MADISON, SOUTH DAKOTA

Period of Record General Climate Summary - Growing Degree Days

Station:(395088) MADISON
From Year=1940 To Year=1962
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	1	2	35	220	525	803	992	966	621	332	41	2	4539
40 S	1	3	38	258	783	1585	2577	3543	4165	4497	4538	4539	4539
45 M	0	0	15	133	381	653	837	811	475	212	14	1	3533
45 S	0	0	15	149	530	1183	2020	2831	3306	3518	3532	3533	3533
50 M	0	0	6	71	252	504	682	656	335	117	2	0	2626
50 S	0	0	6	77	329	833	1515	2171	2507	2624	2626	2626	2626
55 M	0	0	3	31	146	361	527	501	212	52	0	0	1834
55 S	0	0	3	34	180	541	1068	1570	1782	1834	1834	1834	1834
60 M	0	0	1	10	74	230	374	350	116	17	0	0	1171
60 S	0	0	1	10	85	315	689	1039	1154	1171	1171	1171	1171

Corn Growing Degree Days
50 M	1	3	28	154	323	507	651	631	393	226	37	2	2955
50 S	1	4	32	187	510	1017	1667	2298	2691	2916	2954	2955	2955

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