APACHE 6 WNW, ARIZONA

Period of Record General Climate Summary - Heating Degree Days

Station:(020300) APACHE 6 WNW
From Year=1938 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	724	568	456	311	109	5	1	1	20	204	464	700	3562
60	569	427	305	180	34	0	0	0	3	90	314	545	2467
57	476	342	223	119	16	0	0	0	1	47	226	452	1902
55	414	286	176	85	10	0	0	0	0	28	171	390	1561
50	267	158	85	33	2	0	0	0	0	5	61	240	852

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