CARLSBAD CAVERN CITY AP, NEW MEXICO

Period of Record General Climate Summary - Growing Degree Days

Station:(291475) CARLSBAD FAA AIRPORT
From Year=1942 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	178	256	471	712	1010	1218	1306	1259	1016	730	356	180	8692
40 S	178	434	905	1617	2627	3845	5151	6410	7426	8156	8512	8692	8692
45 M	90	150	330	564	855	1068	1151	1104	866	576	229	91	7073
45 S	90	240	570	1134	1988	3056	4207	5311	6177	6753	6982	7073	7073
50 M	36	72	203	419	700	918	996	949	716	425	124	37	5595
50 S	36	108	312	730	1430	2348	3344	4293	5009	5434	5559	5595	5595
55 M	11	27	103	282	546	768	841	794	567	282	52	12	4285
55 S	11	37	141	423	969	1736	2577	3372	3939	4221	4273	4285	4285
60 M	2	7	40	163	395	618	686	639	420	157	14	3	3143
60 S	2	9	49	212	607	1224	1910	2550	2969	3126	3140	3143	3143

Corn Growing Degree Days
50 M	158	200	329	460	636	762	843	819	659	460	253	157	5737
50 S	158	357	687	1147	1783	2545	3388	4207	4866	5326	5580	5737	5737

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