LEADVILLE LAKE CO AP, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(054885) LEADVILLE 2 SW
From Year=1976 To Year=2008
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	8	108	308	464	414	214	38	1	0	1555
40 S	0	0	0	8	116	424	888	1302	1516	1554	1555	1555	1555
45 M	0	0	0	0	29	169	310	260	91	5	0	0	864
45 S	0	0	0	0	29	198	507	767	859	864	864	864	864
50 M	0	0	0	0	5	58	158	114	21	0	0	0	357
50 S	0	0	0	0	5	63	221	335	357	357	357	357	357
55 M	0	0	0	0	0	8	43	19	2	0	0	0	72
55 S	0	0	0	0	0	9	51	70	72	72	72	72	72
60 M	0	0	0	0	0	0	2	0	0	0	0	0	3
60 S	0	0	0	0	0	0	2	3	3	3	3	3	3

Corn Growing Degree Days
50 M	1	0	4	25	125	264	343	301	195	69	8	0	1336
50 S	1	1	5	30	156	420	762	1064	1259	1328	1336	1336	1336

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