Mercedes District Settling Basin Weather Forecast

    • 77
    • 99

    Hot

    • 77
    • 100

    Hot

    • 77
    • 100

    Hot

    • 78
    • 100

    Hot

    • 78
    • 99

    Hot

    • 78
    • 97

    Hot

Today 31 Jul Southern Hidalgo

Mostly sunny. Hot with Highs around 100. Southeast Winds 5 to 10 Mph. Heat index Values up to 107.

Tonight 31 Jul Southern Hidalgo

Clear. Lows in the upper 70s. Southeast Winds 10 to 15 Mph. Heat index Values up to 105 early this evening.

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Mercedes District Settling Basin Temperature Statistics

July Temperature

Harlingen, Rio Grande Valley International Airport (18.6 miles)

  • Lowest 29 July, 2025

    70 °F

  • Average July

    85.7 °F

  • Highest 24 July, 2025

    100.7 °F

Climate (2020–Present)

Harlingen, Rio Grande Valley International Airport (18.6 miles)

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  • Average Low 2020–2025

    65.4 °F

  • Average 2020–2025

    75.2 °F

  • Average High 2020–2025

    86 °F
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