VAIL, COLORADO

Period of Record General Climate Summary - Heating Degree Days

Station:(058575) VAIL
From Year=1985 To Year=2005
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1455	1237	1096	834	582	338	182	223	445	782	1169	1482	9826
60	1300	1096	941	684	427	193	61	86	297	627	1019	1327	8059
57	1207	1011	848	594	335	118	23	34	213	534	929	1234	7081
55	1145	955	786	534	277	79	11	15	162	472	869	1172	6478
50	990	814	631	385	148	24	2	2	68	320	719	1017	5121

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