Renton Weather in September

What's the weather like in Renton (Washington) in September 2024?

The climate in Renton during September can be summarized as mild and reasonably dry.

September is in the fall / autumn in Renton and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 21°C (70°F), whilst at night 10°C (50°F) is normal.

Renton weather averages (imperial / metric)
Daytime temperature 20.9°C 69.6°F
Nightly temperature 10.1°C 50.2°F
Average temperature 15.5°C 59.9°F
Daily sunshine 8 hrs
Avg rainfall 51 mm 2 ins
Rainy days 9 days
Sea temperature 12.8°C 55.1°F
Humidity 73%
Windspeed 11.9kph 7 mph

On average September is the 5th driest month of the year in Renton with around 51mm 2 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.

On the flip side this corresponds to an average of 8 hours of sunshine per day.

September temperatures in Renton

Renton average temperature in September

September rainfall

Renton average rain in September

September hourly sunshine

Renton average rain in September

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Renton in September 2024.

Other monthly averages

Best places to visit in September

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Renton weather stats

Renton weather statistics
Hottest month: July 24°C 75.2°F
Driest month: July 21mm 0.8ins
Sunniest month: July 10.9hrs
Coldest month: January 7°C 44.6°F
Wettest month: December 156mm 6.1ins
Map showing location of Renton (47.48288, -122.21707) Renton map pin © Google

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