Castac Lake Weather Forecast

    • 59
    • 84

    Sunny

    • 62
    • 86

    Mostly Sunny

    • 63
    • 86

    Partly Sunny

    • 63
    • 85

    Partly Sunny

    • 64
    • 86

    Mostly Sunny

    • 64
    • 88

    Mostly Sunny

Today 15 Aug Grapevine

Sunny. Highs 78 to 88. Southeast Winds up to 5 Mph shifting to the northeast in the afternoon. Gusts up to 25 Mph.

Tonight 15 Aug Grapevine

Clear. Lows 59 to 65. West Winds up to 5 Mph shifting to the northwest after midnight.

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  • Temperature Real-Time

Castac Lake Temperature Statistics

August Temperature

Sandberg (8.7 miles)

  • Lowest 12 August, 2026

    61 °F

  • Average August

    79.9 °F

  • Highest 1 August, 2026

    95.6 °F

Climate (2021–2026)

Sandberg (8.7 miles)

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  • Average Low 2021–2026

    51.2 °F

  • Average 2021–2026

    59.2 °F

  • Average High 2021–2026

    67.9 °F
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