Sweeny Weather Forecast

    • 75
    • 93

    Partly Sunny

    • 74
    • 91

    Chance Thunderstorms

    • 72
    • 90

    Rain Showers Likely

    • 70
    • 89

    Chance Thunderstorms

    • 69
    • 90

    Slight Chance Thunderstorms

    • 71
    • 92

    Chance Rain Showers

Today 5 Sep Inland Brazoria

Mostly sunny. Highs in the lower 90s. South Winds 5 to 10 Mph.

Tonight 5 Sep Inland Brazoria

Partly cloudy. Lows in the mid 70s. Southeast Winds 5 to 10 Mph.

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Sweeny Temperature Statistics

September Temperature

Bay City, Bay City Municipal Airport (10.6 miles)

  • Lowest 3 September, 2025

    73 °F

  • Average September

    80.6 °F

  • Highest 3 September, 2025

    93.7 °F

Climate (2020–Present)

Bay City, Bay City Municipal Airport (10.6 miles)

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  • Average Low 2020–2025

    61.5 °F

  • Average 2020–2025

    70 °F

  • Average High 2020–2025

    79.7 °F
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