STOCKTON METRO AP, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(048558) STOCKTON WSO
From Year=1948 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	601	409	334	185	59	8	0	0	4	82	351	598	2630
60	446	269	188	81	14	1	0	0	0	22	209	443	1671
57	354	188	115	40	4	0	0	0	0	7	136	351	1196
55	295	139	75	23	1	0	0	0	0	3	96	291	924
50	158	48	17	3	0	0	0	0	0	0	30	156	413

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