MARION, SOUTH DAKOTA

Period of Record General Climate Summary - Growing Degree Days

Station:(395228) MARION
From Year=1901 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	1	5	63	262	600	859	1064	995	683	352	55	3	4942
40 S	1	6	69	331	931	1790	2854	3849	4532	4884	4939	4942	4942
45 M	0	1	29	161	451	709	909	840	536	230	22	1	3888
45 S	0	1	30	191	642	1351	2260	3100	3636	3866	3888	3888	3888
50 M	0	0	11	89	312	560	754	685	394	132	6	0	2943
50 S	0	0	11	100	412	972	1726	2410	2805	2937	2943	2943	2943
55 M	0	0	4	42	194	413	599	530	265	64	1	0	2112
55 S	0	0	4	46	240	653	1252	1782	2046	2111	2112	2112	2112
60 M	0	0	1	16	104	275	444	378	158	25	0	0	1401
60 S	0	0	1	17	121	397	841	1219	1376	1401	1401	1401	1401

Corn Growing Degree Days
50 M	2	7	53	179	373	548	699	651	430	234	47	4	3227
50 S	2	9	62	242	615	1163	1862	2512	2942	3176	3223	3227	3227

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