CHANDLER, ARIZONA

Period of Record General Climate Summary - Heating Degree Days

Station:(021511) CHANDLER
From Year=1912 To Year=1980
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	503	325	238	76	14	0	0	0	0	38	246	478	1917
60	349	191	115	24	3	0	0	0	0	10	126	324	1143
57	259	122	62	10	1	0	0	0	0	4	73	235	767
55	203	85	38	5	1	0	0	0	0	2	48	181	562
50	89	25	8	1	0	0	0	0	0	0	12	76	211

Heating Degree Day units are computed as the difference between the base temperature and the daily average temperature. (Base Temp. - Daily Ave. Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is below the base temperature. Negative numbers are discarded. Example: If the days high temperature was 65 and the low temperature was 31, the base 50 heating degree day units is 50 - ((65 + 31) / 2) = 2. 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