EAGLE FAA AIRPORT, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(052454) EAGLE FAA AIRPORT
From Year=1948 To Year=1994
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	0	1	21	121	356	599	806	741	477	185	13	1	3320
40 S	0	1	22	143	499	1097	1904	2645	3121	3306	3320	3320	3320
45 M	0	0	3	43	216	449	651	586	331	81	2	0	2361
45 S	0	0	3	46	262	711	1362	1948	2279	2360	2361	2361	2361
50 M	0	0	0	9	101	303	496	431	193	20	0	0	1554
50 S	0	0	0	9	110	413	909	1340	1534	1554	1554	1554	1554
55 M	0	0	0	1	28	168	342	277	81	2	0	0	899
55 S	0	0	0	1	29	197	538	815	897	899	899	899	899
60 M	0	0	0	0	3	64	189	133	19	0	0	0	408
60 S	0	0	0	0	3	67	256	389	408	408	408	408	408

Corn Growing Degree Days
50 M	1	7	46	147	301	443	539	509	386	230	43	2	2653
50 S	1	8	54	201	501	944	1483	1992	2379	2608	2651	2653	2653

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