Port Alto Weather Forecast

    • 79
    • 89

    Slight Chance Thunderstorms

    • 79
    • 91

    Slight Chance Thunderstorms

    • 80
    • 91

    Slight Chance Thunderstorms

    • 79
    • 89

    Slight Chance Thunderstorms

    • 79
    • 88

    Partly Sunny

    • 80
    • 88

    Mostly Sunny

Today 21 Sep Coastal Calhoun

Sunny. A slight chance of Showers and Thunderstorms this afternoon. Highs in the lower 90s. Southeast Winds around 5 Mph, increasing to 5 to 10 Mph this afternoon. Chance of rain 20 percent.

Tonight 21 Sep Coastal Calhoun

Mostly clear. Lows in the upper 70s. Southeast Winds 5 to 10 Mph, Diminishing to around 5 Mph after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Port Alto Temperature Statistics

September Temperature

Palacios Municipal Airport (10.6 miles)

  • Lowest 18 September, 2026

    75.9 °F

  • Average September

    87.5 °F

  • Highest 7 September, 2026

    95.6 °F

Climate (2021–2026)

Palacios Municipal Airport (10.6 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    65.7 °F

  • Average 2021–2026

    73.3 °F

  • Average High 2021–2026

    81.2 °F
Get WillyWeather+ to remove ads