WESTCLIFFE, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(058931) WESTCLIFFE
From Year=1948 To Year=2006
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	24	108	302	542	710	649	429	169	24	4	2970
40 S	2	7	31	139	441	983	1694	2343	2772	2941	2965	2970	2970
45 M	0	1	4	40	171	392	555	494	284	73	5	0	2019
45 S	0	1	5	45	215	607	1163	1657	1941	2013	2018	2019	2019
50 M	0	0	0	9	71	247	400	339	151	20	1	0	1239
50 S	0	0	0	10	81	328	729	1068	1219	1239	1239	1239	1239
55 M	0	0	0	1	18	119	246	187	53	4	0	0	628
55 S	0	0	0	1	20	139	385	572	625	628	628	628	628
60 M	0	0	0	0	3	34	102	59	9	0	0	0	207
60 S	0	0	0	0	3	37	139	198	207	207	207	207	207

Corn Growing Degree Days
50 M	8	15	46	121	252	396	486	443	340	203	57	14	2382
50 S	8	23	69	190	442	838	1324	1767	2107	2310	2367	2382	2382

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 Jul 28, 2006
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