Port Lavaca Weather Forecast

Today 5 Aug Coastal Calhoun

Sunny. Highs in the lower 90s. South Winds 5 to 10 Mph, increasing to 10 to 15 Mph this afternoon.

Tonight 5 Aug Coastal Calhoun

Mostly clear. Lows in the lower 80s. Southeast Winds 10 to 15 Mph, Diminishing to 5 to 10 Mph after midnight.

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Port Lavaca Temperature Statistics

August Temperature

Palacios Municipal Airport (23 miles)

  • Lowest 3 August, 2026

    78.1 °F

  • Average August

    87.7 °F

  • Highest 2 August, 2026

    98.7 °F

Climate (2021–2026)

Palacios Municipal Airport (23 miles)

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  • Average Low 2021–2026

    65.6 °F

  • Average 2021–2026

    73.2 °F

  • Average High 2021–2026

    81.1 °F
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