Leon Weather in September

What's the weather like in Leon (Iowa) in September 2025?

The climate in Leon during September can be summarized as mild and damp.

September is in the fall / autumn in Leon and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 24°C (76°F), whilst at night 11°C (53°F) is normal.

Leon weather averages (imperial / metric)
Daytime temperature 24.4°C 75.9°F
Nightly temperature 11.4°C 52.5°F
Average temperature 17.9°C 64.2°F
Daily sunshine 8.5 hrs
Avg rainfall 104 mm 4.1 ins
Rainy days 9 days
Sea temperature 19.6°C 67.3°F
Humidity 71%
Windspeed 15.5kph 10 mph

On average September is the 5th wettest month of the year in Leon with around 104mm 4.1 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 8.5 hours of sunshine per day.

September temperatures in Leon

Leon average temperature in September

September rainfall

Leon average rain in September

September hourly sunshine

Leon 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 Leon 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

Leon weather stats

Leon weather statistics
Hottest month: July 30°C 86°F
Driest month: January 24mm 0.9ins
Sunniest month: July 11.4hrs
Coldest month: January -1.1°C 30°F
Wettest month: July 116mm 4.6ins
Map showing location of Leon (40.73972, -93.74772) Leon map pin © Google

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