MONAHANS, TEXAS

Period of Record General Climate Summary - Growing Degree Days

Station:(415999) MONAHANS
From Year=1959 To Year=2009
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	209	292	545	780	1072	1251	1343	1306	1073	804	429	225	9329
40 S	209	500	1045	1825	2897	4148	5491	6797	7871	8675	9104	9329	9329
45 M	109	179	400	631	917	1101	1188	1151	923	650	295	120	7663
45 S	109	287	687	1318	2234	3336	4524	5675	6598	7249	7543	7663	7663
50 M	44	91	264	484	762	951	1033	996	774	499	179	49	6125
50 S	44	135	400	883	1645	2596	3629	4625	5399	5898	6077	6125	6125
55 M	13	35	150	342	607	801	878	841	625	353	89	14	4749
55 S	13	48	198	540	1147	1949	2827	3668	4293	4646	4735	4749	4749
60 M	2	9	66	214	454	651	723	686	478	219	32	2	3536
60 S	2	11	76	290	744	1396	2119	2805	3282	3501	3533	3536	3536

Corn Growing Degree Days
50 M	197	235	384	504	670	787	854	835	690	517	308	198	6180
50 S	197	433	817	1321	1991	2778	3631	4467	5156	5674	5982	6180	6180

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