PARACHUTE, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(056311) PARACHUTE
From Year=1981 To Year=1992
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	26	128	276	600	881	1114	1091	755	335	64	1	5272
40 S	1	27	155	431	1031	1912	3026	4117	4872	5207	5271	5272	5272
45 M	0	7	48	158	446	731	959	936	605	199	17	0	4107
45 S	0	7	55	213	659	1391	2350	3286	3891	4090	4107	4107	4107
50 M	0	2	13	71	301	582	804	781	458	82	2	0	3096
50 S	0	2	15	86	387	969	1773	2554	3012	3094	3096	3096	3096
55 M	0	0	2	19	181	436	649	626	318	19	0	0	2251
55 S	0	0	2	22	202	638	1288	1914	2232	2251	2251	2251	2251
60 M	0	0	0	2	84	294	494	471	191	3	0	0	1541
60 S	0	0	0	2	86	380	875	1346	1537	1541	1541	1541	1541

Corn Growing Degree Days
50 M	2	27	117	219	401	542	676	667	486	248	65	1	3449
50 S	2	29	146	364	766	1307	1983	2650	3135	3384	3448	3449	3449

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