MARQUETTE WSO AP, MICHIGAN

Period of Record General Climate Summary - Heating Degree Days

Station:(205184) MARQUETTE WSO
From Year=1959 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	1612	1411	1261	824	461	193	86	121	325	665	1036	1442	9438
60	1457	1269	1107	677	328	103	28	49	205	515	886	1287	7911
57	1364	1185	1014	590	256	63	11	22	144	428	796	1194	7068
55	1302	1128	952	533	212	44	5	11	109	373	736	1132	6537
50	1147	987	798	395	117	12	0	1	47	244	587	977	5314

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