CRESTONE 2 SE, COLORADO

Period of Record General Climate Summary - Heating Degree Days

Station:(051964) CRESTONE 1 SE
From Year=1982 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	1305	1059	896	638	372	116	26	53	231	584	951	1293	7522
60	1150	918	741	488	228	42	2	8	107	429	801	1138	6050
57	1057	833	648	398	154	19	1	2	57	338	711	1045	5262
55	995	776	586	340	115	10	0	1	35	280	651	983	4771
50	840	635	431	207	49	1	0	0	9	154	501	828	3654

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