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Period of Record General Climate Summary - Heating Degree Days

Station:(204104) IRONWOOD DAILY GLOBE
From Year=1901 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	1655	1427	1230	753	403	152	57	92	285	616	1038	1484	9192
60	1500	1285	1076	607	274	74	16	34	173	468	888	1329	7723
57	1407	1201	983	521	207	43	6	16	119	383	799	1236	6921
55	1345	1144	921	466	168	28	2	8	90	330	739	1174	6415
50	1190	1003	768	335	89	8	0	1	37	212	591	1019	5253

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