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Period of Record General Climate Summary - Heating Degree Days

Station:(212881) FOREST LAKE 5 NE
From Year=1958 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	1620	1310	1060	570	239	53	9	24	181	497	946	1437	7947
60	1465	1169	905	428	134	15	1	5	94	356	796	1282	6651
57	1372	1084	813	349	86	6	0	1	57	278	707	1189	5942
55	1310	1028	752	298	61	3	0	0	39	231	647	1127	5497
50	1155	886	602	186	22	0	0	0	12	129	502	972	4467

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