Lavaca Bay Weather Forecast

    • 76
    • 88

    Slight Chance Rain Showers

    • 77
    • 93

    Mostly Sunny

    • 81
    • 88

    Slight Chance Thunderstorms

    • 80
    • 88

    Slight Chance Thunderstorms

    • 80
    • 89

    Slight Chance Thunderstorms

    • 81
    • 90

    Slight Chance Thunderstorms

Today 18 Sep Coastal Calhoun

Partly cloudy with a slight chance of Showers and Thunderstorms this Morning, then sunny this afternoon. Highs in the lower 90s. Northeast Winds 5 to 10 Mph, increasing to east 10 to 15 Mph this afternoon. Chance of rain 20 percent.

Tonight 18 Sep Coastal Calhoun

Clear in the Evening, then partly cloudy with a slight chance of Showers after midnight. Lows in the upper 70s. East Winds 10 to 15 Mph, Diminishing to 5 to 10 Mph after midnight. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lavaca Bay Temperature Statistics

September Temperature

Palacios Municipal Airport (20.5 miles)

  • Lowest 1 September, 2026

    76.6 °F

  • Average September

    87.6 °F

  • Highest 7 September, 2026

    95.6 °F

Climate (2021–2026)

Palacios Municipal Airport (20.5 miles)

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  • Average Low 2021–2026

    65.6 °F

  • Average 2021–2026

    73.3 °F

  • Average High 2021–2026

    81.1 °F
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