MAPLE PLAIN, MINNESOTA

Period of Record General Climate Summary - Growing Degree Days

Station:(215136) MAPLE PLAIN
From Year=1893 To Year=1986
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	1	29	204	548	809	991	917	612	304	39	1	4457
40 S	0	1	30	235	783	1592	2583	3500	4112	4417	4456	4457	4457
45 M	0	0	12	119	400	659	836	762	465	191	14	0	3460
45 S	0	0	13	131	532	1191	2027	2790	3254	3445	3460	3460	3460
50 M	0	0	5	63	267	510	681	607	326	104	4	0	2568
50 S	0	0	5	67	335	844	1526	2133	2460	2564	2568	2568	2568
55 M	0	0	1	29	159	364	527	453	206	49	1	0	1787
55 S	0	0	1	30	189	553	1079	1532	1738	1786	1787	1787	1787
60 M	0	0	0	11	82	229	373	303	114	18	0	0	1131
60 S	0	0	0	11	93	322	695	998	1112	1131	1131	1131	1131

Corn Growing Degree Days
50 M	0	1	20	129	329	512	657	598	368	175	22	1	2813
50 S	0	1	21	149	479	991	1648	2246	2615	2790	2812	2813	2813

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