WELLS, MINNESOTA

Period of Record General Climate Summary - Growing Degree Days

Station:(218808) WELLS 1 NW
From Year=1942 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	3	62	233	554	848	1005	920	647	309	60	3	4642
40 S	0	3	65	298	851	1699	2704	3624	4272	4580	4640	4642	4642
45 M	0	0	32	136	405	698	850	765	499	196	27	1	3610
45 S	0	0	33	169	573	1271	2122	2887	3386	3582	3609	3610	3610
50 M	0	0	15	68	270	548	695	610	358	114	10	0	2688
50 S	0	0	15	83	353	901	1597	2206	2565	2678	2688	2688	2688
55 M	0	0	6	31	160	402	540	455	232	60	3	0	1889
55 S	0	0	6	37	197	599	1139	1594	1826	1886	1889	1889	1889
60 M	0	0	2	12	83	263	387	304	132	27	1	0	1210
60 S	0	0	2	14	97	360	747	1050	1183	1209	1210	1210	1210

Corn Growing Degree Days
50 M	1	2	39	143	324	545	677	605	400	189	40	2	2967
50 S	1	2	41	185	509	1054	1730	2336	2736	2925	2964	2967	2967

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