ELK VALLEY, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(042749) ELK VALLEY
From Year=1938 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	860	682	663	492	324	162	53	71	173	438	657	813	5388
60	705	541	508	344	188	69	11	15	69	286	507	658	3900
57	612	456	415	258	122	33	4	4	32	200	417	565	3118
55	550	400	354	205	85	19	2	1	18	148	357	503	2643
50	397	261	209	95	28	3	0	0	3	54	216	350	1616

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