Bellevue weather in September (Washington State, United States of America)

What kind of weather does September bring to Bellevue? Want to know if this month is ideal for visiting? Our guide provides detailed weather information.

Temperatures

During September, Bellevue experiences perfect weather, with pleasant temperatures and moderate rainfall. September is typically considered a summer month. Daytime temperatures generally peak at 22°C, but after sunset, they often decrease to around 11°C.

Precipitation

Bellevue in September usually receives moderate rainfall, averaging around 56 mm for the month. When we look at the climate data from the last 30 years, you can expect around 10 days of rain.

Average sunshine

Expect sunny days throughout the month, with an estimated 220 hours of sunshine. Making it a pleasant time to visit Bellevue.

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

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

 

Bellevue, monthly averages in September

Min Temperature 11°C  

Max Temperature 22°C  

Chance of Rain 34%  

Precipitation 56 mm  

Rainy days 10 days  

Humidity 73% *  

Windspeed 14 km/h *  

Sunshine 220 hours *  

Percentage Sunshine 59% *  

Data from: Seattle, the United States of America (19 KM, 12 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

Map not visible? Whoops sorry! Please refresh the page.

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?

For visitors traveling to Bellevue, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes.

What To Do

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

Cycling

10/10

Walking

10/10

Barbeque

9/10

Camping

8/10

Outdoor sports

10/10

Interested in more climate information?

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

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.