FT RIPLEY, MINNESOTA

Period of Record General Climate Summary - Growing Degree Days

Station:(212904) FORT RIPLEY
From Year=1889 To Year=1990
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	19	156	424	711	888	801	536	213	15	0	3762
40 S	0	0	19	174	598	1309	2197	2998	3534	3747	3762	3762	3762
45 M	0	0	7	83	289	561	733	646	393	124	4	0	2839
45 S	0	0	7	90	378	939	1672	2318	2711	2835	2839	2839	2839
50 M	0	0	2	39	173	412	578	491	262	62	1	0	2021
50 S	0	0	2	41	215	627	1205	1696	1958	2020	2021	2021	2021
55 M	0	0	1	16	89	275	424	341	155	25	0	0	1325
55 S	0	0	1	17	106	381	805	1145	1300	1325	1325	1325	1325
60 M	0	0	0	5	38	161	276	204	78	9	0	0	772
60 S	0	0	0	5	43	205	481	685	764	772	772	772	772

Corn Growing Degree Days
50 M	0	0	16	113	270	449	575	512	332	144	13	0	2425
50 S	0	0	16	129	399	848	1423	1935	2267	2411	2425	2425	2425

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