ISHPEMING, MICHIGAN

Period of Record General Climate Summary - Heating Degree Days

Station:(204127) ISHPEMING
From Year=1898 To Year=1987
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1593	1406	1259	791	441	174	70	109	296	608	1020	1433	9200
60	1438	1265	1104	644	308	88	21	42	181	460	870	1278	7700
57	1345	1181	1011	558	239	52	8	19	124	376	780	1185	6878
55	1283	1124	949	502	197	34	4	10	93	322	720	1123	6362
50	1128	983	795	368	109	9	0	1	37	204	572	968	5175

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