Vandalia Weather in August

What's the weather like in Vandalia (Illinois) in August 2024?

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

August is in the summer in Vandalia and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a muggy 30°C (86°F), whilst at night 18°C (63°F) is normal.

Vandalia weather averages (imperial / metric)
Daytime temperature 30°C 85.9°F
Nightly temperature 17.5°C 63.4°F
Average temperature 23.7°C 74.7°F
Daily sunshine 10 hrs
Avg rainfall 67 mm 2.6 ins
Rainy days 8 days
Sea temperature 22.8°C 73.1°F
Humidity 72%
Windspeed 12.6kph 8 mph

On average August is the 4th driest month of the year in Vandalia with around 67mm 2.6 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 10 hours of sunshine per day.

August temperatures in Vandalia

Vandalia average temperature in August

August rainfall

Vandalia average rain in August

August hourly sunshine

Vandalia 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 Vandalia in August 2024.