RICO, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(057017) RICO
From Year=1893 To Year=2001
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	2	32	165	368	552	510	296	106	7	0	2040
40 S	0	0	2	34	200	568	1120	1631	1927	2032	2040	2040	2040
45 M	0	0	0	5	62	224	397	356	157	30	0	0	1231
45 S	0	0	0	5	67	291	688	1044	1201	1231	1231	1231	1231
50 M	0	0	0	0	11	102	243	203	53	3	0	0	615
50 S	0	0	0	0	11	114	357	559	612	615	615	615	615
55 M	0	0	0	0	1	27	99	70	8	0	0	0	205
55 S	0	0	0	0	1	28	127	197	205	205	205	205	205
60 M	0	0	0	0	0	3	14	8	0	0	0	0	25
60 S	0	0	0	0	0	3	17	24	25	25	25	25	25

Corn Growing Degree Days
50 M	5	6	14	60	176	312	393	360	251	146	33	7	1763
50 S	5	11	25	85	261	573	966	1325	1577	1722	1756	1763	1763

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