Lavaca Weather Forecast

    • 76
    • 100

    Hot

    • 74
    • 99

    Chance Thunderstorms

    • 75
    • 98

    Hot

    • 76
    • 98

    Hot

    • 76
    • 98

    Hot

    • 76
    • 98

    Hot

Today 6 Aug North and Central Sebastian

Sunny, hot with Highs around 100. Southwest Winds around 5 Mph. Heat index Values up to 108.

Tonight 6 Aug North and Central Sebastian

Partly cloudy. Lows in the upper 70s. Southeast Winds around 5 Mph.

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Lavaca Temperature Statistics

August Temperature

Fort Smith Regional Airport (10.6 miles)

  • Lowest 2 August, 2026

    70 °F

  • Average August

    82.1 °F

  • Highest 3 August, 2026

    95 °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

    64.9 °F

  • Average High 2021–2026

    76.3 °F
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