VAIL, COLORADO

Period of Record General Climate Summary - Heating Degree Days

Station:(058575) VAIL
From Year=1985 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	1475	1250	1104	846	595	339	175	223	449	792	1167	1479	9892
60	1320	1108	949	696	440	194	57	86	301	637	1017	1324	8127
57	1227	1024	856	606	348	119	20	34	216	544	927	1231	7151
55	1165	967	794	546	289	80	9	16	164	482	867	1169	6548
50	1010	826	639	396	158	25	2	2	68	330	717	1014	5186

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