DILLON 1 E, COLORADO

Period of Record General Climate Summary - Heating Degree Days

Station:(052281) DILLON 1 E
From Year=1893 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	1546	1339	1289	973	712	446	288	334	525	846	1186	1489	10972
60	1391	1198	1134	823	557	297	140	182	375	691	1036	1334	9157
57	1298	1113	1041	733	464	210	66	100	286	598	946	1241	8097
55	1236	1057	979	673	402	157	33	58	228	536	886	1179	7424
50	1081	915	824	523	251	59	3	7	104	382	736	1024	5910

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