Lockhart State Park Weather Forecast

    • 76
    • 101

    Hot

    • 77
    • 98

    Slight Chance Thunderstorms

    • 73
    • 99

    Hot

    • 74
    • 99

    Hot

    • 75
    • 100

    Hot

    • 75
    • 100

    Hot

    • 74
    • 100

    Hot

Today 13 Aug Caldwell

Sunny, hot with Highs around 101. South Winds 10 to 15 Mph with Gusts up to 25 Mph. Highest heat index Readings up to 108.

Tonight 13 Aug Caldwell

Mostly clear this Evening, then becoming mostly cloudy. Lows in the upper 70s. South Winds 15 to 20 Mph with Gusts up to 30 Mph, Diminishing to 5 to 10 Mph with Gusts up to 20 Mph after midnight.

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Lockhart State Park Temperature Statistics

August Temperature

San Marcos, San Marcos Municipal Airport (10.6 miles)

  • Lowest 3 August, 2026

    70 °F

  • Average August

    85.9 °F

  • Highest 2 August, 2026

    100 °F

Climate (2021–2026)

San Marcos, San Marcos Municipal Airport (10.6 miles)

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  • Average Low 2021–2026

    60.1 °F

  • Average 2021–2026

    70.9 °F

  • Average High 2021–2026

    82.5 °F
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