PHANTOM RCH, ARIZONA

Period of Record General Climate Summary - Cooling Degree Days

Station:(026471) PHANTOM RANCH
From Year=1966 To Year=2012
Cooling Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
55	4	30	182	397	699	962	1122	1035	807	464	110	5	5817
57	2	16	138	342	637	902	1060	973	747	404	77	3	5300
60	0	5	86	262	545	812	967	880	657	317	41	0	4573
65	0	0	30	147	395	662	812	725	508	186	8	0	3473
70	0	0	6	63	254	513	657	570	359	87	1	0	2509

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