Round Mountain Weather Forecast

    • 48
    • 68

    Sunny

    • 50
    • 79

    Mostly Sunny

    • 53
    • 75

    Partly Sunny

    • 61
    • 78

    Mostly Cloudy

    • 60
    • 79

    Partly Sunny

    • 58
    • 80

    Partly Sunny

Today 19 Dec Travis

Sunny, cooler with Highs in the mid 60s. East Winds around 5 Mph, becoming south with Gusts up to 20 Mph in the afternoon.

Tonight 19 Dec Travis

Clear. Much cooler with Lows around 40. North Winds around 5 Mph.

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Round Mountain Temperature Statistics

December Temperature

Lago Vista TX, Rusty Allen Airport (8.7 miles)

  • Lowest 15 December, 2025

    31.1 °F

  • Average December

    50.4 °F

  • Highest 13 December, 2025

    76.8 °F

Climate (2020–Present)

Lago Vista TX, Rusty Allen Airport (8.7 miles)

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  • Average Low 2020–2025

    59.5 °F

  • Average 2020–2025

    68.8 °F

  • Average High 2020–2025

    79.6 °F
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