YAMPA, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(059265) YAMPA
From Year=1909 To Year=2012
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	10	64	236	459	673	624	376	132	14	0	2590
40 S	0	0	10	74	310	769	1442	2066	2443	2575	2589	2590	2590
45 M	0	0	1	20	123	314	518	469	239	52	2	0	1738
45 S	0	0	1	21	144	458	976	1445	1684	1736	1738	1738	1738
50 M	0	0	0	3	46	180	363	315	120	13	0	0	1041
50 S	0	0	0	4	49	230	593	908	1028	1041	1041	1041	1041
55 M	0	0	0	0	10	77	211	167	39	2	0	0	506
55 S	0	0	0	0	10	87	298	465	504	506	506	506	506
60 M	0	0	0	0	1	20	78	51	6	0	0	0	156
60 S	0	0	0	0	1	21	99	150	156	156	156	156	156

Corn Growing Degree Days
50 M	0	1	13	72	192	323	433	403	275	134	22	1	1869
50 S	0	1	15	86	278	601	1034	1437	1712	1846	1868	1869	1869

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