SOUTH PHOENIX, ARIZONA

Period of Record General Climate Summary - Cooling Degree Days

Station:(028112) SOUTH PHOENIX
From Year=1961 To Year=2007
Cooling Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
55	38	86	199	366	623	836	1033	999	806	499	160	30	5673
57	21	56	152	309	561	776	971	937	746	437	117	14	5095
60	7	24	93	228	469	686	878	844	656	347	64	3	4298
65	0	3	30	113	318	536	723	689	506	209	14	0	3142
70	0	0	6	39	182	387	568	534	356	97	1	0	2170

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