HOLLY, COLORADO

Period of Record General Climate Summary - Heating Degree Days

Station:(054076) HOLLY
From Year=1894 To Year=2009
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1095	864	700	376	144	18	1	3	67	319	721	1042	5350
60	940	723	547	246	70	5	0	0	29	196	571	887	4216
57	847	638	458	181	43	2	0	0	17	138	481	794	3601
55	785	582	401	144	30	1	0	0	11	107	423	732	3217
50	631	444	271	75	11	0	0	0	4	52	287	578	2352

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