MARVINE RCH, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(055414) MARVINE RANCH
From Year=1972 To Year=1998
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	0	3	26	154	370	547	512	295	82	4	0	1994
40 S	0	0	3	29	183	553	1101	1613	1908	1990	1994	1994	1994
45 M	0	0	0	5	58	229	393	357	165	21	0	0	1229
45 S	0	0	0	5	63	293	685	1043	1208	1229	1229	1229	1229
50 M	0	0	0	0	10	109	239	206	65	2	0	0	631
50 S	0	0	0	0	10	119	358	564	629	631	631	631	631
55 M	0	0	0	0	1	30	98	74	15	0	0	0	217
55 S	0	0	0	0	1	30	128	202	217	217	217	217	217
60 M	0	0	0	0	0	3	17	9	1	0	0	0	30
60 S	0	0	0	0	0	3	20	29	30	30	30	30	30

Corn Growing Degree Days
50 M	1	1	11	53	174	324	416	394	270	132	17	1	1794
50 S	1	2	13	66	240	564	980	1374	1644	1776	1793	1794	1794

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