Matagorda Island Weather Forecast

    • 80
    • 90

    Slight Chance Thunderstorms

    • 81
    • 90

    Slight Chance Thunderstorms

    • 81
    • 90

    Slight Chance Thunderstorms

    • 82
    • 90

    Mostly Sunny

    • 81
    • 90

    Chance Rain Showers

    • 81
    • 91

    Slight Chance Thunderstorms

Today 18 Sep Calhoun Islands

Partly cloudy this Morning, then clearing. A slight chance of Thunderstorms. A chance of Showers, mainly this morning. Highs around 90. East Winds 10 to 15 Mph. Chance of rain 40 percent.

Tonight 18 Sep Calhoun Islands

Mostly clear in the Evening, then partly cloudy with a slight chance of Showers and Thunderstorms after midnight. Lows around 80. East Winds 10 to 15 Mph, becoming southeast 5 to 10 Mph after midnight. Chance of rain 20 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Matagorda Island Temperature Statistics

September Temperature

Rockport Aransas County Airport (19.9 miles)

  • Lowest 10 September, 2026

    74.6 °F

  • Average September

    87.7 °F

  • Highest 4 September, 2026

    96.7 °F

Climate (2021–2026)

Rockport Aransas County Airport (19.9 miles)

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

  • Average Low 2021–2026

    67.7 °F

  • Average 2021–2026

    74.8 °F

  • Average High 2021–2026

    82.1 °F
Get WillyWeather+ to remove ads