Fort Smith Weather in August

The climate in Fort Smith during August can be summarized as hot and a little damp.

August is in the summer in Fort Smith and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a warm 34°C (92°F), whilst at night 20°C (68°F) is normal.

On average August is the 3rd driest month of the year in Fort Smith with around 80mm 3.1 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 7 days, although this may vary considerably.

On the flip side this corresponds to an average of 10.2 hours of sunshine per day.

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 Fort Smith in August 2025.