Richmond Weather in September

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

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

September is in the fall / autumn in Richmond and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 26°C (79°F), whilst at night 14°C (57°F) is normal.

Richmond weather averages (imperial / metric)
Daytime temperature 26.4°C 79.4°F
Nightly temperature 13.7°C 56.6°F
Average temperature 20°C 68°F
Daily sunshine 8.5 hrs
Avg rainfall 112 mm 4.4 ins
Rainy days 8 days
Sea temperature 20.3°C 68.5°F
Humidity 71%
Windspeed 15.1kph 9 mph

On average September is the 4th wettest month of the year in Richmond with around 112mm 4.4 inches of rain making it a 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 8.5 hours of sunshine per day.

September temperatures in Richmond

Richmond average temperature in September

September rainfall

Richmond average rain in September

September hourly sunshine

Richmond 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 Richmond 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

Richmond weather stats

Richmond weather statistics
Hottest month: July 31.7°C 89.1°F
Driest month: January 33mm 1.3ins
Sunniest month: July 11.3hrs
Coldest month: January 1.5°C 34.7°F
Wettest month: May 120mm 4.7ins
Map showing location of Richmond (39.27862, -93.97689) Richmond map pin © Google

Locations nearby

Top United States locations