date! ,

Period of Record General Climate Summary - Growing Degree Days

Station:(212881) FOREST LAKE 5 NE
From Year=1958 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	2	39	228	572	818	990	922	623	305	49	2	4550
40 S	0	2	41	269	841	1658	2648	3570	4194	4498	4548	4550	4550
45 M	0	0	17	134	421	668	835	767	475	189	19	1	3526
45 S	0	0	17	151	572	1240	2075	2842	3317	3506	3525	3526	3526
50 M	0	0	7	69	283	518	680	612	335	103	6	0	2612
50 S	0	0	7	76	358	876	1556	2168	2503	2606	2612	2612	2612
55 M	0	0	2	31	167	370	525	457	212	49	1	0	1815
55 S	0	0	2	33	200	571	1096	1553	1765	1814	1815	1815	1815
60 M	0	0	0	11	84	233	371	307	117	19	0	0	1143
60 S	0	0	0	12	96	329	700	1007	1124	1143	1143	1143	1143

Corn Growing Degree Days
50 M	0	1	27	146	344	521	663	605	374	172	27	1	2881
50 S	0	1	29	175	518	1039	1702	2307	2681	2853	2880	2881	2881

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