MT EVANS RSCH STN, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(055797) MT EVANS RESEARCH STN
From Year=1983 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	0	0	0	3	48	191	340	298	141	23	0	0	1044
40 S	0	0	0	3	52	242	582	880	1021	1044	1044	1044	1044
45 M	0	0	0	0	10	84	195	155	55	3	0	0	502
45 S	0	0	0	0	10	94	289	444	499	502	502	502	502
50 M	0	0	0	0	1	25	78	48	14	0	0	0	166
50 S	0	0	0	0	1	26	104	152	166	166	166	166	166
55 M	0	0	0	0	0	5	18	7	1	0	0	0	30
55 S	0	0	0	0	0	5	22	29	30	30	30	30	30
60 M	0	0	0	0	0	1	2	0	0	0	0	0	2
60 S	0	0	0	0	0	1	2	2	2	2	2	2	2

Corn Growing Degree Days
50 M	0	0	0	5	42	133	208	175	96	21	0	0	680
50 S	0	0	0	5	47	180	387	562	658	679	680	680	680

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