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Period of Record General Climate Summary - Cooling Degree Days

Station:(440385) BACK BAY WILDLIFE REFUG
From Year=1953 To Year=2012
Cooling Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
55	5	8	39	143	342	576	728	702	540	282	81	14	3460
57	2	4	27	109	284	516	666	640	481	228	56	8	3020
60	0	2	13	69	204	426	573	547	391	155	29	2	2412
65	0	0	3	26	99	279	418	392	245	64	7	0	1534
70	0	0	0	6	35	149	265	240	119	18	1	0	832

Cooling Degree Day units are computed as the difference between the daily average temperature and the base temperature. (Daily Ave. Temp. - Base Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is above the base temperature. Negative numbers are discarded. Example: If the days high temperature was 95 and the low temperature was 51, the base 60 heating degree day units is ((95 + 51) / 2) - 60 = 13. 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