WILLOW SPRINGS RCH, ARIZONA

Period of Record General Climate Summary - Cooling Degree Days

Station:(029382) WILLOW SPRINGS RANCH
From Year=1943 To Year=1978
Cooling Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
55	5	17	57	190	404	669	814	731	589	327	70	5	3878
57	2	8	37	148	345	609	752	669	530	273	45	2	3420
60	1	2	17	93	262	520	659	576	441	197	20	0	2788
65	0	0	3	37	141	372	504	421	296	92	2	0	1868
70	0	0	0	10	51	234	349	268	164	28	0	0	1105

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