Williamstown Weather Forecast

    • 68
    • 85

    Thunderstorms

    • 62
    • 85

    Rain Showers

    • 51
    • 71

    Chance Rain Showers

    • 53
    • 68

    Mostly Cloudy

    • 61
    • 73

    Rain Showers Likely

    • 62
    • 77

    Rain Showers Likely

Today 18 May Rush

Mostly sunny with isolated Showers and Thunderstorms through early Afternoon, then mostly cloudy with numerous Showers and scattered Thunderstorms late this afternoon. Highs in the mid 80s. Southwest Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 70 percent.

Tonight 18 May Rush

Mostly cloudy with scattered Showers with isolated Thunderstorms through the late Overnight, then partly cloudy toward daybreak. Lows in the upper 60s. South Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Williamstown Temperature Statistics

May Temperature

Shelbyville Municipal Airport (19.9 miles)

  • Lowest 3 May, 2026

    35.7 °F

  • Average May

    55.6 °F

  • Highest 12 May, 2026

    77.6 °F

Climate (2021–Present)

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

    67.1 °F
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