CARLYLE 12 NW, MONTANA

Period of Record General Climate Summary - Growing Degree Days

Station:(241518) CARLYLE 12 NW
From Year=1962 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	3	7	40	167	429	688	920	896	548	247	41	4	3991
40 S	3	10	50	217	646	1333	2254	3150	3698	3946	3987	3991	3991
45 M	1	1	14	88	290	538	765	741	407	145	15	0	3005
45 S	1	2	16	104	394	931	1697	2438	2845	2990	3004	3005	3005
50 M	0	0	4	41	172	390	610	587	276	72	4	0	2156
50 S	0	0	4	45	217	607	1217	1804	2080	2152	2156	2156	2156
55 M	0	0	1	15	86	250	456	434	168	29	1	0	1440
55 S	0	0	1	16	103	353	809	1243	1410	1439	1440	1440	1440
60 M	0	0	0	4	34	135	307	289	88	9	0	0	867
60 S	0	0	0	4	39	174	481	770	858	867	867	867	867

Corn Growing Degree Days
50 M	1	6	36	127	265	416	584	564	341	166	31	3	2539
50 S	1	7	43	171	436	851	1435	1999	2340	2506	2537	2539	2539

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