Lake Sam Rayburn Weather Forecast

    • 77
    • 97

    Chance Thunderstorms

    • 77
    • 96

    Chance Thunderstorms

    • 77
    • 96

    Chance Thunderstorms

    • 75
    • 95

    Chance Thunderstorms

    • 74
    • 90

    Thunderstorms Likely

    • 74
    • 88

    Chance Thunderstorms

Today 17 Aug San Augustine

Mostly sunny with a slight chance of Showers and Thunderstorms. Highs in the upper 90s. Southwest Winds around 5 Mph. Chance of rain 20 percent. Heat index Values up to 113.

Tonight 17 Aug San Augustine

Mostly clear. Humid with Lows in the lower 70s. Light and variable Winds. Heat index Values up to 112 early in the evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Sam Rayburn Temperature Statistics

August Temperature

Jasper, Jasper County-Bell Field Airport (16.2 miles)

  • Lowest 5 August, 2025

    68 °F

  • Average August

    81.1 °F

  • Highest 6 August, 2025

    95 °F

Climate (2020–Present)

Jasper, Jasper County-Bell Field Airport (16.2 miles)

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  • Average Low 2020–2025

    57.4 °F

  • Average 2020–2025

    67.5 °F

  • Average High 2020–2025

    79 °F
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