Williamstown Weather Forecast

    • 59
    • 83

    Chance Thunderstorms

    • 59
    • 79

    Mostly Sunny

    • 62
    • 81

    Partly Sunny

    • 67
    • 83

    Rain Showers

    • 60
    • 79

    Rain Showers Likely

    • 59
    • 79

    Partly Sunny

Today 18 Jun Grant

Mostly Cloudy, then becoming partly cloudy this late morning and early Afternoon, then becoming mostly cloudy. A chance of Showers and Thunderstorms. Some Thunderstorms may produce heavy rainfall this morning. Highs in the lower 80s. West Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 50 percent.

Tonight 18 Jun Grant

Partly cloudy. A chance of Showers and Thunderstorms in the evening. Lows in the upper 50s. Northwest Winds 5 to 10 Mph. Chance of rain 40 percent.

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Williamstown Temperature Statistics

June Temperature

Cincinnati/Northern Kentucky International Airport (28.6 miles)

  • Lowest 15 June, 2026

    53.1 °F

  • Average June

    72.8 °F

  • Highest 7 June, 2026

    88.6 °F

Climate (2021–2026)

Cincinnati/Northern Kentucky International Airport (28.6 miles)

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  • Average Low 2021–2026

    47.5 °F

  • Average 2021–2026

    56.6 °F

  • Average High 2021–2026

    66.1 °F
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