Fort Smith Weather Forecast

    • 73
    • 89

    Chance Rain Showers

    • 75
    • 97

    Slight Chance Thunderstorms

    • 76
    • 99

    Hot

    • 76
    • 98

    Hot

    • 76
    • 99

    Hot

    • 75
    • 99

    Slight Chance Thunderstorms

Today 11 Sep North and Central Sebastian

Partly sunny. Showers likely with a chance of Thunderstorms in the Morning, then a chance of Showers with a slight chance of Thunderstorms in the afternoon. Highs in the lower 90s. Southeast Winds around 5 Mph. Chance of rain 60 percent.

Tonight 11 Sep North and Central Sebastian

Showers with a chance of Thunderstorms. Lows in the lower 70s. East Winds around 5 Mph. Chance of rain 80 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Fort Smith Temperature Statistics

September Temperature

Fort Smith Regional Airport (3.7 miles)

  • Lowest 2 September, 2026

    75.7 °F

  • Average September

    91.2 °F

  • Highest 4 September, 2026

    106.6 °F

Climate (2021–2026)

Fort Smith Regional Airport (3.7 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    54.4 °F

  • Average 2021–2026

    65 °F

  • Average High 2021–2026

    76.5 °F
Get WillyWeather+ to remove ads