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Climate almanac

Fort Smith

Arkansas, United States · 35.39°, -94.40°

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What is the weather like in Fort Smith in September?

In September, Fort Smith is typically 87°F (30°C) during the day and 65°F (19°C) at night. The month brings about 2.8 in (71 mm) of precipitation in total.

  • Average high87°F (30°C)
  • Average low65°F (19°C)
  • Precipitation2.8 in (71 mm)
  • Clear or mostly clear days18
  • Based on2016-2025 daily ERA5 reanalysis data (10-year normals)