DEER LODGE 3 W, MONTANA

Period of Record General Climate Summary - Growing Degree Days

Station:(242275) DEER LODGE 3 W
From Year=1959 To Year=2006
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	2	6	24	96	257	468	668	639	355	138	18	3	2676
40 S	2	8	32	128	385	854	1522	2161	2516	2654	2672	2676	2676
45 M	0	1	6	40	138	322	513	485	226	60	4	0	1794
45 S	0	1	6	46	184	506	1019	1504	1730	1790	1794	1794	1794
50 M	0	0	1	12	58	192	360	334	120	18	0	0	1094
50 S	0	0	1	13	70	262	623	956	1076	1094	1094	1094	1094
55 M	0	0	0	2	17	93	217	195	48	3	0	0	573
55 S	0	0	0	2	19	112	328	523	571	573	573	573	573
60 M	0	0	0	0	3	32	98	86	13	0	0	0	233
60 S	0	0	0	0	3	35	133	220	232	233	233	233	233

Corn Growing Degree Days
50 M	2	6	32	105	206	323	462	453	295	152	21	3	2058
50 S	2	8	40	144	350	673	1135	1588	1883	2035	2056	2058	2058

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 Jul 28, 2006
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