BIRD ISLAND, MINNESOTA

Period of Record General Climate Summary - Heating Degree Days

Station:(210783) BIRD ISLAND
From Year=1893 To Year=1976
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1644	1380	1110	592	257	63	10	28	180	493	992	1458	8207
60	1489	1239	956	450	152	22	1	6	94	353	842	1303	6906
57	1396	1154	863	370	102	10	0	1	59	278	752	1210	6196
55	1334	1098	802	319	76	6	0	0	41	232	693	1148	5749
50	1179	957	651	206	31	1	0	0	14	139	546	993	4716

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