Lady Bird Johnson Park Reservoir Weather Forecast

    • 72
    • 93

    Slight Chance Thunderstorms

    • 72
    • 95

    Mostly Sunny

    • 71
    • 95

    Mostly Sunny

    • 71
    • 95

    Mostly Sunny

    • 71
    • 97

    Hot

    • 71
    • 97

    Hot

Today 7 Sep Gillespie

Partly cloudy with a slight chance of Showers and Thunderstorms. Near steady temperature in the lower 90s. Southeast Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 7 Sep Gillespie

Mostly clear. Lows in the lower 70s. South Winds 5 to 10 Mph.

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Lady Bird Johnson Park Reservoir Temperature Statistics

September Temperature

Fredericksburg, Gillespie County Airport (0 miles)

  • Lowest 1 September, 2026

    69.8 °F

  • Average September

    84.3 °F

  • Highest 2 September, 2026

    100.4 °F

Climate (2021–2026)

Fredericksburg, Gillespie County Airport (0 miles)

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  • Average Low 2021–2026

    56 °F

  • Average 2021–2026

    67.5 °F

  • Average High 2021–2026

    79.5 °F
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