Washington Weather Forecast

    • 77
    • 101

    Slight Chance Thunderstorms

    • 76
    • 97

    Hot

    • 76
    • 96

    Partly Sunny

    • 75
    • 96

    Partly Sunny

    • 76
    • 95

    Partly Sunny

    • 73
    • 94

    Slight Chance Thunderstorms

    • 73
    • 94

    Mostly Sunny

Today 12 Sep Washington

Sunny, hot. Near steady temperature in the mid 90s. South Winds 5 to 10 Mph. Heat index Values up to 108.

Tonight 12 Sep Washington

Partly cloudy. Lows in the mid 70s. South Winds 5 to 10 Mph. Heat index Values up to 107 early this evening.

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Washington Temperature Statistics

September Temperature

Brenham, Brenham Municipal Airport (14.3 miles)

  • Lowest 5 September, 2026

    74.3 °F
  • Average September

    83.3 °F
  • Highest 2 September, 2026

    100 °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

    70.8 °F
  • Average High 2021–2026

    81.7 °F
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