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Period of Record General Climate Summary - Heating Degree Days

Station:(477092) REST LAKE
From Year=1913 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	1690	1439	1244	755	382	141	58	94	296	630	1056	1521	9307
60	1535	1298	1089	609	254	63	16	32	180	480	906	1366	7830
57	1442	1213	997	523	188	34	5	14	124	395	816	1273	7025
55	1380	1157	935	467	149	22	2	7	93	341	756	1211	6519
50	1225	1016	781	335	74	5	0	1	37	218	608	1056	5356

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