SAN DIEGO WSO AIRPORT, CALIFORNIA

Period of Record General Climate Summary - Cooling Degree Days

Station:(047740) SAN DIEGO WSO AIRPORT
From Year=1914 To Year=2005
Cooling Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
55	76	86	127	183	257	325	452	495	443	343	194	92	3074
57	43	51	79	128	196	265	390	433	383	282	140	54	2442
60	16	19	30	59	108	175	297	340	293	191	72	18	1619
65	2	3	4	10	19	47	143	185	146	65	15	1	641
70	0	0	1	2	2	7	33	54	44	14	2	0	158

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 Apr 5, 2006
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