SILVER CITY CO AP, NEW MEXICO

Period of Record General Climate Summary - Growing Degree Days

Station:(298330) SILVER CITY WB AP
From Year=1960 To Year=2012
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	56	110	255	475	732	984	1125	1062	850	604	257	64	6575
40 S	56	166	420	895	1627	2612	3737	4799	5649	6253	6511	6575	6575
45 M	10	41	137	329	577	834	970	907	700	450	137	14	5107
45 S	10	52	189	517	1095	1929	2899	3806	4506	4956	5093	5107	5107
50 M	1	9	56	193	424	684	815	752	550	299	53	1	3837
50 S	1	10	67	259	683	1367	2183	2935	3484	3784	3837	3837	3837
55 M	0	1	13	85	274	534	660	597	400	159	9	0	2732
55 S	0	1	14	99	373	908	1568	2165	2565	2724	2732	2732	2732
60 M	0	0	1	22	144	385	505	442	253	56	0	0	1809
60 S	0	0	1	23	167	552	1057	1499	1752	1809	1809	1809	1809

Corn Growing Degree Days
50 M	69	111	209	329	480	626	746	710	548	386	188	65	4469
50 S	69	180	390	719	1199	1825	2572	3282	3830	4216	4403	4469	4469

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