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Period of Record General Climate Summary - Heating Degree Days

Station:(218227) THEILMAN
From Year=1938 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	1581	1301	1023	561	258	56	13	29	187	506	929	1404	7847
60	1426	1160	869	419	149	17	2	6	98	365	779	1249	6539
57	1333	1075	777	340	97	7	0	1	59	287	690	1156	5824
55	1271	1018	717	290	70	4	0	0	40	240	631	1094	5376
50	1116	877	569	179	26	0	0	0	12	138	486	939	4343

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