ARAPAHOE 14N, COLORADO

Period of Record General Climate Summary - Heating Degree Days

Station:(050301) ARAPAHO 14 N
From Year=1992 To Year=2007
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1098	930	824	548	259	59	6	16	138	414	853	1062	6207
60	943	790	671	405	149	20	1	4	71	283	703	907	4946
57	850	706	580	326	99	10	0	1	44	212	614	814	4256
55	788	650	521	278	72	7	0	1	31	172	555	752	3826
50	635	512	384	174	28	3	0	0	11	96	416	599	2857

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