GLOBE 2, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(023500) GLOBE 2
From Year=1975 To Year=2008
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	196	263	424	628	909	1178	1333	1258	1067	799	420	180	8655
40 S	196	459	883	1511	2420	3598	4931	6189	7256	8055	8474	8655	8655
45 M	83	140	278	480	754	1028	1178	1103	917	644	280	75	6960
45 S	83	222	501	980	1734	2762	3940	5043	5961	6604	6885	6960	6960
50 M	22	50	157	335	600	878	1023	948	767	490	157	16	5442
50 S	22	72	228	563	1162	2040	3063	4011	4779	5269	5426	5442	5442
55 M	2	10	70	200	447	728	868	793	617	342	66	1	4144
55 S	2	12	81	282	729	1457	2325	3118	3735	4078	4143	4144	4144
60 M	0	1	20	91	300	578	713	638	467	208	16	0	3032
60 S	0	1	21	112	412	989	1703	2341	2808	3016	3032	3032	3032

Corn Growing Degree Days
50 M	124	176	275	408	579	732	855	826	705	517	267	130	5593
50 S	124	300	575	983	1561	2294	3149	3975	4680	5196	5463	5593	5593

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