date! ,

Period of Record General Climate Summary - Growing Degree Days

Station:(216822) RED WING DAM 3
From Year=1948 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	60	241	567	833	1010	932	658	307	52	2	4664
40 S	0	1	62	303	870	1703	2713	3646	4303	4610	4662	4664	4664
45 M	0	0	31	142	415	683	855	777	509	194	22	1	3629
45 S	0	0	31	173	588	1271	2126	2903	3413	3607	3628	3629	3629
50 M	0	0	14	71	275	533	700	622	366	110	8	0	2701
50 S	0	0	14	85	360	894	1594	2216	2582	2693	2701	2701	2701
55 M	0	0	6	32	159	387	545	467	238	55	2	0	1892
55 S	0	0	6	38	197	584	1129	1596	1835	1890	1892	1892	1892
60 M	0	0	2	12	79	251	391	315	136	24	0	0	1210
60 S	0	0	2	14	93	344	735	1050	1186	1209	1210	1210	1210

Corn Growing Degree Days
50 M	0	1	38	139	321	533	679	615	399	175	29	2	2929
50 S	0	1	39	177	499	1031	1710	2325	2723	2898	2927	2929	2929

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