FT GRANT, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(023110) FORT GRANT
From Year=1900 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	194	236	409	595	857	1110	1208	1157	994	735	400	204	8098
40 S	194	430	838	1433	2290	3400	4608	5765	6759	7494	7894	8098	8098
45 M	90	132	268	447	702	960	1053	1002	844	581	262	98	6439
45 S	90	222	490	937	1639	2600	3652	4654	5498	6078	6340	6439	6439
50 M	29	59	147	305	548	810	898	847	694	428	146	34	4944
50 S	29	87	234	539	1087	1897	2794	3641	4335	4764	4910	4944	4944
55 M	5	19	60	178	396	660	743	692	544	281	62	7	3647
55 S	5	24	83	261	658	1318	2060	2752	3296	3577	3640	3647	3647
60 M	0	4	14	78	253	510	588	537	394	150	19	1	2548
60 S	0	4	19	97	350	860	1447	1984	2378	2529	2547	2548	2548

Corn Growing Degree Days
50 M	131	157	257	375	553	714	794	775	661	460	251	137	5264
50 S	131	288	545	919	1472	2186	2980	3755	4417	4877	5127	5264	5264

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