CARLSBAD CAVERN CITY AP, NEW MEXICO

Period of Record General Climate Summary - Heating Degree Days

Station:(291475) CARLSBAD FAA AIRPORT
From Year=1942 To Year=2012
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	663	482	322	111	17	0	0	0	12	112	410	650	2780
60	510	347	196	52	5	0	0	0	4	48	271	497	1930
57	421	271	137	31	2	0	0	0	2	27	200	408	1500
55	364	225	105	21	1	0	0	0	1	18	159	351	1246
50	235	129	50	7	0	0	0	0	0	6	82	221	730

Heating Degree Day units are computed as the difference between the base temperature and the daily average temperature. (Base Temp. - Daily Ave. Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is below the base temperature. Negative numbers are discarded. Example: If the days high temperature was 65 and the low temperature was 31, the base 50 heating degree day units is 50 - ((65 + 31) / 2) = 2. This is done for each day of the month and summed.
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