SANTA RITA EXP RANGE, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(027593) SANTA RITA EXP RANGE
From Year=1950 To Year=2010
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	293	323	474	654	929	1168	1222	1148	1041	841	481	302	8876
40 S	293	616	1090	1744	2673	3841	5063	6211	7252	8093	8573	8876	8876
45 M	166	199	328	506	774	1018	1067	993	891	687	339	174	7143
45 S	166	366	694	1200	1974	2992	4059	5052	5943	6629	6969	7143	7143
50 M	74	103	200	361	619	868	912	838	741	533	212	78	5540
50 S	74	177	377	738	1357	2225	3138	3975	4716	5250	5462	5540	5540
55 M	22	39	101	229	465	718	757	683	591	384	109	23	4121
55 S	22	60	161	391	856	1574	2331	3014	3605	3989	4098	4121	4121
60 M	3	8	37	119	317	568	602	528	441	244	40	3	2911
60 S	3	12	49	167	484	1052	1655	2182	2623	2868	2908	2911	2911

Corn Growing Degree Days
50 M	169	192	287	413	608	758	817	783	709	543	283	171	5734
50 S	169	361	648	1061	1669	2427	3244	4027	4736	5280	5563	5734	5734

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