MARSHALL, MINNESOTA

Period of Record General Climate Summary - Growing Degree Days

Station:(215204) MARSHALL
From Year=1935 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	3	45	224	570	846	1029	957	644	324	52	3	4699
40 S	1	4	49	274	844	1690	2719	3676	4320	4644	4696	4699	4699
45 M	0	1	21	135	422	696	874	802	497	208	22	1	3679
45 S	0	1	22	157	579	1275	2149	2952	3448	3656	3679	3679	3679
50 M	0	0	9	72	288	547	719	647	356	120	7	0	2766
50 S	0	0	9	82	369	916	1635	2283	2638	2759	2766	2766	2766
55 M	0	0	3	34	175	401	564	493	231	59	2	0	1961
55 S	0	0	3	37	211	612	1176	1669	1900	1959	1961	1961	1961
60 M	0	0	1	13	92	264	410	342	133	24	0	0	1279
60 S	0	0	1	14	105	369	779	1121	1254	1278	1279	1279	1279

Corn Growing Degree Days
50 M	1	3	31	141	341	541	685	628	394	195	34	2	2997
50 S	1	4	35	176	517	1058	1743	2371	2766	2961	2995	2997	2997

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