PEARCE SUNSITES, ARIZONA

Period of Record General Climate Summary - Heating Degree Days

Station:(026353) PEARCE SUNSITES
From Year=1913 To Year=2012
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	618	478	376	176	42	1	0	0	3	100	385	626	2805
60	463	337	230	78	13	0	0	0	0	36	240	471	1868
57	371	256	156	43	5	0	0	0	0	18	163	378	1391
55	310	204	115	28	3	0	0	0	0	10	121	318	1110
50	171	100	46	7	0	0	0	0	0	3	49	178	554

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