PLATORO, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(056559) PLATORO
From Year=1949 To Year=1991
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	64	253	403	373	165	28	0	0	1290
40 S	0	0	0	3	67	320	723	1097	1262	1290	1290	1290	1290
45 M	0	0	0	0	12	120	248	219	54	3	0	0	657
45 S	0	0	0	0	12	133	381	600	654	657	657	657	657
50 M	0	0	0	0	1	30	100	84	8	0	0	0	223
50 S	0	0	0	0	1	31	131	215	223	223	223	223	223
55 M	0	0	0	0	0	3	13	16	0	0	0	0	32
55 S	0	0	0	0	0	3	16	32	32	32	32	32	32
60 M	0	0	0	0	0	0	1	3	0	0	0	0	4
60 S	0	0	0	0	0	0	1	4	4	4	4	4	4

Corn Growing Degree Days
50 M	0	1	4	18	94	244	307	279	199	96	16	0	1258
50 S	0	2	5	23	117	361	668	947	1146	1242	1258	1258	1258

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