GRANT, COLORADO

Period of Record General Climate Summary - Heating Degree Days

Station:(053530) GRANT
From Year=1963 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	1344	1174	1095	849	602	326	172	237	443	742	1072	1338	9395
60	1189	1033	940	699	448	184	52	97	294	587	922	1183	7628
57	1096	948	847	609	356	115	17	41	209	494	832	1090	6654
55	1034	891	785	549	296	79	7	20	158	432	772	1028	6053
50	879	750	630	400	163	26	1	3	66	283	622	873	4695

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