MONTROSE, SOUTH DAKOTA

Period of Record General Climate Summary - Growing Degree Days

Station:(395733) MONTROSE
From Year=1963 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	55	219	553	848	1003	962	606	332	33	0	4611
40 S	0	0	55	274	827	1675	2678	3640	4246	4578	4611	4611	4611
45 M	0	0	26	124	408	698	848	807	459	212	8	0	3589
45 S	0	0	26	150	558	1255	2103	2910	3369	3582	3589	3589	3589
50 M	0	0	11	60	276	548	693	652	323	118	1	0	2682
50 S	0	0	11	71	347	894	1587	2239	2563	2681	2682	2682	2682
55 M	0	0	5	24	167	400	538	498	204	53	0	0	1891
55 S	0	0	5	30	197	597	1136	1634	1838	1891	1891	1891	1891
60 M	0	0	3	7	87	261	389	349	113	19	0	0	1228
60 S	0	0	3	10	97	358	747	1096	1209	1228	1228	1228	1228

Corn Growing Degree Days
50 M	0	1	45	155	358	550	669	627	376	228	36	1	3045
50 S	0	1	46	201	559	1109	1778	2405	2780	3008	3044	3045	3045

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