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Period of Record General Climate Summary - Heating Degree Days

Station:(213567) HASTINGS DAM 2
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	1568	1297	1060	544	248	48	7	14	155	472	925	1372	7710
60	1413	1155	906	403	138	16	1	2	76	332	776	1217	6435
57	1320	1071	814	324	87	6	0	0	45	256	686	1124	5734
55	1258	1014	753	274	60	3	0	0	30	211	628	1062	5293
50	1103	873	603	165	20	0	0	0	9	115	484	907	4279

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