AVALON CATALINA AP, CALIFORNIA

Period of Record General Climate Summary - Cooling Degree Days

Station:(047910) SANTA CATALINA WB AIRPO
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	81	82	55	99	131	167	429	500	439	369	179	84	2614
57	61	61	39	78	96	120	367	438	379	311	140	62	2151
60	36	35	22	55	61	70	276	346	293	234	93	38	1558
65	12	11	6	26	26	27	152	212	175	136	44	11	839
70	2	2	1	11	9	9	71	119	101	72	18	1	416

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