Lavaca Weather Forecast

    • 76
    • 105

    Slight Chance Thunderstorms

    • 73
    • 102

    Hot

    • 71
    • 103

    Hot

    • 76
    • 103

    Hot

    • 73
    • 100

    Hot

    • 72
    • 98

    Slight Chance Thunderstorms

Today 6 Sep North and Central Sebastian

Sunny. Scattered Showers and Thunderstorms in the afternoon. Hot with Highs around 105. North Winds around 5 Mph, becoming east around 5 Mph in the afternoon. Chance of rain 30 percent. Heat index Values up to 112.

Tonight 6 Sep North and Central Sebastian

Mostly clear. Lows in the mid 70s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lavaca Temperature Statistics

September Temperature

Fort Smith Regional Airport (10.6 miles)

  • Lowest 2 September, 2026

    75.7 °F

  • Average September

    90.2 °F

  • Highest 1 September, 2026

    105.7 °F

Climate (2021–2026)

Fort Smith Regional Airport (10.6 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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