FT CARSON BUTTS AAF, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(053002) FORT CARSON
From Year=1981 To Year=2003
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	37	43	134	288	542	809	987	938	683	394	103	29	4987
40 S	37	80	214	502	1044	1853	2840	3778	4461	4855	4958	4987	4987
45 M	10	12	57	173	392	659	832	783	536	260	47	9	3770
45 S	10	23	80	253	644	1303	2135	2918	3454	3714	3761	3770	3770
50 M	1	2	17	89	252	509	677	628	392	143	15	2	2726
50 S	1	4	20	109	361	870	1547	2175	2567	2710	2725	2726	2726
55 M	0	0	3	35	134	362	522	473	255	58	2	0	1844
55 S	0	0	3	38	171	533	1055	1528	1784	1842	1844	1844	1844
60 M	0	0	0	9	52	225	367	320	137	15	0	0	1126
60 S	0	0	0	9	61	286	654	974	1111	1126	1126	1126	1126

Corn Growing Degree Days
50 M	47	53	111	205	330	507	632	607	432	265	89	31	3310
50 S	47	100	212	417	747	1254	1886	2493	2925	3190	3279	3310	3310

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