CAPITAN, NEW MEXICO

Period of Record General Climate Summary - Heating Degree Days

Station:(291440) CAPITAN
From Year=1909 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	886	731	645	407	187	28	4	14	112	374	673	906	4969
60	731	589	490	264	80	4	0	1	31	225	523	751	3691
57	638	505	399	186	41	1	0	0	11	150	433	658	3023
55	576	449	338	141	24	0	0	0	5	109	374	596	2615
50	422	312	200	61	5	0	0	0	1	43	236	443	1723

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