DATELAND, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(022430) DATELAND
From Year=1952 To Year=1968
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	389	489	684	902	1188	1396	1683	1632	1391	1092	639	412	11896
40 S	389	878	1562	2464	3652	5048	6731	8363	9754	10846	11485	11896	11896
45 M	241	350	529	752	1033	1246	1528	1477	1241	937	489	260	10083
45 S	241	591	1120	1872	2905	4151	5679	7155	8397	9333	9823	10083	10083
50 M	116	218	375	602	878	1096	1373	1322	1091	782	343	125	8320
50 S	116	334	709	1311	2189	3285	4658	5979	7071	7852	8195	8320	8320
55 M	33	112	232	452	723	946	1218	1167	941	627	210	36	6697
55 S	33	145	377	829	1552	2498	3716	4883	5824	6451	6661	6697	6697
60 M	3	45	114	309	568	796	1063	1012	791	474	106	5	5287
60 S	3	49	163	472	1040	1836	2899	3911	4702	5176	5282	5287	5287

Corn Growing Degree Days
50 M	288	332	447	562	722	828	1018	997	838	670	425	299	7426
50 S	288	620	1067	1628	2351	3179	4197	5193	6032	6701	7126	7426	7426

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