GREELEY, COLORADO

Period of Record General Climate Summary - Heating Degree Days

Station:(053546) GREELEY
From Year=1893 To Year=1967
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1257	1031	879	534	261	60	7	11	149	479	872	1198	6737
60	1102	890	725	387	145	20	1	2	74	329	722	1043	5441
57	1009	805	632	305	96	10	0	1	46	248	632	950	4733
55	947	749	571	254	70	6	0	0	32	199	572	888	4288
50	792	608	422	150	28	1	0	0	13	103	424	733	3275

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