WINONA, MINNESOTA

Period of Record General Climate Summary - Heating Degree Days

Station:(219067) WINONA
From Year=1893 To Year=2011
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1526	1267	1006	522	219	42	6	18	145	446	878	1341	7417
60	1371	1126	852	385	121	12	1	3	70	310	729	1186	6166
57	1278	1041	760	310	78	4	0	1	41	238	640	1093	5484
55	1216	984	700	263	56	2	0	0	27	195	582	1031	5056
50	1061	843	551	160	20	0	0	0	8	108	440	877	4067

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