STEPHENSON 8 WNW, MICHIGAN

Period of Record General Climate Summary - Heating Degree Days

Station:(207867) STEPHENSON 8 WNW
From Year=1948 To Year=2008
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1553	1333	1146	693	372	126	48	70	258	570	954	1368	8491
60	1398	1192	991	546	240	53	11	21	146	422	804	1213	7038
57	1305	1108	898	461	173	27	3	8	94	337	714	1120	6249
55	1243	1051	836	406	134	16	1	4	67	285	655	1058	5756
50	1088	910	682	275	62	3	0	0	22	168	508	903	4620

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