JACOB LAKE, ARIZONA

Period of Record General Climate Summary - Heating Degree Days

Station:(024418) JACOB LAKE
From Year=1916 To Year=1987
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1149	1007	980	761	430	173	48	88	242	599	900	1110	7487
60	994	865	825	611	282	78	6	19	122	444	750	955	5952
57	901	780	732	521	201	42	1	6	71	353	660	862	5131
55	839	724	670	461	154	26	0	3	46	294	600	800	4619
50	684	582	516	319	71	4	0	1	14	167	450	645	3453

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