HIBBING CHISHOLM HIBBING AP, MINNESOTA

Period of Record General Climate Summary - Heating Degree Days

Station:(213730) HIBBING FAA AIRPORT
From Year=1962 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	1837	1515	1269	778	431	172	67	120	360	714	1161	1650	10074
60	1682	1373	1114	629	292	78	17	44	232	561	1011	1495	8530
57	1589	1289	1021	540	217	41	6	19	167	471	921	1402	7683
55	1527	1232	959	482	173	24	2	10	128	413	861	1340	7151
50	1372	1091	805	343	84	5	0	1	56	277	712	1185	5929

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