Saint Louis Weather in August

What's the weather like in Saint Louis (Missouri) in August 2024?

The climate in Saint Louis during August can be summarized as hot, humid and reasonably dry.

August is in the summer in Saint Louis and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a muggy 31°C (87°F), whilst at night 19°C (66°F) is normal.

Saint Louis weather averages (imperial / metric)
Daytime temperature 30.6°C 87.1°F
Nightly temperature 19°C 66.2°F
Average temperature 24.8°C 76.6°F
Daily sunshine 9.5 hrs
Avg rainfall 75 mm 3 ins
Rainy days 8 days
Sea temperature 22.6°C 72.7°F
Humidity 70%
Windspeed 13.3kph 8 mph

On average August is the 5th driest month of the year in Saint Louis with around 75mm 3 inches of rain making it a reasonably dry 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 9.5 hours of sunshine per day.

August temperatures in Saint Louis

Saint Louis average temperature in August

August rainfall

Saint Louis average rain in August

August hourly sunshine

Saint Louis average rain in August

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 Saint Louis in August 2024.

Other monthly averages

Best places to visit in August

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Saint Louis weather stats

Saint Louis weather statistics
Hottest month: July 31.4°C 88.5°F
Driest month: January 46mm 1.8ins
Sunniest month: July 10.8hrs
Coldest month: January 3.1°C 37.6°F
Wettest month: May 103mm 4.1ins
Map showing location of Saint Louis (38.62727, -90.19789) Saint Louis map pin © Google

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