RAND, COLORADO

Period of Record General Climate Summary - Heating Degree Days

Station:(056820) RAND
From Year=1988 To Year=1998
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1456	1266	1170	915	640	383	278	286	472	827	1177	1459	10329
60	1301	1125	1015	765	485	235	131	136	323	672	1027	1304	8519
57	1208	1041	922	675	392	155	63	64	238	579	937	1211	7484
55	1146	984	860	615	331	110	33	32	184	517	877	1149	6837
50	991	843	705	466	186	35	5	4	81	364	727	994	5401

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