Lebanon Weather in September

What's the weather like in Lebanon (Missouri) in September 2025?

The climate in Lebanon during September can be summarized as warm, humid and damp.

September is in the fall / autumn in Lebanon 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.

Lebanon weather averages (imperial / metric)
Daytime temperature 26.8°C 80.2°F
Nightly temperature 14.4°C 57.9°F
Average temperature 20.6°C 69.1°F
Daily sunshine 8.4 hrs
Avg rainfall 101 mm 4 ins
Rainy days 9 days
Sea temperature 21.8°C 71.3°F
Humidity 73%
Windspeed 14.4kph 9 mph

On average September is the 3rd wettest month of the year in Lebanon with around 101mm 4 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 8.4 hours of sunshine per day.

September temperatures in Lebanon

Lebanon average temperature in September

September rainfall

Lebanon average rain in September

September hourly sunshine

Lebanon 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 Lebanon 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

Lebanon weather stats

Lebanon weather statistics
Hottest month: July 31.7°C 89.1°F
Driest month: January 44mm 1.7ins
Sunniest month: July 10.9hrs
Coldest month: January 4.8°C 40.6°F
Wettest month: May 120mm 4.7ins
Map showing location of Lebanon (37.6806, -92.66379) Lebanon map pin © Google

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