TUCSON 17 NW, ARIZONA

Period of Record General Climate Summary - Cooling Degree Days

Station:(028795) TUCSON 17 NW
From Year=1982 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	62	92	219	395	672	917	1025	971	829	538	206	54	5980
57	40	63	173	339	610	857	963	909	769	477	163	33	5396
60	18	32	114	262	517	767	870	816	679	387	106	12	4581
65	3	6	44	149	366	617	715	661	529	246	40	1	3378
70	0	1	10	66	225	468	560	506	380	126	9	0	2352

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