ELK RIVER, MINNESOTA

Period of Record General Climate Summary - Growing Degree Days

Station:(212500) ELK RIVER
From Year=1940 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	0	65	214	581	849	1062	948	645	292	57	0	4713
40 S	1	1	66	279	861	1710	2771	3719	4364	4655	4713	4713	4713
45 M	0	0	37	122	430	699	907	793	495	175	23	0	3680
45 S	0	0	37	159	589	1288	2195	2988	3482	3657	3680	3680	3680
50 M	0	0	19	56	287	549	752	638	348	94	7	0	2750
50 S	0	0	19	75	362	911	1663	2301	2649	2742	2750	2750	2750
55 M	0	0	10	20	168	402	597	483	219	49	2	0	1949
55 S	0	0	10	30	198	600	1196	1679	1898	1947	1949	1949	1949
60 M	0	0	3	5	82	260	442	330	119	23	0	0	1264
60 S	0	0	3	9	90	350	793	1122	1241	1264	1264	1264	1264

Corn Growing Degree Days
50 M	1	0	42	128	340	541	724	627	382	157	31	0	2972
50 S	1	1	42	170	510	1051	1775	2403	2785	2941	2972	2972	2972

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