ONTONAGON 6 SE, MICHIGAN

Period of Record General Climate Summary - Heating Degree Days

Station:(206220) ONTONAGON 6 SE
From Year=1977 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	1495	1296	1115	696	370	143	54	59	236	572	938	1342	8316
60	1340	1155	961	551	244	66	14	15	134	424	788	1187	6879
57	1247	1070	869	466	179	37	4	5	86	340	699	1094	6096
55	1185	1013	807	411	141	23	1	2	61	287	640	1032	5604
50	1030	872	656	283	66	5	0	0	19	170	494	877	4473

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