GREAT SAND DUNES NAT, COLORADO

Period of Record General Climate Summary - Heating Degree Days

Station:(053541) GREAT SAND DUNES N M
From Year=1950 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	1324	1090	957	683	417	137	37	75	251	588	963	1280	7803
60	1169	949	802	533	269	55	5	13	122	434	813	1125	6288
57	1076	864	709	443	191	28	1	4	68	342	723	1032	5481
55	1014	808	647	384	147	17	0	1	44	283	663	970	4978
50	859	667	492	247	67	3	0	0	13	159	513	815	3835

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