ISABELLA 1 W, MINNESOTA

Period of Record General Climate Summary - Heating Degree Days

Station:(214068) ISABELLA 1 W
From Year=1957 To Year=2005
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1869	1541	1293	834	469	209	97	131	362	719	1202	1671	10399
60	1714	1400	1138	684	329	109	31	51	234	568	1052	1516	8827
57	1621	1316	1045	595	253	65	13	25	168	480	962	1423	7966
55	1559	1259	983	536	207	43	6	13	131	423	902	1361	7425
50	1404	1118	828	395	113	12	0	2	59	289	753	1206	6180

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