HATFIELD, WISCONSIN

Period of Record General Climate Summary - Heating Degree Days

Station:(473471) HATFIELD DAM
From Year=1908 To Year=2009
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1604	1345	1097	613	288	84	22	46	208	521	959	1420	8208
60	1449	1204	942	470	175	31	4	12	113	377	809	1265	6852
57	1356	1119	850	388	120	14	1	4	72	298	720	1172	6115
55	1294	1063	789	336	90	7	0	2	51	250	660	1110	5652
50	1139	922	638	218	36	1	0	0	18	147	514	955	4588

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