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Period of Record General Climate Summary - Growing Degree Days

Station:(478827) VIROQUA 2 NW
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	0	2	45	219	530	793	963	895	614	308	56	3	4427
40 S	0	2	47	266	795	1588	2552	3447	4060	4369	4425	4427	4427
45 M	0	0	21	129	383	643	808	740	467	195	24	1	3411
45 S	0	0	22	150	533	1176	1985	2725	3191	3387	3410	3411	3411
50 M	0	0	9	68	251	494	653	585	327	108	8	0	2505
50 S	0	0	9	77	329	822	1476	2061	2388	2497	2505	2505	2505
55 M	0	0	4	32	145	349	499	431	206	50	2	0	1717
55 S	0	0	4	35	180	529	1028	1459	1665	1715	1717	1717	1717
60 M	0	0	1	12	72	217	346	283	113	18	0	0	1063
60 S	0	0	1	14	86	302	648	931	1044	1062	1063	1063	1063

Corn Growing Degree Days
50 M	0	1	29	136	317	503	637	582	373	179	31	1	2789
50 S	0	1	30	165	483	986	1623	2205	2578	2757	2788	2789	2789

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