FT DAVIS, TEXAS

Period of Record General Climate Summary - Growing Degree Days

Station:(413262) FORT DAVIS
From Year=1902 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	189	251	448	660	917	1058	1092	1060	878	662	358	200	7772
40 S	189	439	887	1547	2464	3522	4614	5674	6552	7214	7572	7772	7772
45 M	89	142	302	512	762	908	937	905	728	509	226	100	6120
45 S	89	231	534	1045	1807	2715	3652	4557	5286	5794	6020	6120	6120
50 M	30	63	174	367	607	758	782	750	579	360	118	36	4623
50 S	30	94	267	634	1241	1999	2780	3531	4109	4469	4587	4623	4623
55 M	5	20	77	230	453	608	627	595	429	220	44	8	3316
55 S	5	25	102	332	785	1393	2020	2615	3045	3265	3308	3316	3316
60 M	0	4	22	115	302	459	472	440	283	104	8	1	2210
60 S	0	4	26	141	443	902	1374	1814	2096	2201	2209	2210	2210

Corn Growing Degree Days
50 M	182	212	335	448	587	678	723	704	571	440	268	180	5327
50 S	182	394	729	1177	1763	2442	3165	3869	4440	4879	5148	5327	5327

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