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Period of Record General Climate Summary - Growing Degree Days

Station:(216654) PRESTON
From Year=1952 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	3	47	220	527	793	965	884	599	290	53	3	4383
40 S	0	3	50	270	797	1590	2555	3439	4038	4327	4380	4383	4383
45 M	0	1	23	128	380	643	810	729	452	178	23	1	3367
45 S	0	1	24	152	532	1175	1985	2714	3166	3344	3366	3367	3367
50 M	0	0	11	67	248	493	655	574	312	97	8	0	2467
50 S	0	0	11	78	327	820	1475	2049	2361	2459	2467	2467	2467
55 M	0	0	4	31	143	348	500	420	193	46	2	0	1687
55 S	0	0	4	35	178	526	1026	1446	1639	1685	1687	1687	1687
60 M	0	0	1	12	70	216	347	273	102	17	0	0	1039
60 S	0	0	1	14	84	299	647	919	1022	1039	1039	1039	1039

Corn Growing Degree Days
50 M	0	2	33	149	331	511	640	579	383	192	37	2	2859
50 S	0	2	35	184	515	1026	1665	2244	2627	2820	2857	2859	2859

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