Hamilton Lake Weather Forecast

    • 83
    • 87

    Mostly Sunny

    • 83
    • 87

    Partly Sunny

    • 83
    • 87

    Partly Sunny

    • 81
    • 87

    Mostly Sunny

    • 81
    • 87

    Mostly Sunny

    • 82
    • 88

    Mostly Sunny

Today 12 Aug Coastal Refugio

Sunny. Highs in the lower 90s. South Winds 10 to 15 Mph with Gusts up to 25 Mph. Heat index Values up to 110.

Tonight 12 Aug Coastal Refugio

Mostly clear. Lows in the upper 70s. South Winds 10 to 15 Mph with Gusts up to 25 Mph.

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Hamilton Lake Temperature Statistics

August Temperature

Rockport Aransas County Airport (28.6 miles)

  • Lowest 2 August, 2026

    73.7 °F

  • Average August

    86.4 °F

  • Highest 1 August, 2026

    93.7 °F

Climate (2021–2026)

Rockport Aransas County Airport (28.6 miles)

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  • Average Low 2021–2026

    67.7 °F

  • Average 2021–2026

    74.8 °F

  • Average High 2021–2026

    82.1 °F
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