Williamstown Weather Forecast

    • 63
    • 79

    Partly Sunny

    • 63
    • 80

    Mostly Sunny

    • 59
    • 79

    Chance Thunderstorms

    • 56
    • 77

    Partly Sunny

    • 58
    • 77

    Partly Sunny

    • 61
    • 79

    Partly Sunny

Today 20 Aug Rush

Patchy fog toward daybreak. Mostly cloudy with scattered Showers with isolated Thunderstorms toward Daybreak, then partly cloudy. Some Thunderstorms may produce heavy rainfall toward daybreak. Highs in the upper 70s. North Winds around 5 Mph. Chance of rain 50 percent.

Tonight 20 Aug Rush

Mostly clear through the late Overnight, then becoming partly cloudy. Patchy fog toward daybreak. Lows in the lower 60s. Northeast Winds around 5 Mph through the late Overnight, becoming light and variable.

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Williamstown Temperature Statistics

August Temperature

Shelbyville Municipal Airport (19.9 miles)

  • Lowest 4 August, 2026

    57.7 °F

  • Average August

    75 °F

  • Highest 10 August, 2026

    89.7 °F

Climate (2021–2026)

Shelbyville Municipal Airport (19.9 miles)

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  • Average Low 2021–2026

    46.9 °F

  • Average 2021–2026

    56.9 °F

  • Average High 2021–2026

    67 °F
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