Leander Weather Forecast

    • 75
    • 96

    Increasing Clouds

    • 74
    • 95

    Slight Chance Thunderstorms

    • 75
    • 95

    Slight Chance Thunderstorms

    • 74
    • 95

    Partly Sunny

    • 71
    • 93

    Partly Sunny

    • 71
    • 92

    Partly Sunny

Today 20 Sep Williamson

Partly cloudy. Highs in the upper 90s. South Winds around 5 Mph.

Tonight 20 Sep Williamson

Partly cloudy. Lows in the mid 70s. South Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Leander Temperature Statistics

September Temperature

Lago Vista TX, Rusty Allen Airport (8.7 miles)

  • Lowest 17 September, 2026

    73.8 °F

  • Average September

    83.5 °F

  • Highest 11 September, 2026

    99.7 °F

Climate (2021–2026)

Lago Vista TX, Rusty Allen Airport (8.7 miles)

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  • Average Low 2021–2026

    60.3 °F

  • Average 2021–2026

    69.4 °F

  • Average High 2021–2026

    79.7 °F
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