TUCSON MAGNETIC OBSY, ARIZONA

Period of Record General Climate Summary - Cooling Degree Days

Station:(028800) TUCSON MAGNETIC OBSY
From Year=1912 To Year=1994
Cooling Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
55	19	44	111	272	519	792	958	899	740	438	122	26	4940
57	10	27	76	220	458	732	896	837	680	378	86	14	4415
60	2	10	38	151	368	642	803	744	590	292	45	5	3691
65	0	1	8	62	228	492	648	589	441	163	10	0	2643
70	0	0	1	17	110	344	493	434	293	68	1	0	1761

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