GRAND LAKE 1 NW, COLORADO

Period of Record General Climate Summary - Heating Degree Days

Station:(053496) GRAND LAKE 1 NW
From Year=1907 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	1493	1284	1209	916	667	399	241	290	480	786	1158	1451	10373
60	1338	1143	1054	766	512	251	101	141	331	631	1008	1296	8572
57	1245	1058	961	676	420	168	43	70	243	538	918	1203	7543
55	1183	1002	899	616	358	121	20	37	188	476	858	1141	6899
50	1028	860	744	466	210	40	2	4	76	322	708	986	5446

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