Port Mansfield Weather Forecast

    • 80
    • 88

    Partly Sunny

    • 81
    • 88

    Chance Rain Showers

    • 82
    • 89

    Slight Chance Thunderstorms

    • 81
    • 90

    Chance Rain Showers

    • 79
    • 91

    Rain Showers Likely

    • 76
    • 87

    Rain Showers Likely

    • 75
    • 84

    Rain Showers Likely

Today 27 Sep Coastal Willacy

Mostly sunny. Near steady temperature in the lower 90s. East Winds 10 to 15 Mph with Gusts up to 20 Mph. Heat index Values up to 107.

Tonight 27 Sep Coastal Willacy

Partly cloudy. Humid with Lows in the mid 70s. Southeast Winds 10 to 15 Mph with Gusts up to 20 Mph, becoming south around 5 Mph after midnight.

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  • Temperature Real-Time

Port Mansfield Temperature Statistics

September Temperature

Harlingen, Rio Grande Valley International Airport (26.1 miles)

  • Lowest 20 September, 2026

    71.7 °F

  • Average September

    89 °F

  • Highest 2 September, 2026

    104.6 °F

Climate (2021–2026)

Harlingen, Rio Grande Valley International Airport (26.1 miles)

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  • Average Low 2021–2026

    65.9 °F

  • Average 2021–2026

    76.1 °F

  • Average High 2021–2026

    87 °F
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