RED ROCK, TEXAS

Period of Record General Climate Summary - Growing Degree Days

Station:(417497) RED ROCK
From Year=1965 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	300	364	630	805	1049	1204	1344	1344	1132	890	566	365	9992
40 S	300	664	1294	2099	3148	4352	5696	7040	8172	9062	9628	9992	9992
45 M	194	247	482	655	894	1054	1189	1189	982	735	426	241	8288
45 S	194	441	923	1578	2471	3526	4715	5904	6886	7621	8047	8288	8288
50 M	112	151	343	508	739	904	1034	1034	832	582	300	143	6682
50 S	112	264	606	1114	1853	2757	3791	4825	5657	6239	6539	6682	6682
55 M	57	82	220	365	584	754	879	879	682	433	192	75	5202
55 S	57	139	359	724	1308	2062	2941	3820	4502	4935	5127	5202	5202
60 M	24	37	121	234	430	604	724	724	532	294	106	33	3864
60 S	24	61	181	416	846	1450	2174	2899	3431	3725	3831	3864	3864

Corn Growing Degree Days
50 M	199	233	403	532	715	819	885	872	751	591	365	240	6604
50 S	199	432	835	1367	2082	2901	3786	4657	5408	5999	6364	6604	6604

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