AITKIN, MINNESOTA

Period of Record General Climate Summary - Heating Degree Days

Station:(210059) AITKIN 2 E
From Year=1940 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	1765	1432	1194	707	361	108	38	68	282	607	1064	1569	9196
60	1610	1291	1039	559	231	41	8	20	167	458	914	1414	7753
57	1517	1206	946	472	165	19	2	8	114	373	824	1321	6969
55	1455	1150	884	416	128	11	1	3	84	319	764	1259	6475
50	1300	1009	730	283	57	2	0	0	33	199	616	1104	5335

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