WESSINGTON SPRINGS, SOUTH DAKOTA

Period of Record General Climate Summary - Growing Degree Days

Station:(399070) WESSINGTON SPRINGS
From Year=1893 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	4	11	70	263	588	853	1073	1009	700	333	66	5	4976
40 S	4	14	84	348	936	1789	2862	3871	4571	4905	4971	4976	4976
45 M	1	3	34	163	438	703	918	854	551	214	30	1	3909
45 S	1	3	37	200	637	1340	2259	3113	3665	3878	3908	3909	3909
50 M	0	0	14	89	299	554	763	700	408	120	10	0	2958
50 S	0	0	15	103	402	956	1719	2419	2827	2947	2957	2958	2958
55 M	0	0	5	42	181	406	608	546	277	58	3	0	2126
55 S	0	0	5	46	227	634	1242	1788	2064	2123	2126	2126	2126
60 M	0	0	1	16	92	268	454	394	167	23	1	0	1416
60 S	0	0	1	17	109	377	831	1225	1392	1415	1416	1416	1416

Corn Growing Degree Days
50 M	3	9	51	165	349	544	711	663	429	198	43	5	3171
50 S	3	12	63	228	577	1121	1832	2495	2925	3123	3166	3171	3171

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