WISDOM, MONTANA

Period of Record General Climate Summary - Growing Degree Days

Station:(249067) WISDOM
From Year=1923 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	1	2	38	173	373	583	504	248	65	3	0	1990
40 S	0	1	3	41	214	587	1170	1674	1922	1987	1990	1990	1990
45 M	0	0	0	10	77	233	428	351	131	18	0	0	1248
45 S	0	0	0	10	87	321	749	1100	1230	1248	1248	1248	1248
50 M	0	0	0	1	24	119	277	205	49	3	0	0	678
50 S	0	0	0	1	25	144	421	626	675	678	678	678	678
55 M	0	0	0	0	4	44	140	83	11	0	0	0	282
55 S	0	0	0	0	4	48	188	271	282	282	282	282	282
60 M	0	0	0	0	1	9	43	17	1	0	0	0	72
60 S	0	0	0	0	1	10	53	70	72	72	72	72	72

Corn Growing Degree Days
50 M	0	1	5	58	173	280	449	428	269	118	9	0	1792
50 S	0	1	6	64	238	518	967	1396	1665	1783	1792	1792	1792

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