ARIZONA SONORA DESERT M, ARIZONA

Period of Record General Climate Summary - Heating Degree Days

Station:(020415) ARIZONA SONORA DESERT M
From Year=1962 To Year=1973
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	369	224	195	65	9	0	0	0	0	29	158	371	1420
60	225	116	104	22	3	0	0	0	0	11	78	231	789
57	152	72	64	9	1	0	0	0	0	5	46	160	509
55	113	50	43	4	1	0	0	0	0	3	31	119	364
50	49	17	11	1	0	0	0	0	0	1	9	49	135

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