CARIBOU RCH, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(051342) CARIBOU RANCH
From Year=1962 To Year=1970
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	1	1	16	36	215	351	657	520	344	188	23	7	2358
40 S	1	2	18	54	269	620	1277	1796	2140	2329	2352	2358	2358
45 M	0	0	2	9	113	207	502	365	212	79	2	1	1491
45 S	0	0	2	11	124	330	832	1197	1409	1487	1489	1491	1491
50 M	0	0	0	1	39	88	348	212	99	21	0	0	807
50 S	0	0	0	1	40	128	475	687	786	807	807	807	807
55 M	0	0	0	0	7	23	198	85	23	2	0	0	338
55 S	0	0	0	0	7	30	228	313	336	338	338	338	338
60 M	0	0	0	0	0	5	67	15	0	0	0	0	87
60 S	0	0	0	0	0	5	72	87	87	87	87	87	87

Corn Growing Degree Days
50 M	1	2	16	48	159	230	407	310	226	150	26	8	1583
50 S	1	3	19	67	226	456	863	1174	1400	1550	1575	1583	1583

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