Williamstown Weather Forecast

    • 64
    • 82

    Slight Chance Thunderstorms

    • 61
    • 81

    Slight Chance Thunderstorms

    • 58
    • 80

    Mostly Sunny

    • 62
    • 82

    Partly Sunny

    • 68
    • 87

    Partly Sunny

    • 70
    • 88

    Partly Sunny

Today 26 Aug Rush

Partly Cloudy, then becoming mostly sunny through early Afternoon, then becoming partly cloudy. A slight chance of Showers and Thunderstorms late this afternoon. Highs in the lower 80s. Light and variable Winds, becoming southeast around 5 Mph toward Daybreak, then becoming southwest. Chance of rain 20 percent.

Tonight 26 Aug Rush

Partly cloudy. Showers likely with a chance of Thunderstorms through the late overnight. Lows in the mid 60s. Southwest Winds around 5 Mph. Chance of rain 70 percent.

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Williamstown Temperature Statistics

August Temperature

Shelbyville Municipal Airport (19.9 miles)

  • Lowest 4 August, 2026

    57.7 °F

  • Average August

    74.3 °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

    46.8 °F

  • Average 2021–2026

    56.8 °F

  • Average High 2021–2026

    67 °F
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