EL CAPITAN DAM, CALIFORNIA

Period of Record General Climate Summary - Cooling Degree Days

Station:(042709) EL CAPITAN DAM
From Year=1948 To Year=2006
Cooling Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
55	70	88	114	207	304	455	636	661	588	424	207	87	3843
57	45	58	77	159	245	396	574	599	528	363	158	57	3259
60	20	28	38	99	165	307	481	506	438	274	97	26	2479
65	3	7	8	33	63	168	326	351	291	142	33	4	1428
70	0	1	1	8	15	64	175	200	159	57	8	0	687

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 Jul 28, 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