TRACY CARBONA, CALIFORNIA

Period of Record General Climate Summary - Cooling Degree Days

Station:(048999) TRACY CARBONA
From Year=1949 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	3	14	58	154	325	494	631	586	475	273	47	3	3064
57	1	6	33	112	267	434	569	524	415	216	28	1	2608
60	0	1	12	64	188	346	476	432	326	140	11	0	1995
65	0	0	1	19	88	208	322	278	184	51	0	0	1151
70	0	0	0	3	32	101	178	139	74	12	0	0	539

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