WINDOM, MINNESOTA

Period of Record General Climate Summary - Growing Degree Days

Station:(219033) WINDOM
From Year=1905 To Year=2012
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	0	3	51	237	566	841	1023	944	648	324	55	3	4694
40 S	0	3	54	291	857	1698	2721	3664	4312	4636	4691	4694	4694
45 M	0	1	24	145	418	691	868	789	500	208	22	1	3667
45 S	0	1	25	169	587	1278	2146	2935	3435	3644	3666	3667	3667
50 M	0	0	10	79	284	542	713	634	360	118	7	0	2746
50 S	0	0	10	90	373	915	1628	2262	2621	2739	2746	2746	2746
55 M	0	0	4	38	172	395	558	479	234	57	2	0	1939
55 S	0	0	4	42	214	609	1167	1646	1880	1937	1939	1939	1939
60 M	0	0	1	15	89	259	404	329	132	23	0	0	1252
60 S	0	0	1	16	105	364	768	1097	1229	1252	1252	1252	1252

Corn Growing Degree Days
50 M	1	3	38	156	348	539	681	621	405	207	39	2	3040
50 S	1	4	42	198	546	1085	1767	2388	2792	2999	3038	3040	3040

M = Monthly Data
S - Running sum of monthly data.
Growing Degree Day units are computed as the difference between the daily average temperature and the base temperature. (Daily Ave. Temp. - Base Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is above the base temperature. Negative numbers are discarded. Example: If the days high temperature was 95 and the low temperature was 51, the base 60 heating degree day units is ((95 + 51) / 2) - 60 = 13. This is done for each day of the month and summed.
Corn Growing Degree Day units have the limitations that the maximum daily temperatures greater than 86 F are set to 86 F and minimums less than 50 F are set to 50 F.
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