TWENTYNINE PALMS, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(049099) TWENTYNINE PALMS
From Year=1935 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	301	373	575	768	1057	1276	1506	1455	1215	900	501	300	10229
40 S	301	674	1249	2017	3075	4350	5856	7312	8527	9427	9928	10229	10229
45 M	169	238	421	618	902	1126	1351	1300	1065	746	354	164	8455
45 S	169	407	828	1446	2349	3475	4826	6126	7191	7936	8290	8455	8455
50 M	70	124	274	469	747	976	1196	1145	915	591	218	64	6789
50 S	70	194	468	937	1684	2660	3856	5001	5916	6507	6725	6789	6789
55 M	18	47	149	325	592	826	1041	990	765	438	109	15	5315
55 S	18	65	213	538	1131	1957	2998	3988	4753	5191	5300	5315	5315
60 M	2	11	61	197	439	676	886	835	615	293	40	2	4058
60 S	2	13	74	271	710	1386	2272	3108	3723	4015	4056	4058	4058

Corn Growing Degree Days
50 M	203	247	375	487	659	765	902	880	746	567	330	205	6366
50 S	203	450	825	1313	1972	2737	3638	4519	5264	5831	6161	6366	6366

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