Fort Smith Weather Forecast

    • 35
    • 58

    Mostly Sunny

    • 47
    • 63

    Slight Chance Rain

    • 42
    • 60

    Mostly Cloudy

    • 38
    • 58

    Mostly Sunny

    • 42
    • 60

    Partly Sunny

    • 47
    • 69

    Mostly Cloudy

Today 31 Dec Sebastian

Sunny. Not as cool with Highs in the upper 50s. West Winds around 5 Mph.

Tonight 31 Dec Sebastian

Mostly clear. Lows in the mid 30s. Southwest Winds around 5 Mph.

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Fort Smith Temperature Statistics

December Temperature

Fort Smith Regional Airport (3.7 miles)

  • Lowest 15 December, 2025

    21.9 °F

  • Average December

    47.5 °F

  • Highest 27 December, 2025

    82.9 °F

Climate (2020–Present)

Fort Smith Regional Airport (3.7 miles)

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  • Average Low 2020–2025

    53.8 °F

  • Average 2020–2025

    64.1 °F

  • Average High 2020–2025

    75.4 °F
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