Jamestown Weather in September

What's the weather like in Jamestown (Tennessee) in September 2025?

The climate in Jamestown during September can be summarized as warm and damp.

September is in the fall / autumn in Jamestown and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 26°C (79°F), whilst at night 13°C (56°F) is normal.

Jamestown weather averages (imperial / metric)
Daytime temperature 25.9°C 78.6°F
Nightly temperature 13.1°C 55.6°F
Average temperature 19.5°C 67.1°F
Daily sunshine 7.9 hrs
Avg rainfall 100 mm 4 ins
Rainy days 9 days
Sea temperature 24.1°C 75.4°F
Humidity 76%
Windspeed 10.1kph 6 mph

On average September is the 2nd driest month of the year in Jamestown with around 100mm 4 inches of rain making it a damp 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 7.9 hours of sunshine per day.

September temperatures in Jamestown

Jamestown average temperature in September

September rainfall

Jamestown average rain in September

September hourly sunshine

Jamestown 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 Jamestown in September 2025.

Other monthly averages

Best places to visit in September

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Jamestown weather stats

Jamestown weather statistics
Hottest month: July 29.3°C 84.7°F
Driest month: October 78mm 3.1ins
Sunniest month: June 9.6hrs
Coldest month: January 5.6°C 42.1°F
Wettest month: March 136mm 5.4ins
Map showing location of Jamestown (36.42757, -84.93189) Jamestown map pin © Google

Locations nearby

Top United States locations