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Period of Record General Climate Summary - Heating Degree Days

Station:(479345) WISCONSIN RPDS GRND AVE
From Year=1948 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	-99	-99	1174	608	259	99	26	54	167	512	921	1519	-99
60	-99	-99	1020	471	159	40	5	11	84	372	771	1364	-99
57	-99	-99	929	391	106	18	0	2	53	296	681	1271	-99
55	-99	-99	868	341	77	10	0	1	39	249	621	1209	-99
50	-99	-99	715	230	28	2	0	0	13	151	471	1054	-99

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