BRECKENRIDGE, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(050909) BRECKENRIDGE
From Year=1893 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	1	11	77	262	427	417	211	41	2	0	1448
40 S	0	0	1	12	88	351	778	1195	1406	1446	1448	1448	1448
45 M	0	0	0	1	22	135	275	262	92	7	0	0	795
45 S	0	0	0	1	24	158	433	696	788	795	795	795	795
50 M	0	0	0	0	6	46	135	120	23	1	0	0	330
50 S	0	0	0	0	6	52	187	306	329	330	330	330	330
55 M	0	0	0	0	1	12	38	32	5	0	0	0	88
55 S	0	0	0	0	1	13	51	83	87	88	88	88	88
60 M	0	0	0	0	0	2	5	5	2	0	0	0	15
60 S	0	0	0	0	0	3	8	13	15	15	15	15	15

Corn Growing Degree Days
50 M	4	2	4	27	95	234	314	316	213	85	13	1	1309
50 S	4	6	10	37	132	366	681	997	1210	1295	1308	1309	1309

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