APACHE POWDER COMPNY, ARIZONA

Period of Record General Climate Summary - Heating Degree Days

Station:(020309) APACHE POWDER COMPANY
From Year=1923 To Year=1990
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	609	462	364	149	37	0	0	0	2	90	383	591	2689
60	454	322	220	62	9	0	0	0	0	30	237	437	1772
57	362	241	148	33	3	0	0	0	0	14	160	344	1307
55	302	193	109	21	2	0	0	0	0	8	118	284	1036
50	165	95	41	5	0	0	0	0	0	2	47	150	505

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