Mercedes District Settling Basin Weather Forecast

    • 59
    • 76

    Mostly Sunny

    • 67
    • 86

    Mostly Sunny

    • 67
    • 87

    Partly Sunny

    • 66
    • 84

    Partly Sunny

    • 64
    • 84

    Mostly Sunny

    • 64
    • 84

    Mostly Sunny

Today 19 Dec Southern Hidalgo

Sunny. Highs in the upper 70s. Northeast Winds 5 to 10 Mph.

Tonight 19 Dec Southern Hidalgo

Mostly clear. Lows in the upper 50s. Southeast Winds 5 to 10 Mph.

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Mercedes District Settling Basin Temperature Statistics

December Temperature

Harlingen, Rio Grande Valley International Airport (18.6 miles)

  • Lowest 9 December, 2025

    43 °F

  • Average December

    62.2 °F

  • Highest 7 December, 2025

    86 °F

Climate (2020–Present)

Harlingen, Rio Grande Valley International Airport (18.6 miles)

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  • Average Low 2020–2025

    65.5 °F

  • Average 2020–2025

    75.4 °F

  • Average High 2020–2025

    86.2 °F
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