OWATONNA, MINNESOTA

Period of Record General Climate Summary - Heating Degree Days

Station:(216287) OWATONNA
From Year=1961 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	1603	1305	1042	564	242	44	8	23	164	488	936	1421	7841
60	1448	1164	888	424	139	13	1	4	83	349	786	1266	6566
57	1355	1079	797	344	92	6	0	1	49	273	697	1173	5866
55	1293	1023	736	295	66	3	0	0	33	227	638	1111	5425
50	1138	882	588	183	26	0	0	0	10	131	494	956	4408

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