Weslaco Weather Forecast

    • 78
    • 100

    Slight Chance Thunderstorms

    • 78
    • 99

    Slight Chance Thunderstorms

    • 78
    • 99

    Slight Chance Thunderstorms

    • 78
    • 97

    Chance Thunderstorms

    • 78
    • 98

    Hot

    • 78
    • 99

    Hot

Today 6 Sep Southern Hidalgo

Sunny with a slight chance of Showers and Thunderstorms. Hot with Highs around 101. Southeast Winds 10 to 15 Mph with Gusts up to 20 Mph. Chance of rain 20 percent. Heat index Values up to 110.

Tonight 6 Sep Southern Hidalgo

Mostly clear. A slight chance of Showers and Thunderstorms in the evening. Humid with Lows in the upper 70s. Southeast Winds 10 to 15 Mph with Gusts up to 20 Mph. Chance of rain 20 percent. Heat index Values up to 106 early in the evening.

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Weslaco Temperature Statistics

September Temperature

McAllen, Miller International Airport (15.5 miles)

  • Lowest 1 September, 2026

    80.7 °F

  • Average September

    93.6 °F

  • Highest 2 September, 2026

    106.6 °F

Climate (2021–2026)

McAllen, Miller International Airport (15.5 miles)

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  • Average Low 2021–2026

    68.3 °F

  • Average 2021–2026

    78.1 °F

  • Average High 2021–2026

    88.8 °F
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