GRAND CANYON AIRWAYS, ARIZONA

Period of Record General Climate Summary - Cooling Degree Days

Station:(023586) GRAND CANYON AIRWAYS
From Year=1948 To Year=1967
Cooling Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
55	0	0	0	8	78	284	456	374	205	39	0	0	1445
57	0	0	0	3	50	233	394	312	155	21	0	0	1170
60	0	0	0	1	23	163	302	222	93	7	0	0	809
65	0	0	0	0	4	70	154	90	27	0	0	0	345
70	0	0	0	0	0	19	45	18	2	0	0	0	85

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