BOYS RANCH, TEXAS

Period of Record General Climate Summary - Growing Degree Days

Station:(411000) BOYS RANCH
From Year=1964 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	67	118	300	516	820	1073	1235	1169	899	568	232	69	7066
40 S	67	186	486	1002	1822	2895	4130	5299	6198	6766	6998	7066	7066
45 M	23	55	184	375	665	923	1080	1014	749	419	132	25	5645
45 S	23	78	263	638	1303	2226	3306	4320	5069	5488	5620	5645	5645
50 M	5	20	94	246	512	773	925	859	600	279	60	6	4380
50 S	5	25	119	365	877	1651	2575	3434	4034	4313	4373	4380	4380
55 M	1	4	40	140	364	624	770	704	454	159	20	1	3280
55 S	1	5	45	185	549	1173	1942	2646	3100	3259	3279	3280	3280
60 M	0	0	13	64	229	474	615	549	312	73	4	0	2334
60 S	0	0	13	77	306	781	1395	1944	2257	2330	2334	2334	2334

Corn Growing Degree Days
50 M	110	136	249	353	515	691	804	766	578	385	210	101	4898
50 S	110	246	495	847	1362	2054	2858	3624	4202	4587	4796	4898	4898

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