Fort Smith Weather Forecast

    • 54
    • 59

    Cloudy

    • 30
    • 63

    Chance Rain Showers

    • 41
    • 56

    Mostly Sunny

    • 45
    • 68

    Mostly Sunny

    • 46
    • 64

    Mostly Cloudy

    • 47
    • 61

    Mostly Cloudy

Today 17 Dec Sebastian

Mostly cloudy. Highs in the lower 60s. Southeast Winds 5 to 10 Mph.

Tonight 17 Dec Sebastian

Cloudy. A chance of Showers in the Evening, then Showers likely after midnight. Not as cool with Lows in the lower 50s. Temperature rising into the upper 50s after midnight. South Winds 10 to 15 Mph. Gusts up to 30 Mph after midnight. Chance of rain 70 percent.

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Fort Smith Temperature Statistics

December Temperature

Fort Smith Regional Airport (3.7 miles)

  • Lowest 14 December, 2025

    24.1 °F

  • Average December

    41.3 °F

  • Highest 12 December, 2025

    69.1 °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

    75.3 °F
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