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Period of Record General Climate Summary - Heating Degree Days

Station:(325186) LIDGERWOOD 1 SSW
From Year=1979 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	1650	1407	1145	603	304	60	9	24	188	575	927	1475	8367
60	1495	1266	990	458	186	18	2	4	95	433	777	1320	7044
57	1402	1181	898	376	131	7	1	1	56	352	687	1227	6318
55	1340	1124	837	325	101	3	0	0	38	300	627	1165	5861
50	1185	983	687	211	47	0	0	0	11	184	482	1010	4800

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