ALLENSPARK 2NNW, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(050183) ALLENSPARK LODGE
From Year=1944 To Year=1993
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	3	6	11	56	202	434	617	562	356	154	24	5	2429
40 S	3	9	20	75	277	711	1328	1890	2246	2400	2425	2429	2429
45 M	0	1	2	18	95	291	462	407	223	69	5	0	1574
45 S	0	1	4	21	116	407	870	1277	1500	1569	1573	1574	1574
50 M	0	0	0	2	30	165	309	254	111	20	1	0	891
50 S	0	0	0	2	32	196	505	760	871	891	891	891	891
55 M	0	0	0	0	4	69	163	116	37	2	0	0	392
55 S	0	0	0	0	4	74	237	353	390	392	392	392	392
60 M	0	0	0	0	0	18	53	28	7	0	0	0	106
60 S	0	0	0	0	0	18	71	99	106	106	106	106	106

Corn Growing Degree Days
50 M	2	5	9	50	152	293	397	357	247	120	19	5	1658
50 S	2	7	16	67	219	512	909	1266	1514	1634	1653	1658	1658

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