HOLLY, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(054076) HOLLY
From Year=1894 To Year=2009
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	20	52	172	395	697	983	1182	1122	825	476	125	23	6072
40 S	20	72	244	638	1335	2318	3500	4622	5447	5923	6048	6072	6072
45 M	4	17	89	265	544	833	1027	967	676	335	55	5	4818
45 S	4	21	111	376	920	1753	2780	3747	4423	4758	4813	4818	4818
50 M	1	3	36	156	397	683	872	812	529	210	16	1	3716
50 S	1	4	40	197	593	1276	2148	2960	3489	3699	3715	3716	3716
55 M	0	0	12	75	261	534	717	657	386	110	2	0	2755
55 S	0	0	12	87	348	882	1599	2256	2642	2752	2755	2755	2755
60 M	0	0	3	27	146	388	562	502	254	45	0	0	1928
60 S	0	0	3	30	176	564	1126	1629	1883	1927	1928	1928	1928

Corn Growing Degree Days
50 M	58	90	184	297	444	616	745	709	525	360	156	59	4244
50 S	58	148	332	630	1074	1690	2435	3144	3669	4029	4185	4244	4244

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