Fort Smith Weather Forecast

    • 78
    • 102

    Hot

    • 78
    • 104

    Hot

    • 78
    • 104

    Hot

    • 77
    • 104

    Hot

    • 78
    • 102

    Hot

    • 78
    • 101

    Hot

Today 4 Sep North and Central Sebastian

Sunny, hot with Highs around 101. South Winds 5 to 10 Mph. Heat index Values up to 109.

Tonight 4 Sep North and Central Sebastian

Clear. Lows in the mid 70s. Southeast Winds around 5 Mph.

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Fort Smith Temperature Statistics

September Temperature

Fort Smith Regional Airport (3.7 miles)

  • Lowest 1 September, 2026

    77 °F

  • Average September

    90.5 °F

  • Highest 1 September, 2026

    104 °F

Climate (2021–2026)

Fort Smith Regional Airport (3.7 miles)

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  • Average Low 2021–2026

    54.3 °F

  • Average 2021–2026

    65 °F

  • Average High 2021–2026

    76.5 °F
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