Brookville Weather in September

What's the weather like in Brookville (Indiana) in September 2025?

The climate in Brookville during September can be summarized as warm and reasonably dry.

September is in the fall / autumn in Brookville and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 26°C (78°F), whilst at night 12°C (53°F) is normal.

Brookville weather averages (imperial / metric)
Daytime temperature 25.7°C 78.3°F
Nightly temperature 11.5°C 52.7°F
Average temperature 18.6°C 65.5°F
Daily sunshine 8.5 hrs
Avg rainfall 66 mm 2.6 ins
Rainy days 8 days
Sea temperature 21.9°C 71.4°F
Humidity 73%
Windspeed 12.6kph 8 mph

On average September is the 3rd driest month of the year in Brookville with around 66mm 2.6 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.

On the flip side this corresponds to an average of 8.5 hours of sunshine per day.

September temperatures in Brookville

Brookville average temperature in September

September rainfall

Brookville average rain in September

September hourly sunshine

Brookville 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 Brookville 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

Brookville weather stats

Brookville weather statistics
Hottest month: July 29.8°C 85.6°F
Driest month: January 61mm 2.4ins
Sunniest month: June 10.3hrs
Coldest month: January 1.9°C 35.4°F
Wettest month: May 116mm 4.6ins
Map showing location of Brookville (39.42311, -85.01274) Brookville map pin © Google

Locations nearby

Top United States locations