HAYDEN, COLORADO

Period of Record General Climate Summary - Heating Degree Days

Station:(053867) HAYDEN
From Year=1909 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	1467	1215	1057	678	411	164	26	50	262	600	1000	1368	8300
60	1312	1074	902	528	263	69	3	10	137	446	850	1213	6807
57	1219	989	809	439	184	36	1	4	84	354	760	1120	5999
55	1157	933	747	380	139	22	0	2	58	295	700	1058	5493
50	1002	792	593	245	61	5	0	0	22	167	550	903	4339

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