CRYSTAL FALLS 6 NE, MICHIGAN

Period of Record General Climate Summary - Heating Degree Days

Station:(201922) CRYSTAL FALLS WAY DAM
From Year=1948 To Year=1989
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1741	1500	1302	799	435	191	82	134	353	676	1066	1543	9822
60	1586	1359	1147	651	304	98	27	56	224	525	916	1388	8281
57	1493	1274	1054	563	234	59	11	28	159	437	826	1295	7434
55	1431	1218	992	507	193	39	5	16	122	381	766	1233	6902
50	1276	1076	837	370	106	11	0	2	53	252	616	1078	5678

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