CASTLE HOT SPRINGS, ARIZONA

Period of Record General Climate Summary - Heating Degree Days

Station:(021353) CASTLE HOT SPRINGS
From Year=1916 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	370	263	183	61	9	0	0	0	0	18	151	356	1411
60	225	143	86	21	1	0	0	0	0	5	68	212	762
57	149	88	47	9	0	0	0	0	0	2	38	139	473
55	108	60	29	5	0	0	0	0	0	1	24	100	327
50	38	17	6	1	0	0	0	0	0	0	6	36	103

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