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

How is September weather typically in Renton? Find all the essential weather information for this month in our guide.

Temperatures

For September, the weather in Renton is generally perfect, featuring pleasant temperatures and moderate rainfall. During September, you’ll experience the summer season. Expect daytime highs to reach approximately 21°C, with nighttime lows dipping to around 11°C.

Precipitation

Renton in September usually receives moderate rainfall, averaging around 54 mm for the month. The climate data from previous years indicates that there are typically about 11 days days of rain.

Average sunshine

With around 220 hours of sunshine, the days are mostly sunny. It gives a pleasant and vibrant feel to the area.

If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit. June, July, August and September generally stand out with the best circumstances. While January, February, March, November and December tend to showcase less optimal conditions.

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

 

Renton, monthly averages in September

Min Temperature 11°C  

Max Temperature 21°C  

Chance of Rain 35%  

Precipitation 54 mm  

Rainy days 11 days  

Humidity 73% *  

Windspeed 14 km/h *  

Sunshine 220 hours *  

Percentage Sunshine 59% *  

Data from: Seattle, the United States of America (8 KM, 4 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?

For visitors traveling to Renton, 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 Renton.

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.