TWO BUTTES, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(058510) TWO BUTTES
From Year=1900 To Year=1972
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	34	53	164	366	657	940	1151	1098	816	497	147	43	5967
40 S	34	87	251	617	1274	2214	3365	4463	5279	5776	5923	5967	5967
45 M	10	17	84	238	505	790	996	943	666	354	68	14	4686
45 S	10	27	111	349	854	1644	2640	3583	4250	4603	4671	4686	4686
50 M	2	4	34	132	358	641	841	788	518	223	23	4	3569
50 S	2	6	40	172	531	1171	2013	2801	3319	3542	3565	3569	3569
55 M	0	1	10	58	225	493	686	633	374	118	5	1	2604
55 S	0	1	11	69	295	787	1473	2107	2480	2598	2603	2604	2604
60 M	0	0	2	18	119	348	531	479	239	47	0	0	1784
60 S	0	0	2	21	140	487	1018	1497	1737	1783	1784	1784	1784

Corn Growing Degree Days
50 M	65	76	160	271	422	592	726	692	524	355	156	70	4109
50 S	65	141	301	571	994	1585	2312	3004	3527	3883	4039	4109	4109

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