Jonesborough Weather in September

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

The climate in Jonesborough during September can be summarized as warm and a little damp.

September is in the fall / autumn in Jonesborough and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 26°C (78°F), whilst at night 13°C (55°F) is normal.

Jonesborough weather averages (imperial / metric)
Daytime temperature 25.7°C 78.3°F
Nightly temperature 12.7°C 54.9°F
Average temperature 19.2°C 66.6°F
Daily sunshine 7.6 hrs
Avg rainfall 84 mm 3.3 ins
Rainy days 9 days
Sea temperature 24.2°C 75.6°F
Humidity 78%
Windspeed 9.7kph 6 mph

On average September is the 4th driest month of the year in Jonesborough with around 84mm 3.3 inches of rain making it a a little 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 7.6 hours of sunshine per day.

September temperatures in Jonesborough

Jonesborough average temperature in September

September rainfall

Jonesborough average rain in September

September hourly sunshine

Jonesborough 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 Jonesborough 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

Jonesborough weather stats

Jonesborough weather statistics
Hottest month: July 28.6°C 83.5°F
Driest month: October 71mm 2.8ins
Sunniest month: April 8.7hrs
Coldest month: January 6.4°C 43.5°F
Wettest month: July 110mm 4.3ins
Map showing location of Jonesborough (36.29427, -82.47348) Jonesborough map pin © Google

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