DOUGLAS, ARIZONA

Period of Record General Climate Summary - Cooling Degree Days

Station:(022659) DOUGLAS
From Year=1948 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	3	15	77	196	420	666	764	695	548	275	44	4	3707
57	1	7	51	147	359	606	702	633	488	219	25	1	3239
60	0	2	23	86	269	516	609	540	398	142	9	0	2595
65	0	0	3	22	136	366	454	385	250	50	1	0	1667
70	0	0	0	3	45	221	299	230	116	8	0	0	923

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