LEWELLEN, NEBRASKA

Period of Record General Climate Summary - Growing Degree Days

Station:(254755) LEWELLEN
From Year=1994 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	7	8	168	283	593	898	1112	1012	657	311	83	5	5136
40 S	7	15	184	466	1059	1956	3069	4081	4738	5048	5131	5136	5136
45 M	1	1	89	165	441	748	957	857	508	191	31	1	3990
45 S	1	2	91	256	698	1445	2402	3259	3767	3959	3989	3990	3990
50 M	0	0	35	86	301	598	802	702	361	103	9	0	2997
50 S	0	0	35	121	422	1019	1822	2524	2885	2988	2997	2997	2997
55 M	0	0	10	32	180	448	647	547	228	50	0	0	2143
55 S	0	0	10	42	222	670	1317	1864	2092	2142	2143	2143	2143
60 M	0	0	1	8	89	302	493	392	123	20	0	0	1427
60 S	0	0	1	9	98	400	893	1285	1407	1427	1427	1427	1427

Corn Growing Degree Days
50 M	18	22	169	213	377	576	721	664	421	233	108	16	3539
50 S	18	40	209	422	800	1375	2097	2761	3182	3416	3524	3539	3539

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