CASA GRANDE, ARIZONA

Period of Record General Climate Summary - Cooling Degree Days

Station:(021306) CASA GRANDE
From Year=1898 To Year=2009
Cooling Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
55	29	73	196	391	667	915	1123	1059	857	516	161	28	6016
57	15	48	150	335	605	855	1061	997	797	455	119	14	5451
60	4	22	91	254	512	765	968	904	707	366	69	4	4667
65	0	3	30	136	361	615	813	749	557	229	18	0	3514
70	0	0	7	53	221	466	658	594	408	116	2	0	2526

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