STOCKTON METRO AP, CALIFORNIA

Period of Record General Climate Summary - Cooling Degree Days

Station:(048558) STOCKTON WSO
From Year=1948 To Year=2012
Cooling Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
55	4	13	52	155	353	530	691	657	530	290	45	4	3324
57	2	5	30	113	293	470	629	595	470	233	25	1	2866
60	0	1	10	63	210	381	536	502	380	154	8	0	2246
65	0	0	1	18	100	238	381	348	234	59	0	0	1378
70	0	0	0	3	38	120	230	199	111	16	0	0	718

Cooling Degree Day units are computed as the difference between the daily average temperature and the base temperature. (Daily Ave. Temp. - Base Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is above the base temperature. Negative numbers are discarded. Example: If the days high temperature was 95 and the low temperature was 51, the base 60 heating degree day units is ((95 + 51) / 2) - 60 = 13. 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