Dunn Lake Weather Forecast

    • 76
    • 93

    Chance Thunderstorms

    • 76
    • 95

    Mostly Sunny

    • 76
    • 95

    Hot

    • 75
    • 94

    Slight Chance Thunderstorms

    • 75
    • 95

    Mostly Sunny

    • 75
    • 97

    Hot

Today 6 Sep Austin

Showers and Thunderstorms likely. Near steady temperature in the lower 90s. Southeast Winds around 5 Mph. Chance of rain 70 percent. Heat index Values up to 106.

Tonight 6 Sep Austin

Partly cloudy with a chance of Showers and Thunderstorms in the Evening, then mostly clear after midnight. Humid with Lows in the mid 70s. Southeast Winds around 5 Mph in the Evening, becoming light and variable. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

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Dunn Lake Temperature Statistics

September Temperature

Brenham, Brenham Municipal Airport (13.7 miles)

  • Lowest 1 September, 2026

    75.2 °F

  • Average September

    83.5 °F

  • Highest 2 September, 2026

    100 °F

Climate (2021–2026)

Brenham, Brenham Municipal Airport (13.7 miles)

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  • Average Low 2021–2026

    60.9 °F

  • Average 2021–2026

    70.7 °F

  • Average High 2021–2026

    81.7 °F
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