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Period of Record General Climate Summary - Heating Degree Days

Station:(211198) CALEDONIA
From Year=1893 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	1578	1336	1061	589	271	63	15	34	203	521	941	1407	8020
60	1423	1195	907	447	159	20	2	7	109	377	791	1252	6689
57	1330	1110	815	366	106	8	0	2	68	298	702	1159	5966
55	1268	1054	754	315	78	4	0	1	48	250	643	1097	5512
50	1113	913	605	201	31	0	0	0	16	147	497	942	4465

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