date! ,

Period of Record General Climate Summary - Heating Degree Days

Station:(205178) MARQUETTE
From Year=1948 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	1438	1250	1131	751	454	195	66	71	236	538	904	1281	8315
60	1283	1109	976	603	317	101	19	20	130	392	754	1126	6830
57	1190	1024	884	517	243	61	6	7	81	309	665	1033	6020
55	1128	968	822	461	198	40	2	3	56	257	605	971	5511
50	973	827	668	326	104	9	0	0	15	145	459	816	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