SPARTA, WISCONSIN

Period of Record General Climate Summary - Growing Degree Days

Station:(477997) SPARTA
From Year=1893 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	50	230	557	817	985	919	623	313	60	4	4562
40 S	1	3	53	283	840	1657	2642	3561	4185	4497	4557	4562	4562
45 M	0	1	25	138	409	667	830	764	476	198	26	1	3534
45 S	0	1	26	164	572	1239	2069	2833	3309	3507	3533	3534	3534
50 M	0	0	12	75	273	517	675	609	335	110	9	0	2616
50 S	0	0	12	87	360	877	1552	2161	2496	2607	2616	2616	2616
55 M	0	0	5	36	162	371	520	455	213	53	3	0	1818
55 S	0	0	5	41	203	574	1094	1549	1762	1815	1818	1818	1818
60 M	0	0	2	15	83	237	367	305	119	21	1	0	1150
60 S	0	0	2	17	100	337	704	1009	1128	1149	1150	1150	1150

Corn Growing Degree Days
50 M	0	2	35	153	347	527	655	604	391	197	37	3	2951
50 S	0	2	37	191	538	1065	1720	2324	2715	2911	2948	2951	2951

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