Sonoma weather in September (California, United States of America)

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

Temperatures

Experience perfect weather in Sonoma in September, characterized by high temperatures and almost no rainfall. September is part of the summer season. Anticipate daytime temperatures around 29°C, while night temperatures can drop to 11°C.

Precipitation

Sonoma in September usually receives almost no rainfall, averaging around 3.1 mm for the month. Rain is expected on roughly a single day.

Average sunshine

Enjoy a sunny month with about 275 hours of sunshine, providing a cheerful and lively atmosphere.

So this is a great month to visit if you prefer dry days with pleasant temperatures. April, May, June, July, August, September and October typically offer the most optimal weather. In contrast, January, February and December tend to have less optimal conditions.

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

 

Sonoma, monthly averages in September

Min Temperature 11°C  

Max Temperature 29°C  

Chance of Rain 3%  

Precipitation 3.1 mm  

Rainy days a single day  

Sunshine 275 hours *  

Percentage Sunshine 77% *  

Data from: Healdsburg, the United States of America (50 KM, 31 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 Sonoma.

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.