ALTENBERN, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(050214) ALTENBERN
From Year=1947 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	66	208	465	708	928	855	579	274	35	2	4125
40 S	0	6	71	279	744	1453	2381	3236	3815	4089	4124	4125	4125
45 M	0	0	19	103	317	558	773	700	431	149	7	0	3056
45 S	0	0	19	122	439	997	1770	2470	2901	3050	3056	3056	3056
50 M	0	0	3	36	185	409	618	545	288	59	0	0	2144
50 S	0	0	3	39	224	633	1251	1796	2084	2144	2144	2144	2144
55 M	0	0	0	7	81	265	463	390	157	14	0	0	1378
55 S	0	0	0	7	88	353	816	1207	1364	1378	1378	1378	1378
60 M	0	0	0	1	20	138	309	238	57	1	0	0	763
60 S	0	0	0	1	20	158	467	705	762	763	763	763	763

Corn Growing Degree Days
50 M	1	11	88	193	350	479	582	552	411	244	56	3	2972
50 S	1	12	100	293	643	1122	1704	2256	2668	2912	2968	2972	2972

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