LA TUNA 1 S, TEXAS

Period of Record General Climate Summary - Growing Degree Days

Station:(414931) LA TUNA 1 S
From Year=1943 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	161	262	471	697	993	1220	1320	1253	1040	761	361	160	8700
40 S	161	423	893	1591	2584	3804	5124	6377	7417	8179	8540	8700	8700
45 M	68	145	323	548	838	1070	1165	1098	890	607	226	65	7044
45 S	68	213	536	1083	1922	2991	4157	5255	6145	6752	6978	7044	7044
50 M	18	59	191	400	683	920	1010	943	741	454	115	18	5550
50 S	18	77	268	668	1351	2271	3281	4224	4964	5418	5533	5550	5550
55 M	3	15	89	259	529	770	855	788	591	305	39	3	4245
55 S	3	17	106	365	894	1664	2519	3307	3898	4203	4242	4245	4245
60 M	0	2	28	136	375	620	700	633	442	170	7	0	3114
60 S	0	2	30	166	542	1161	1862	2495	2936	3106	3113	3114	3114

Corn Growing Degree Days
50 M	144	207	331	459	634	762	850	817	678	495	264	144	5784
50 S	144	352	683	1142	1775	2537	3387	4204	4882	5376	5640	5784	5784

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