Winona Weather in September

What's the weather like in Winona (Mississippi) in September 2025?

The climate in Winona during September can be summarized as hot, humid and a little damp.

September is in the fall / autumn in Winona and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a muggy 30°C (86°F), whilst at night 17°C (63°F) is normal.

Winona weather averages (imperial / metric)
Daytime temperature 30.2°C 86.3°F
Nightly temperature 17.1°C 62.7°F
Average temperature 23.6°C 74.5°F
Daily sunshine 8.4 hrs
Avg rainfall 90 mm 3.6 ins
Rainy days 8 days
Sea temperature 25.6°C 78.1°F
Humidity 75%
Windspeed 10.8kph 7 mph

On average September is the 4th driest month of the year in Winona with around 90mm 3.6 inches of rain making it a a little damp 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 8.4 hours of sunshine per day.

September temperatures in Winona

Winona average temperature in September

September rainfall

Winona average rain in September

September hourly sunshine

Winona 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 Winona 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

Winona weather stats

Winona weather statistics
Hottest month: July 32.9°C 91.2°F
Driest month: August 80mm 3.1ins
Sunniest month: June 10.5hrs
Coldest month: January 10.9°C 51.6°F
Wettest month: March 148mm 5.8ins
Map showing location of Winona (33.48207, -89.72814) Winona map pin © Google

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