WESTCLIFFE, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(058931) WESTCLIFFE
From Year=1895 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	2	5	28	109	308	550	715	666	446	173	26	4	3031
40 S	2	7	35	144	452	1003	1717	2383	2829	3002	3027	3031	3031
45 M	0	1	6	40	176	401	560	511	300	75	5	0	2075
45 S	0	1	7	46	222	624	1183	1694	1994	2070	2075	2075	2075
50 M	0	0	1	9	75	256	405	356	167	22	0	0	1290
50 S	0	0	1	10	85	341	746	1102	1268	1290	1290	1290	1290
55 M	0	0	0	1	20	128	251	203	64	4	0	0	671
55 S	0	0	0	1	21	149	400	603	667	671	671	671	671
60 M	0	0	0	0	3	41	108	72	14	0	0	0	238
60 S	0	0	0	0	3	44	152	223	237	238	238	238	238

Corn Growing Degree Days
50 M	8	14	48	121	254	401	486	453	348	200	61	14	2408
50 S	8	22	70	191	445	846	1332	1786	2134	2333	2395	2408	2408

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