TRACY PUMPING PLANT, CALIFORNIA

Period of Record General Climate Summary - Cooling Degree Days

Station:(049001) TRACY PUMPING PLANT
From Year=1955 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	5	16	70	168	363	521	666	653	535	323	57	6	3382
57	2	6	42	124	304	461	604	591	475	264	33	2	2907
60	0	1	16	71	221	372	511	498	385	181	12	0	2269
65	0	0	2	21	114	233	357	344	239	74	1	0	1383
70	0	0	0	4	49	124	212	195	113	19	0	0	715

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