Port Mansfield Channel Entrance Weather Forecast

    • 82
    • 95

    Mostly Sunny

    • 82
    • 95

    Mostly Sunny

    • 81
    • 95

    Rain Showers Likely

    • 82
    • 94

    Chance Rain Showers

    • 81
    • 91

    Mostly Sunny

    • 81
    • 91

    Slight Chance Thunderstorms

Today 14 Sep Willacy Island

Sunny with Highs in the mid 90s. Southeast Winds 15 to 20 Mph with Gusts up to 25 Mph. Heat index Values up to 113.

Tonight 14 Sep Willacy Island

Mostly clear with a slight chance of Showers and Thunderstorms. Near steady temperature in the mid 80s. Southeast Winds around 10 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Port Mansfield Channel Entrance Temperature Statistics

September Temperature

Port Isabel, Port Isabel-Cameron County Airport (28 miles)

  • Lowest 1 September, 2026

    77.6 °F

  • Average September

    88.4 °F

  • Highest 10 September, 2026

    100.7 °F

Climate (2021–2026)

Port Isabel, Port Isabel-Cameron County Airport (28 miles)

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  • Average Low 2021–2026

    68.8 °F

  • Average 2021–2026

    76.4 °F

  • Average High 2021–2026

    84.1 °F
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