RANKIN, TEXAS

Period of Record General Climate Summary - Growing Degree Days

Station:(417431) RANKIN
From Year=1948 To Year=1984
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	226	289	574	812	1043	1205	1321	1270	1053	807	459	264	9322
40 S	226	515	1088	1900	2943	4148	5469	6738	7791	8599	9057	9322	9322
45 M	125	176	427	662	888	1055	1166	1115	903	653	325	152	7646
45 S	125	301	728	1391	2279	3333	4499	5614	6517	7170	7494	7646	7646
50 M	56	91	292	514	733	905	1011	960	753	500	206	72	6092
50 S	56	147	439	953	1686	2590	3601	4561	5314	5814	6020	6092	6092
55 M	19	38	174	369	578	755	856	805	603	352	110	26	4684
55 S	19	57	230	600	1178	1932	2788	3593	4196	4548	4658	4684	4684
60 M	4	12	86	235	426	605	701	650	455	217	44	5	3438
60 S	4	16	101	336	762	1366	2067	2717	3172	3389	3433	3438	3438

Corn Growing Degree Days
50 M	174	210	379	524	681	788	862	836	698	522	293	192	6160
50 S	174	384	763	1287	1968	2756	3619	4455	5153	5675	5968	6160	6160

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