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Period of Record General Climate Summary - Growing Degree Days

Station:(325186) LIDGERWOOD 1 SSW
From Year=1979 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	1	0	36	213	494	797	1031	925	621	249	57	0	4423
40 S	1	1	37	250	744	1541	2572	3496	4117	4367	4423	4423	4423
45 M	0	0	17	123	352	647	876	770	473	148	21	0	3426
45 S	0	0	17	140	492	1138	2014	2784	3256	3405	3426	3426	3426
50 M	0	0	7	59	228	497	721	615	332	81	5	0	2545
50 S	0	0	7	66	295	792	1513	2127	2459	2540	2545	2545	2545
55 M	0	0	3	23	126	350	566	460	209	42	0	0	1779
55 S	0	0	3	26	152	502	1068	1528	1737	1779	1779	1779	1779
60 M	0	0	1	6	57	215	412	309	116	19	0	0	1135
60 S	0	0	1	7	64	279	691	1000	1116	1135	1135	1135	1135

Corn Growing Degree Days
50 M	1	0	28	138	283	498	695	603	373	144	36	0	2799
50 S	1	1	29	167	450	948	1643	2246	2618	2762	2798	2799	2799

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