	1515	2441	3308	3989	4328	4386	4390	4390

Corn Growing Degree Days
50 M	245	290	402	512	653	773	943	916	781	598	388	259	6760
50 S	245	535	937	1449	2102	2875	3818	4734	5515	6113	6501	6760	6760

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