DELTA, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(052192) DELTA
From Year=1893 To Year=1999
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	3	18	121	329	610	848	1051	979	697	366	62	5	5088
40 S	3	21	141	471	1080	1928	2979	3958	4655	5021	5083	5088	5088
45 M	0	3	47	201	456	698	896	824	547	229	17	1	3918
45 S	0	3	50	251	707	1405	2301	3125	3672	3900	3918	3918	3918
50 M	0	0	12	99	309	548	741	669	399	114	3	0	2894
50 S	0	0	12	111	420	968	1709	2377	2777	2891	2894	2894	2894
55 M	0	0	2	35	177	399	586	514	258	40	0	0	2010
55 S	0	0	2	37	214	613	1199	1713	1970	2010	2010	2010	2010
60 M	0	0	0	7	75	254	432	359	132	8	0	0	1267
60 S	0	0	0	7	83	337	769	1127	1259	1267	1267	1267	1267

Corn Growing Degree Days
50 M	6	34	135	267	422	532	634	605	477	310	89	9	3522
50 S	6	41	175	443	865	1397	2032	2637	3114	3424	3513	3522	3522

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