HILLSIDE 4 NNE, ARIZONA

Period of Record General Climate Summary - Heating Degree Days

Station:(024053) HILLSIDE 4 NNE
From Year=1899 To Year=1997
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	694	552	496	304	110	14	0	0	14	173	484	680	3523
60	539	411	342	172	40	2	0	0	2	74	335	525	2444
57	447	328	253	109	18	1	0	0	1	41	249	432	1877
55	385	274	198	75	10	0	0	0	0	27	196	371	1535
50	235	151	88	24	2	0	0	0	0	8	93	223	823

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