Charleston Weather Forecast

    • 68
    • 94

    Chance Rain Showers

    • 67
    • 93

    Chance Thunderstorms

    • 66
    • 88

    Chance Thunderstorms

    • 67
    • 88

    Chance Thunderstorms

    • 67
    • 89

    Chance Thunderstorms

    • 65
    • 87

    Chance Thunderstorms

Today 17 Sep Franklin

Sunny. A chance of Showers with a slight chance of Thunderstorms in the afternoon. Highs in the lower 90s. Northwest Winds around 5 Mph. Chance of rain 30 percent.

Tonight 17 Sep Franklin

Mostly clear. Near steady temperature around 70. North Winds around 5 Mph.

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Charleston Temperature Statistics

September Temperature

Fort Smith Regional Airport (18.6 miles)

  • Lowest 7 September, 2025

    55.9 °F

  • Average September

    75.3 °F

  • Highest 12 September, 2025

    95 °F

Climate (2020–Present)

Fort Smith Regional Airport (18.6 miles)

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  • Average Low 2020–2025

    53.5 °F

  • Average 2020–2025

    63.8 °F

  • Average High 2020–2025

    75.1 °F
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