Palo Alto weather in September (California, United States of America)

How does the September weather in Palo Alto compare to other months? Use this page to get an overview of the month’s weather conditions.

Temperatures

Experience perfect weather in Palo Alto in September, characterized by high temperatures and almost no rainfall. During September, you’ll experience the summer season. Daytime temperatures are expected to be around 26°C, cooling off to about 13°C at night. This month features high temperatures, marking it as the warmest. Prepare with summer clothes and essentials to enjoy the sun to the fullest.

Precipitation

Palo Alto in September usually receives almost no rainfall, averaging around 2.7 mm for the month. Delving into the climate records from the past 30 years, one can predict that nearly a single day of the month will see rainfall.

Average sunshine

Expect sunny days throughout the month, with an estimated 270 hours of sunshine. Making it a pleasant time to visit Palo Alto.

If you're inclined towards comfortable temperatures and drier conditions, September is a prime time to visit Palo Alto. April, May, June, July, August, September and October typically offer the best circumstances. While January, February and December tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Palo Alto climate page with graphs.

 

Palo Alto, monthly averages in September

Min Temperature 13°C  

Max Temperature 26°C  

Chance of Rain 3%  

Precipitation 2.7 mm  

Rainy days a single day  

Humidity 73% *  

Sunshine 270 hours *  

Percentage Sunshine 73% *  

Data from: San Francisco, the United States of America (27 KM, 17 Miles).

Where to go in the United States of America in September

Find out more about the weather in the United States of America and which places have the best travel conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

10/10

Cycling

8/10

Walking

8/10

Barbeque

10/10

Camping

10/10

Outdoor sports

8/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Palo Alto.

Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.