PECOS, TEXAS

Period of Record General Climate Summary - Growing Degree Days

Station:(416892) PECOS
From Year=1904 To Year=2000
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	196	277	511	760	1053	1264	1362	1321	1078	795	394	217	9228
40 S	196	473	984	1744	2797	4061	5423	6744	7822	8617	9011	9228	9228
45 M	101	167	368	612	898	1114	1207	1166	928	641	262	114	7577
45 S	101	268	636	1248	2146	3260	4467	5633	6561	7202	7463	7577	7577
50 M	39	83	238	467	743	964	1052	1011	778	489	151	47	6062
50 S	39	122	361	828	1571	2535	3587	4598	5376	5865	6015	6062	6062
55 M	11	32	130	329	589	814	897	856	629	342	70	14	4713
55 S	11	43	173	502	1091	1905	2802	3658	4287	4629	4699	4713	4713
60 M	2	8	54	203	438	664	742	701	482	208	23	3	3528
60 S	2	10	65	268	706	1370	2112	2813	3294	3502	3525	3528	3528

Corn Growing Degree Days
50 M	191	242	377	486	644	776	852	828	680	508	302	206	6092
50 S	191	433	810	1295	1939	2715	3567	4395	5075	5584	5886	6092	6092

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