Mewis Lake Weather Forecast

    • 75
    • 98

    Slight Chance Thunderstorms

    • 76
    • 98

    Hot

    • 72
    • 97

    Hot

    • 70
    • 96

    Partly Sunny

    • 73
    • 95

    Partly Sunny

    • 73
    • 95

    Partly Sunny

    • 74
    • 95

    Partly Sunny

Today 22 Sep Austin

Sunny with a slight chance of Showers and Thunderstorms. Hot with Highs in the upper 90s. Northeast Winds around 5 Mph. Chance of rain 20 percent.

Tonight 22 Sep Austin

Partly cloudy with a slight chance of Showers and Thunderstorms in the Evening, then mostly clear after midnight. Lows in the mid 70s. Southeast Winds around 5 Mph in the Evening, becoming light and variable. Chance of rain 20 percent.

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Mewis Lake Temperature Statistics

September Temperature

Brenham, Brenham Municipal Airport (16.2 miles)

  • Lowest 19 September, 2026

    68.2 °F

  • Average September

    83.7 °F

  • Highest 2 September, 2026

    100 °F

Climate (2021–2026)

Brenham, Brenham Municipal Airport (16.2 miles)

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  • Average Low 2021–2026

    61 °F

  • Average 2021–2026

    70.8 °F

  • Average High 2021–2026

    81.7 °F
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