CORTARO 3 SW, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(022159) CORTARO 3 SW
From Year=1945 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	330	391	575	778	1059	1322	1485	1407	1245	945	556	361	10453
40 S	330	721	1296	2074	3133	4454	5939	7346	8591	9536	10092	10453	10453
45 M	195	258	422	628	904	1172	1330	1252	1095	790	409	221	8675
45 S	195	453	875	1503	2406	3578	4908	6160	7255	8045	8454	8675	8675
50 M	88	143	278	479	749	1022	1175	1097	945	635	270	108	6988
50 S	88	231	508	987	1736	2758	3933	5029	5975	6610	6880	6988	6988
55 M	25	60	155	334	594	872	1020	942	795	482	149	38	5466
55 S	25	85	240	574	1168	2040	3059	4001	4797	5278	5428	5466	5466
60 M	4	16	66	203	441	722	865	787	645	333	60	8	4150
60 S	4	20	87	289	730	1452	2317	3104	3749	4081	4142	4150	4150

Corn Growing Degree Days
50 M	262	300	406	507	637	776	915	877	763	590	389	282	6703
50 S	262	562	968	1475	2112	2888	3803	4680	5443	6033	6422	6703	6703

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