Leavenworth Weather in September

What's the weather like in Leavenworth (Kansas) in September 2025?

The climate in Leavenworth during September can be summarized as warm, humid and wet.

September is in the fall / autumn in Leavenworth and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a muggy 27°C (80°F), whilst at night 14°C (58°F) is normal.

Leavenworth weather averages (imperial / metric)
Daytime temperature 26.6°C 79.9°F
Nightly temperature 14.2°C 57.6°F
Average temperature 20.4°C 68.7°F
Daily sunshine 8.5 hrs
Avg rainfall 136 mm 5.4 ins
Rainy days 8 days
Sea temperature 20.1°C 68.2°F
Humidity 71%
Windspeed 15.5kph 10 mph

On average September is the 2nd wettest month of the year in Leavenworth with around 136mm 5.4 inches of rain making it a wet 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 Leavenworth

Leavenworth average temperature in September

September rainfall

Leavenworth average rain in September

September hourly sunshine

Leavenworth 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 Leavenworth 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

Leavenworth weather stats

Leavenworth weather statistics
Hottest month: July 32°C 89.6°F
Driest month: January 30mm 1.2ins
Sunniest month: July 11.3hrs
Coldest month: January 2.9°C 37.2°F
Wettest month: May 137mm 5.4ins
Map showing location of Leavenworth (39.31111, -94.92246) Leavenworth map pin © Google

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