GREELEY UNC, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(053553) GREELEY UNC
From Year=1967 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	15	35	147	316	589	859	1066	998	705	364	88	15	5197
40 S	15	50	197	513	1102	1961	3027	4025	4730	5094	5181	5197	5197
45 M	3	9	68	195	438	709	911	843	556	232	35	3	4003
45 S	3	12	81	275	713	1422	2333	3176	3733	3965	4000	4003	4003
50 M	0	1	25	100	296	559	756	688	412	124	9	0	2971
50 S	0	2	26	126	422	982	1738	2426	2837	2961	2971	2971	2971
55 M	0	0	6	39	173	412	601	533	274	51	1	0	2089
55 S	0	0	6	45	218	629	1231	1764	2038	2088	2089	2089	2089
60 M	0	0	1	10	79	272	447	379	152	14	0	0	1353
60 S	0	0	1	11	90	362	809	1188	1340	1353	1353	1353	1353

Corn Growing Degree Days
50 M	28	51	146	236	373	530	670	631	452	272	91	27	3508
50 S	28	79	225	461	835	1365	2035	2665	3118	3390	3481	3508	3508

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