Siena Weather Forecast

    • 72
    • 94

    Decreasing Clouds

    • 75
    • 92

    Partly Sunny

    • 76
    • 92

    Partly Sunny

    • 75
    • 94

    Partly Sunny

    • 75
    • 95

    Partly Sunny

    • 75
    • 95

    Mostly Sunny

Today 17 Jul Williamson

Partly cloudy in the Morning, then clearing. Highs in the mid 90s. South Winds 5 to 10 Mph.

Tonight 17 Jul Williamson

Partly cloudy. Lows in the lower 70s. South Winds around 5 Mph.

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Siena Temperature Statistics

July Temperature

Georgetown, Georgetown Municipal Airport (10.6 miles)

  • Lowest 1 July, 2025

    72 °F

  • Average July

    80.3 °F

  • Highest 1 July, 2025

    95 °F

Climate (2020–Present)

Georgetown, Georgetown Municipal Airport (10.6 miles)

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  • Average Low 2020–2025

    58.7 °F

  • Average 2020–2025

    69 °F

  • Average High 2020–2025

    79.8 °F
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