Temperature in California in September

Daytime highs, nighttime lows and the warmest cities in California, the United States of America this September.

California, the United States of America, a region in the United States of America, experiences maximum daytime temperatures in September ranging from 16°C (61°F) in Point Arena to 42°C (108°F) in Furnace Creek. Nighttime temperatures generally drop to 25°C (77°F) in Furnace Creek and 10°C (50°F) in Point Arena. On average, September is the month with the highest temperature of the year in California, the United States of America.

What is the temperature of the different cities in California, the United States of America in September?

Discover the typical September temperatures for the most popular locations of California on the map below. Detailed insights are just a click away.

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Check the conditions for any month of the year.

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For a detailed overview over the year and the best time to visit California, check out our California's climate page.

See also: California weather by month.

Best Places to Visit in California in September

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across California.

Conditions Temperatures Precipitation
Avg daytime high -5°C (23°F) cold → 32°C (90°F) hot

Marker color shows the average daytime high temperature in September: blue is cold, red is hot.

See all September weather averages, cities and regions in California

California temperatures in September: frequently asked questions

How hot does it get in California, the United States of America in September?

Expect daytime temperatures around 25°C (77°F) in Los Angeles. That makes September a high month for California, the United States of America.

How cold does it get at night in California, the United States of America in September?

Average overnight lows in California, the United States of America during September sit near 18°C (64°F) in Los Angeles.

What is the warmest city in September in California, the United States of America?

From a thorough analysis of our records, Furnace Creek clearly dominates in terms of high temperatures. The city witnesses daytime temperatures hovering around 42°C (108°F), and evenings that remain near 25°C (77°F).

What is the coldest city in September in California, the United States of America?

In our database, Point Arena is the chilliest city in September in California, the United States of America. Daytime temperatures typically peak at 16°C (61°F), while the nighttime lows hover around 10°C (50°F).

How much sun does California, the United States of America get in September?

Los Angeles enjoys approximately 278 hours of sunshine, offering a mostly sunny climate that adds a pleasant and vibrant feel to the month.

What is the water temperature in September?

Across California, the United States of America, sea temperatures in September range from cold at 14°C (57°F) in San Francisco to good at 20°C (68°F) in Palm Springs — so swimming conditions depend on which coast you pick.

Interested in more climate information?

We have much more information about the climate in California.

Weather and climate has detailed information for every country in the world. Are you going to the United States of America? Get detailed historical weather averages for many cities in the United States of America.

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