STERLING, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(057950) STERLING
From Year=1895 To Year=2011
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	7	25	101	274	555	836	1059	995	670	340	72	10	4944
40 S	7	32	133	407	962	1798	2858	3853	4523	4862	4935	4944	4944
45 M	1	6	45	165	407	686	904	840	523	214	26	2	3820
45 S	1	7	52	217	624	1310	2214	3055	3578	3792	3818	3820	3820
50 M	0	1	15	84	271	538	749	685	382	113	6	0	2843
50 S	0	1	16	99	370	908	1657	2342	2724	2837	2843	2843	2843
55 M	0	0	3	33	159	392	594	531	251	45	1	0	2008
55 S	0	0	3	36	195	587	1181	1712	1963	2008	2008	2008	2008
60 M	0	0	0	8	75	257	440	378	140	12	0	0	1312
60 S	0	0	0	9	84	341	782	1159	1300	1312	1312	1312	1312

Corn Growing Degree Days
50 M	22	47	114	211	347	519	672	631	433	274	100	26	3395
50 S	22	68	182	393	740	1259	1931	2562	2995	3269	3369	3395	3395

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