LIVERMORE, CALIFORNIA

Period of Record General Climate Summary - Cooling Degree Days

Station:(044997) LIVERMORE
From Year=1903 To Year=2012
Cooling Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
55	4	12	42	99	222	372	514	501	426	245	47	6	2490
57	1	5	23	66	170	313	452	439	366	189	27	2	2054
60	0	1	7	32	104	228	359	346	278	117	9	0	1483
65	0	0	1	7	39	113	211	196	146	39	1	0	752
70	0	0	0	1	11	47	94	80	58	8	0	0	300

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 Oct 31, 2012
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