HERMAN, MICHIGAN

Period of Record General Climate Summary - Heating Degree Days

Station:(203744) HERMAN
From Year=1968 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	1637	1398	1251	803	442	194	94	130	334	678	1062	1480	9504
60	1482	1257	1096	656	310	103	33	54	213	527	912	1325	7969
57	1389	1173	1003	570	239	64	15	27	152	440	822	1232	7126
55	1327	1116	942	514	197	44	8	15	117	384	762	1170	6596
50	1172	975	788	378	108	13	1	3	52	255	614	1015	5373

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