Lafayette Weather in September

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

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

September is in the fall / autumn in Lafayette 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.

Lafayette weather averages (imperial / metric)
Daytime temperature 25.5°C 77.9°F
Nightly temperature 11.5°C 52.7°F
Average temperature 18.5°C 65.3°F
Daily sunshine 8.5 hrs
Avg rainfall 73 mm 2.9 ins
Rainy days 9 days
Sea temperature 20.9°C 69.6°F
Humidity 73%
Windspeed 14kph 9 mph

On average September is the 6th wettest month of the year in Lafayette with around 73mm 2.9 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 8.5 hours of sunshine per day.

September temperatures in Lafayette

Lafayette average temperature in September

September rainfall

Lafayette average rain in September

September hourly sunshine

Lafayette 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 Lafayette 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

Lafayette weather stats

Lafayette weather statistics
Hottest month: July 29.6°C 85.3°F
Driest month: February 46mm 1.8ins
Sunniest month: July 10.8hrs
Coldest month: January 0.1°C 32.2°F
Wettest month: June 105mm 4.1ins
Map showing location of Lafayette (40.4167, -86.87529) Lafayette map pin © Google

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