ClimateForecastSeptemberOctober >>

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

How is the weather in Renton in September? Here's what the weather might have in store during this month.

In Renton, September is characterized by pleasant temperatures and moderate rainfall. September is a summer month. Anticipate daytime temperatures around 21°C, while night temperatures can drop to 11°C.

Renton in September usually receives moderate rainfall, averaging around 54 mm for the month. Based on our climate data of the past 30 years, about 11 days of rain are anticipated.

The days are predominantly sunny, with an estimated total of around 220 hours of sunshine. This amount of sunlight does not only brightens the days but also contributes to a cheerful ambiance in the area during this month.

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 TemperatureMin Temperature 11°C  
Max TemperatureMax Temperature 21°C  
Chance of RainChance of Rain 35%  
PrecipitationPrecipitation 54 mm  
Rainy daysRainy days 11 days  
HumidityHumidity 73% *  
WindspeedWindspeed 14 km/h *  
SunshineSunshine 220 hours *  
Percentage SunshinePercentage 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 in September and which places have the best weather conditions in this month.

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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 Renton in September?

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 in September.

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 climate conditions. Find out where to go with our weather planner.