Lake Georgetown Weather Forecast

    • 73
    • 98

    Slight Chance Thunderstorms

    • 73
    • 96

    Slight Chance Thunderstorms

    • 74
    • 97

    Partly Sunny

    • 71
    • 96

    Partly Sunny

    • 70
    • 94

    Partly Sunny

    • 71
    • 95

    Partly Sunny

Today 21 Sep Williamson

Mostly sunny this Morning, then partly cloudy with a chance of Showers and Thunderstorms this afternoon. Highs in the upper 90s. Southwest Winds around 5 Mph, becoming east this afternoon. Chance of rain 30 percent.

Tonight 21 Sep Williamson

Partly cloudy. A slight chance of Showers and Thunderstorms in the evening. Lows in the lower 70s. East Winds around 5 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Georgetown Temperature Statistics

September Temperature

Georgetown, Georgetown Municipal Airport (3.1 miles)

  • Lowest 18 September, 2026

    75 °F

  • Average September

    87.2 °F

  • Highest 2 September, 2026

    102 °F

Climate (2021–2026)

Georgetown, Georgetown Municipal Airport (3.1 miles)

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  • Average Low 2021–2026

    59.7 °F

  • Average 2021–2026

    70.1 °F

  • Average High 2021–2026

    81 °F
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