Washington Weather Forecast

    • 74
    • 92

    Chance Thunderstorms

    • 75
    • 93

    Chance Thunderstorms

    • 75
    • 93

    Chance Thunderstorms

    • 75
    • 94

    Slight Chance Thunderstorms

    • 74
    • 94

    Slight Chance Thunderstorms

    • 74
    • 93

    Slight Chance Thunderstorms

Today 4 Sep Washington

Partly sunny with a chance of Showers. A chance of Thunderstorms in the afternoon. Humid with Highs in the lower 90s. Southeast Winds around 5 Mph. Chance of rain 40 percent.

Tonight 4 Sep Washington

Partly cloudy in the Evening, then clearing. Humid with Lows in the mid 70s. Southeast Winds around 5 Mph in the Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Washington Temperature Statistics

September Temperature

Brenham, Brenham Municipal Airport (14.3 miles)

  • Lowest 1 September, 2026

    75.2 °F

  • Average September

    84.9 °F

  • Highest 1 September, 2026

    97.2 °F

Climate (2021–2026)

Brenham, Brenham Municipal Airport (14.3 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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