FRIONA, TEXAS

Period of Record General Climate Summary - Growing Degree Days

Station:(413368) FRIONA
From Year=1927 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	71	111	271	484	769	1011	1145	1093	851	555	227	81	6667
40 S	71	182	452	936	1705	2716	3861	4953	5804	6359	6586	6667	6667
45 M	25	50	159	345	615	861	990	938	701	409	129	31	5252
45 S	25	75	234	579	1194	2055	3045	3982	4683	5092	5221	5252	5252
50 M	6	17	78	219	463	711	835	783	553	271	58	8	4003
50 S	6	23	101	320	784	1495	2329	3112	3665	3937	3995	4003	4003
55 M	1	4	29	117	319	562	680	628	408	154	19	1	2921
55 S	1	4	34	151	470	1032	1712	2339	2748	2902	2920	2921	2921
60 M	0	0	7	47	191	413	525	473	270	68	3	0	1997
60 S	0	0	7	54	245	659	1183	1656	1926	1994	1997	1997	1997

Corn Growing Degree Days
50 M	91	118	222	333	483	647	750	717	542	364	182	93	4542
50 S	91	208	430	763	1247	1894	2644	3361	3903	4267	4449	4542	4542

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