HAPPY JACK RS, ARIZONA

Period of Record General Climate Summary - Heating Degree Days

Station:(023828) HAPPY JACK RANGER STN
From Year=1969 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	1123	939	927	711	500	212	61	99	266	603	880	1149	7471
60	968	798	772	561	347	100	8	20	132	448	730	994	5880
57	875	714	679	471	260	55	2	5	72	356	640	901	5030
55	813	657	617	412	206	33	0	2	44	296	580	839	4500
50	658	519	462	269	98	8	0	0	10	164	431	684	3304

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