CORDES, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(022109) CORDES
From Year=1925 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	177	213	347	525	794	1038	1263	1209	1012	728	382	204	7892
40 S	177	390	737	1262	2056	3094	4357	5566	6578	7306	7688	7892	7892
45 M	77	108	210	379	639	888	1108	1054	862	573	246	96	6240
45 S	77	185	395	774	1413	2301	3409	4463	5325	5899	6144	6240	6240
50 M	23	41	102	243	485	738	953	899	712	422	132	31	4780
50 S	23	63	166	408	893	1631	2584	3483	4195	4617	4749	4780	4780
55 M	4	9	36	128	335	588	798	744	563	278	54	5	3541
55 S	4	13	49	177	512	1100	1898	2642	3205	3482	3536	3541	3541
60 M	0	1	8	50	200	439	643	589	413	153	14	0	2511
60 S	0	2	9	59	259	698	1341	1930	2343	2497	2510	2511	2511

Corn Growing Degree Days
50 M	125	147	236	346	508	644	801	784	656	456	246	141	5091
50 S	125	273	508	855	1363	2007	2808	3592	4248	4704	4950	5091	5091

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