COLORADO NM, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(051772) COLORADO NATL MONUMENT
From Year=1940 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	4	21	129	342	643	940	1171	1075	792	437	87	5	5645
40 S	4	24	154	496	1138	2078	3249	4324	5116	5553	5640	5645	5645
45 M	0	4	59	217	491	790	1016	920	642	298	33	1	4471
45 S	0	4	64	281	771	1562	2577	3498	4140	4438	4471	4471	4471
50 M	0	0	22	120	347	640	861	765	495	177	9	0	3436
50 S	0	0	22	142	489	1129	1990	2755	3250	3427	3436	3436	3436
55 M	0	0	5	54	219	492	706	610	351	86	1	0	2526
55 S	0	0	5	59	279	771	1476	2087	2438	2524	2526	2526	2526
60 M	0	0	1	18	116	349	551	456	219	30	0	0	1740
60 S	0	0	1	19	134	484	1034	1490	1709	1739	1740	1740	1740

Corn Growing Degree Days
50 M	1	13	86	217	406	608	758	704	508	264	51	2	3619
50 S	1	15	100	317	723	1331	2089	2794	3302	3566	3617	3619	3619

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