WALNUT CREEK, ARIZONA

Period of Record General Climate Summary - Heating Degree Days

Station:(029158) WALNUT CREEK
From Year=1915 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	883	713	650	449	243	64	3	6	74	351	656	899	4992
60	728	572	495	301	121	16	0	0	21	207	506	744	3712
57	635	487	402	217	70	6	0	0	8	135	417	651	3028
55	573	430	342	167	46	2	0	0	4	96	357	589	2607
50	419	291	200	72	13	0	0	0	0	35	216	435	1680

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