AVON, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(050405) AVON
From Year=1981 To Year=1989
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	0	8	77	268	440	668	682	406	101	13	0	2663
40 S	0	0	8	85	353	793	1461	2142	2549	2650	2663	2663	2663
45 M	0	0	0	30	154	295	513	527	267	32	1	0	1818
45 S	0	0	0	30	184	479	991	1518	1785	1817	1818	1818	1818
50 M	0	0	0	8	69	163	358	372	146	5	0	0	1120
50 S	0	0	0	8	76	239	597	968	1114	1120	1120	1120	1120
55 M	0	0	0	1	18	65	209	218	52	0	0	0	563
55 S	0	0	0	1	19	84	293	511	563	563	563	563	563
60 M	0	0	0	0	1	19	78	82	8	0	0	0	188
60 S	0	0	0	0	1	20	98	180	188	188	188	188	188

Corn Growing Degree Days
50 M	0	2	29	81	213	329	463	459	308	140	24	1	2050
50 S	0	3	31	113	326	655	1118	1577	1885	2025	2049	2050	2050

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