LIVERMORE, CALIFORNIA

Period of Record General Climate Summary - Cooling Degree Days

Station:(044997) LIVERMORE
From Year=1930 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	5	11	39	100	233	376	523	511	434	251	45	6	2531
57	2	5	20	66	180	316	461	449	374	195	26	2	2096
60	0	1	6	32	112	231	368	356	285	123	9	0	1524
65	0	0	0	7	43	115	219	205	151	42	1	0	783
70	0	0	0	1	13	48	100	86	60	10	0	0	317

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