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Period of Record General Climate Summary - Heating Degree Days

Station:(200770) BIG BAY
From Year=1945 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	1482	1285	1128	767	450	182	60	77	249	578	935	1314	8508
60	1327	1144	974	621	318	94	18	23	140	429	785	1159	7032
57	1234	1059	882	534	246	56	7	8	90	344	696	1066	6223
55	1172	1002	820	478	202	37	3	4	63	291	637	1004	5713
50	1017	861	667	343	109	9	0	0	21	172	490	849	4539

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