ANDOVER, SOUTH DAKOTA

Period of Record General Climate Summary - Growing Degree Days

Station:(390198) ANDOVER 8 NNE
From Year=1937 To Year=2005
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	2	37	212	514	771	988	958	613	308	39	2	4444
40 S	0	2	40	251	766	1536	2525	3482	4095	4402	4442	4444	4444
45 M	0	0	16	129	371	621	833	803	467	196	14	0	3451
45 S	0	0	16	145	516	1137	1971	2773	3241	3437	3451	3451	3451
50 M	0	0	6	69	243	472	678	648	332	112	4	0	2565
50 S	0	0	6	76	319	791	1470	2117	2450	2561	2565	2565	2565
55 M	0	0	2	33	141	330	524	494	216	55	1	0	1796
55 S	0	0	2	35	176	506	1030	1524	1740	1795	1796	1796	1796
60 M	0	0	1	13	70	202	371	346	126	23	0	0	1150
60 S	0	0	1	13	83	285	656	1001	1127	1150	1150	1150	1150

Corn Growing Degree Days
50 M	1	2	30	145	319	484	647	619	387	207	31	2	2874
50 S	1	2	32	177	496	980	1627	2246	2633	2840	2872	2874	2874

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