Williamstown Weather Forecast

    • 56
    • 79

    Increasing Clouds

    • 65
    • 86

    Partly Sunny

    • 64
    • 87

    Rain Showers Likely

    • 55
    • 72

    Rain Showers Likely

    • 55
    • 69

    Chance Rain Showers

    • 50
    • 68

    Slight Chance Rain Showers

Today 29 Sep Rush

Sunny. Highs in the upper 70s. Southeast Winds around 5 Mph.

Tonight 29 Sep Rush

Mostly clear through the late Overnight, then becoming partly cloudy. Lows in the mid 50s. Southeast Winds around 5 Mph.

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Williamstown Temperature Statistics

September Temperature

Shelbyville Municipal Airport (19.9 miles)

  • Lowest 25 September, 2026

    46.7 °F

  • Average September

    73.7 °F

  • Highest 4 September, 2026

    96.7 °F

Climate (2021–2026)

Shelbyville Municipal Airport (19.9 miles)

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  • Average Low 2021–2026

    46.8 °F

  • Average 2021–2026

    56.9 °F

  • Average High 2021–2026

    67 °F
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