ARCH, NEW MEXICO

Period of Record General Climate Summary - Cooling Degree Days

Station:(290525) ARCH
From Year=1908 To Year=2005
Cooling Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
55	1	3	23	105	340	593	697	643	405	147	14	0	2970
57	0	1	13	74	286	533	635	581	347	107	7	0	2586
60	0	0	4	38	210	443	542	488	264	61	3	0	2054
65	0	0	0	7	107	296	388	333	143	17	0	0	1292
70	0	0	0	1	39	162	237	183	55	3	0	0	679

Cooling 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.
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