Lavaca Weather Forecast

    • 77
    • 104

    Hot

    • 76
    • 107

    Hot

    • 74
    • 102

    Hot

    • 73
    • 101

    Hot

    • 74
    • 102

    Hot

    • 74
    • 103

    Hot

Today 18 Aug North and Central Sebastian

Sunny, hot with Highs around 104. Southeast Winds around 5 Mph, becoming northwest around 5 Mph this afternoon. Heat index Values up to 110.

Tonight 18 Aug North and Central Sebastian

Mostly clear. 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

    70.6 °F

  • Average August

    88.4 °F

  • Highest 16 August, 2026

    105.1 °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

    76.4 °F
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