Dayton Weather Forecast

    • 75
    • 100

    Chance Thunderstorms

    • 73
    • 101

    Slight Chance Thunderstorms

    • 70
    • 101

    Hot

    • 72
    • 101

    Hot

    • 72
    • 100

    Hot

    • 69
    • 96

    Chance Rain Showers

    • 68
    • 93

    Slight Chance Thunderstorms

Today 16 Sep Southern Sebastian

Mostly sunny. A slight chance of Showers and Thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 20 percent.

Tonight 16 Sep Southern Sebastian

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

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Dayton Temperature Statistics

September Temperature

Fort Smith Regional Airport (16.8 miles)

  • Lowest 11 September, 2026

    74.6 °F

  • Average September

    90.1 °F

  • Highest 4 September, 2026

    106.6 °F

Climate (2021–2026)

Fort Smith Regional Airport (16.8 miles)

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  • Average Low 2021–2026

    54.4 °F

  • Average 2021–2026

    65.1 °F

  • Average High 2021–2026

    76.6 °F
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