ONTONAGON, MICHIGAN

Period of Record General Climate Summary - Heating Degree Days

Station:(206210) ONTONAGON
From Year=1948 To Year=1977
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1524	1352	1223	755	441	187	71	95	273	516	933	1351	8721
60	1369	1211	1068	608	308	96	22	35	161	373	783	1196	7231
57	1276	1126	975	522	236	58	9	16	107	294	693	1103	6416
55	1214	1070	913	466	193	40	4	8	77	245	634	1041	5905
50	1059	929	759	335	103	11	1	1	28	140	487	886	4740

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