CHISOS BASIN, TEXAS

Period of Record General Climate Summary - Growing Degree Days

Station:(411715) CHISOS BASIN
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	268	313	514	719	950	1052	1061	1028	871	710	435	292	8214
40 S	268	581	1095	1813	2764	3815	4876	5904	6775	7486	7921	8214	8214
45 M	154	195	368	571	795	902	906	873	721	557	299	171	6512
45 S	154	349	717	1288	2083	2985	3891	4764	5485	6042	6341	6512	6512
50 M	70	103	235	426	640	752	751	718	572	407	180	80	4934
50 S	70	173	409	834	1475	2226	2977	3695	4267	4674	4854	4934	4934
55 M	23	42	126	287	486	602	596	563	423	262	86	26	3523
55 S	23	65	191	478	964	1566	2162	2725	3148	3410	3497	3523	3523
60 M	4	11	50	165	336	452	441	408	278	135	27	4	2311
60 S	4	15	64	230	566	1017	1458	1866	2144	2279	2306	2311	2311

Corn Growing Degree Days
50 M	150	182	311	456	627	711	729	704	569	430	249	164	5282
50 S	150	332	643	1098	1726	2437	3166	3870	4439	4869	5118	5282	5282

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