Average Temperatures for California Cities in December

Average daily high and low temperatures for December at dozens of cities throughout California are listed below in degrees Fahrenheit and Celsius.

You can jump to separate tables for cities in Southern California and Northern California.

The tables give the normal maximum and minimum temperatures based on weather data collected from 1991 to 2020 by the US National Centers for Environmental Information.

Northern California

December temperature averages
High °F	Low °F	Place	High °C	Low °C
56	40	Antioch	13	5
59	43	Berkeley	15	6
57	36	Chico	14	2
55	33	Clearlake	13	0
59	41	Concord	15	5
56	38	Davis	13	3
55	40	Eureka	13	4
57	40	Fairfield	14	5
58	43	Fremont	15	6
55	40	Fresno	13	4
53	33	Grass Valley	11	0
59	43	Hayward	15	6
57	39	Livermore	14	4
55	36	Madera	13	2
55	36	Merced	13	2
56	39	Modesto	13	4
59	40	Napa	15	4
58	43	Newark	15	6
60	45	Oakland	15	7

High °F	Low °F	Place	High °C	Low °C
58	38	Petaluma	14	4
59	39	Porterville	15	4
56	38	Red Bluff	13	3
56	37	Redding	13	3
59	40	Redwood City	15	5
58	44	Richmond	15	7
56	41	Sacramento	14	5
58	47	San Francisco	14	8
60	42	San Jose	15	5
57	42	San Rafael	14	6
59	38	Santa Rosa	15	3
55	32	Sonora	13	0
59	39	Stockton	15	4
57	40	Tracy	14	5
55	42	Turlock	13	6
56	36	Ukiah	13	2
58	40	Vacaville	14	4
58	42	Vallejo	14	6
62	39	Watsonville	17	4
56	38	Woodland	14	3
55	38	Yuba City	13	3

Southern California

Average December temperatures
High °F	Low °F	Place	High °C	Low °C
71	48	Anaheim	21	9
59	40	Bakersfield	15	4
68	42	Burbank	20	5
67	46	Chula Vista	19	8
70	43	El Centro	21	6
68	44	Escondido	20	7
68	46	Fullerton	20	8
56	36	Hanford	14	2
68	48	Irvine	20	9
58	30	Lancaster	14	-1
67	47	Long Beach	19	8
67	48	Los Angeles	20	9
63	47	Oceanside	17	8
67	44	Ontario	19	6
66	47	Oxnard	19	8
58	34	Palmdale	15	1
67	45	Pasadena	20	7
67	42	Pomona	19	5
67	43	Riverside	19	6
62	41	Salinas	16	5
66	50	San Diego	19	10
64	44	San Luis Obispo	18	7
68	48	Santa Ana	20	9
66	46	Santa Barbara	19	8
62	41	Santa Cruz	16	5
66	46	Torrance	19	8
57	33	Victorville	14	0
55	38	Visalia	13	3

Average December Temperatures at Cities in California

Northern California

Southern California

Reference

More California Weather Information