GLENWOOD SPGS #2, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(053359) GLENWOOD SPRINGS # 2
From Year=1893 To Year=2012
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	0	5	65	215	472	699	921	864	603	296	40	2	4182
40 S	0	6	71	286	758	1456	2377	3242	3845	4140	4180	4182	4182
45 M	0	0	18	109	323	549	766	709	454	168	9	0	3105
45 S	0	0	19	128	451	999	1766	2475	2929	3096	3105	3105	3105
50 M	0	0	3	39	190	400	611	554	309	71	1	0	2177
50 S	0	0	3	42	232	631	1243	1797	2106	2176	2177	2177	2177
55 M	0	0	0	8	84	257	456	400	175	19	0	0	1399
55 S	0	0	0	8	92	349	805	1205	1380	1399	1399	1399	1399
60 M	0	0	0	1	21	131	303	247	71	2	0	0	776
60 S	0	0	0	1	22	153	456	703	774	776	776	776	776

Corn Growing Degree Days
50 M	1	11	73	183	341	470	579	555	423	257	61	4	2958
50 S	1	12	86	269	610	1079	1658	2214	2636	2893	2953	2958	2958

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