Napa weather in September (California, United States of America)
What can you expect from the weather in Napa during September? Check out this comprehensive weather guide.
In Napa the weather in September is generally perfect, with high temperatures and almost no rainfall. September is a summer month. Throughout the day, temperatures typically settle at around 30°C. But by evening, they drop to around 12°C. Often, it stands out as the year's warmest month. With this in mind, cool breathable fabrics will make navigating the heat much more bearable. Always be ready to embrace the warmth while staying cool and protected.
Napa in September usually receives almost no rainfall, averaging around 3.8 mm for the month. Rain is expected on roughly 1 day.
The city usually sees around 275 hours of sunlight, indicating many sunny days.
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, February and December tend to have less optimal conditions.
For an in-depth look at the yearly conditions, visit our specialized Napa climate page with graphs.
Napa, monthly averages in September
Where to go in the United States of America in September
Find out more about the weather in the United States of America in September and which places have the best weather conditions in this month.
So, what should you wear in Napa in September?
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 in September.
Interested in more climate information?
Weather and Climate provides you with all the information you need about the climate in Napa.
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 climate conditions. Find out where to go with our weather planner.