ASPEN 1 SW, COLORADO

Period of Record General Climate Summary - Heating Degree Days

Station:(050372) ASPEN 1 SW
From Year=1980 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	1334	1126	1006	769	511	244	95	127	330	667	1009	1326	8542
60	1179	985	851	619	358	122	23	33	190	512	859	1171	6900
57	1086	900	758	529	271	72	7	11	122	419	769	1078	6022
55	1024	844	696	469	218	49	4	5	86	359	709	1016	5478
50	869	703	541	325	115	15	1	1	34	223	559	861	4245

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