date! ,

Period of Record General Climate Summary - Growing Degree Days

Station:(474953) MADELINE ISLAND
From Year=1944 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	0	11	78	289	564	805	790	523	232	30	1	3323
40 S	0	0	11	90	379	942	1747	2537	3060	3292	3322	3323	3323
45 M	0	0	3	34	166	415	650	635	376	126	9	0	2414
45 S	0	0	3	37	204	619	1268	1904	2280	2405	2414	2414	2414
50 M	0	0	1	13	82	274	495	480	240	56	2	0	1643
50 S	0	0	1	14	95	369	864	1344	1585	1641	1643	1643	1643
55 M	0	0	0	4	32	155	341	327	131	19	0	0	1011
55 S	0	0	0	4	36	192	533	860	991	1010	1011	1011	1011
60 M	0	0	0	1	10	71	199	186	58	5	0	0	530
60 S	0	0	0	1	11	82	281	467	525	530	530	530	530

Corn Growing Degree Days
50 M	0	0	9	56	174	328	502	490	290	116	13	0	1980
50 S	0	0	9	66	240	568	1070	1559	1850	1966	1979	1980	1980

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