PLACERVILLE, CALIFORNIA

Period of Record General Climate Summary - Cooling Degree Days

Station:(046960) PLACERVILLE
From Year=1915 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	1	5	20	63	195	383	615	577	406	186	19	0	2470
57	0	2	11	42	152	327	553	515	348	144	10	0	2103
60	0	0	4	20	98	247	460	423	266	92	3	0	1614
65	0	0	0	4	40	135	311	274	146	37	0	0	947
70	0	0	0	0	12	60	175	144	61	11	0	0	463

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