CHACO CANYON NATL MON, NEW MEXICO

Period of Record General Climate Summary - Heating Degree Days

Station:(291647) CHACO CANYON NATL MON
From Year=1922 To Year=2006
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1140	883	778	507	263	48	1	5	107	451	820	1134	6139
60	985	742	623	359	139	12	0	0	37	300	670	979	4847
57	892	657	531	274	85	4	0	0	17	216	580	886	4143
55	830	601	469	222	59	2	0	0	10	167	521	824	3704
50	675	460	319	116	19	0	0	0	2	76	373	669	2709

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 Jul 28, 2006
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