LAKE PARK, IOWA

Period of Record General Climate Summary - Growing Degree Days

Station:(134561) LAKE PARK
From Year=1912 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	2	44	227	572	838	1023	948	643	327	55	2	4682
40 S	1	3	47	275	846	1685	2707	3655	4298	4624	4679	4682	4682
45 M	0	0	20	136	423	688	868	793	496	210	22	1	3657
45 S	0	1	21	157	580	1268	2136	2929	3424	3634	3656	3657	3657
50 M	0	0	8	72	288	539	713	638	355	119	6	0	2738
50 S	0	0	8	80	368	907	1620	2257	2612	2731	2738	2738	2738
55 M	0	0	2	33	176	392	558	483	229	56	1	0	1930
55 S	0	0	2	35	211	603	1161	1644	1873	1929	1930	1930	1930
60 M	0	0	1	13	91	255	404	332	130	22	0	0	1247
60 S	0	0	1	13	104	359	763	1095	1225	1247	1247	1247	1247

Corn Growing Degree Days
50 M	1	3	32	146	342	534	681	620	396	201	37	2	2995
50 S	1	4	36	182	524	1057	1739	2358	2754	2955	2993	2995	2995

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