Sweeney Lake Weather Forecast

    • 59
    • 83

    Mostly Sunny

    • 58
    • 75

    Mostly Sunny

    • 65
    • 84

    Mostly Sunny

    • 65
    • 84

    Partly Sunny

    • 64
    • 81

    Partly Sunny

    • 63
    • 81

    Mostly Sunny

    • 62
    • 81

    Mostly Sunny

Today 18 Dec Inland Cameron

Sunny. Highs in the lower 80s. South Winds 5 to 10 Mph.

Tonight 18 Dec Inland Cameron

Mostly clear. Lows in the upper 50s. Northeast Winds 5 to 10 Mph with Gusts up to 20 Mph.

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Sweeney Lake Temperature Statistics

December Temperature

Port Isabel, Port Isabel-Cameron County Airport (9.9 miles)

  • Lowest 15 December, 2025

    46.9 °F

  • Average December

    62.9 °F

  • Highest 10 December, 2025

    82.9 °F

Climate (2020–Present)

Port Isabel, Port Isabel-Cameron County Airport (9.9 miles)

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  • Average Low 2020–2025

    68.5 °F

  • Average 2020–2025

    75.8 °F

  • Average High 2020–2025

    83.5 °F
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