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Period of Record General Climate Summary - Growing Degree Days

Station:(214861) LONG PRAIRIE
From Year=1893 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	1	22	171	487	753	925	863	555	246	27	1	4050
40 S	0	1	22	193	680	1434	2359	3222	3777	4023	4049	4050	4050
45 M	0	0	9	95	344	604	770	708	410	144	9	0	3092
45 S	0	0	9	103	447	1050	1821	2529	2939	3083	3092	3092	3092
50 M	0	0	3	46	219	455	615	553	278	74	2	0	2245
50 S	0	0	3	49	268	723	1338	1891	2169	2243	2245	2245	2245
55 M	0	0	1	20	122	312	461	400	167	31	0	0	1514
55 S	0	0	1	21	143	455	916	1315	1482	1513	1514	1514	1514
60 M	0	0	0	7	58	185	308	255	86	10	0	0	910
60 S	0	0	0	7	65	250	559	814	900	910	910	910	910

Corn Growing Degree Days
50 M	0	0	17	119	303	475	605	558	342	154	19	1	2593
50 S	0	1	17	136	439	914	1519	2077	2419	2573	2592	2593	2593

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