California September Weather

California weather averages and all-time records in the month of September from 1991–2020 based on data made available by the NOAA.

State:

Month:

Statewide September Averages
High temperature	85.2 °F
Low temperature	55.9 °F
Precipitation	0.3 inches

California Cities

September weather averages for various places in California, from 1991–2020.

City	Average (°F)		Record (°F)		Monthly (inches)
City	High	Low	High	Low	Precipitation	Snow
Antioch	86.7	58.1	110	38	0.1	n/a
Bakersfield	91.6	64.4	115	30	0.0	0.0
Barstow	94.5	63.1	113	32	0.3	0.0
Berkeley	75.4	53.9	106	38	0.1	0.0
Big Bear Lake	74.5	43.3	90	19	0.4	0.0
Bishop	88.9	47.2	107	25	0.1	0.0
Blythe	102.1	73.9	121	44	0.3	n/a
Chula Vista	78.7	64.5	108	43	0.1	0.0
Coalinga	95.0	61.0	115	32	0.0	0.0
Colusa	89.8	54.9	114	34	0.1	0.0
Crescent City	64.0	50.0	97	33	1.1	n/a
Culver City	79.0	62.1	111	40	0.1	0.0
Davis	90.1	54.7	116	35	0.1	0.0
Death Valley	107.8	76.6	125	55	0.2	0.0
El Cajon	88.5	62.5	114	37	0.1	n/a
Escondido	87.2	62.7	115	32	0.2	0.0
Eureka	64.4	51.1	87	41	0.7	0.0
Fairfield	87.2	55.9	114	39	0.1	0.0
Fresno	91.9	62.6	114	37	0.0	0.0
Gilroy	85.8	54.1	113	30	0.0	0.0
Half Moon Bay	66.5	51.5	92	35	0.2	0.0
Hanford	91.5	58.0	114	35	0.1	0.0
Hollister	81.7	53.0	111	31	0.1	0.0
Imperial	101.8	72.4	120	49	0.3	0.0
Indio	101.5	75.8	122	46	0.1	n/a
King City	85.3	51.5	115	32	0.0	0.0
Lake Elsinore	94.9	60.5	117	35	0.2	0.0
Lindsay	92.4	57.1	112	35	0.1	0.0
Livermore	85.9	55.4	115	35	0.1	n/a
Long Beach	82.9	63.9	111	44	0.1	n/a
Los Angeles	76.3	63.7	110	47	0.1	n/a
Los Banos	90.4	59.4	113	38	0.1	0.0
Madera	91.2	57.4	115	34	0.0	n/a
Merced	90.6	56.6	116	32	0.0	n/a
Modesto	89.1	59.4	112	40	0.1	n/a
Monterey	70.8	53.4	104	41	0.1	0.0
Napa	80.9	50.8	115	35	0.1	n/a
Needles	102.3	76.0	120	40	0.3	n/a
Nevada City	81.6	55.1	107	27	0.6	0.0
Newport Beach	73.1	64.2	107	45	0.1	0.0
Oakland	74.7	55.6	104	41	0.1	n/a
Orland	90.2	58.6	114	39	0.2	0.0
Oroville	89.1	54.9	115	36	0.4	0.0
Oxnard	73.2	58.9	104	40	0.1	n/a
Palm Springs	101.8	73.6	122	46	0.2	n/a
Palmdale	92.3	59.5	111	34	0.2	n/a
Pasadena	90.2	63.1	115	41	0.2	0.0
Paso Robles	89.3	49.4	115	28	0.1	0.0
Petaluma	81.8	51.6	109	31	0.1	0.0
Red Bluff	91.3	59.2	118	41	0.2	n/a
Redding	91.6	58.3	116	39	0.4	n/a
Riverside	92.2	61.6	117	37	0.1	n/a
Sacramento	88.3	56.5	114	42	0.1	n/a
Salinas	74.4	54.5	109	36	0.1	n/a
San Diego	76.8	65.9	111	50	0.1	n/a
San Francisco	70.8	55.9	106	48	0.1	n/a
San Jacinto	93.4	60.1	116	35	0.3	0.0
San Jose	81.1	57.5	109	35	0.1	n/a
San Luis Obispo	80.5	53.5	117	38	0.1	n/a
San Rafael	79.5	54.1	110	32	0.1	0.0
Santa Ana	84.9	63.4	111	40	0.1	0.0
Santa Barbara	75.4	55.9	108	42	0.1	n/a
Santa Cantalina Island	78.2	62.6	110	48	0.1	n/a
Santa Cruz	75.5	53.2	110	30	0.1	0.0
Santa Maria	75.4	53.3	106	32	0.1	n/a
Santa Monica	74.2	62.6	103	40	0.1	n/a
Santa Rosa	82.9	50.4	114	30	0.1	n/a
Sequoia National Park	70.1	39.0	91	19	0.6	0.0
Sonora	87.8	51.3	110	35	0.2	0.0
St. Helena	86.5	53.1	113	33	0.1	0.0
Stockton	89.5	57.1	115	41	0.1	n/a
Tahoe City	71.6	40.7	90	21	0.4	0.1
Truckee	72.9	43.6	95	16	0.6	n/a
Twentynine Palms	97.5	66.5	114	38	0.4	0.0
Ukiah	88.1	51.0	117	30	0.2	n/a
Vacaville	90.2	56.1	115	32	0.1	n/a
Victorville	92.8	57.2	113	30	0.2	0.0
Visalia	89.0	60.9	110	32	0.1	0.0
Watsonville	75.0	52.6	110	32	0.1	n/a
Yreka	84.3	44.9	107	20	0.4	0.0