BEMIDJI, MINNESOTA

Period of Record General Climate Summary - Growing Degree Days

Station:(210643) BEMIDJI
From Year=1896 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	8	110	411	675	871	790	457	198	16	0	3537
40 S	0	0	8	119	529	1204	2075	2865	3323	3520	3536	3537	3537
45 M	0	0	2	57	277	525	716	635	320	109	5	0	2646
45 S	0	0	2	59	336	861	1577	2213	2532	2641	2646	2646	2646
50 M	0	0	1	26	167	379	561	481	201	51	1	0	1868
50 S	0	0	1	27	194	573	1134	1615	1816	1867	1868	1868	1868
55 M	0	0	0	10	88	243	407	331	111	20	0	0	1209
55 S	0	0	0	10	98	341	748	1079	1189	1209	1209	1209	1209
60 M	0	0	0	3	38	132	260	196	53	6	0	0	688
60 S	0	0	0	3	41	174	434	630	682	688	688	688	688

Corn Growing Degree Days
50 M	0	0	7	85	259	413	559	494	269	120	12	0	2219
50 S	0	1	8	93	352	765	1324	1818	2087	2207	2219	2219	2219

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