Williamstown Weather Forecast

    • 65
    • 92

    Decreasing Clouds

    • 65
    • 91

    Rain Showers Likely

    • 62
    • 84

    Rain Showers Likely

    • 60
    • 76

    Chance Thunderstorms

    • 58
    • 77

    Chance Rain Showers

    • 58
    • 78

    Partly Sunny

Today 15 Sep Jefferson

Sunny. A slight chance of Showers in the morning. Humid with Highs in the lower 90s. South Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 15 Sep Jefferson

Mostly cloudy with a slight chance of Showers and Thunderstorms. Near steady temperature in the upper 60s. Southeast Winds around 5 Mph. Chance of rain 20 percent.

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Williamstown Temperature Statistics

September Temperature

Lawrence, Lawrence Municipal Airport (7.5 miles)

  • Lowest 6 September, 2025

    43 °F

  • Average September

    66.8 °F

  • Highest 12 September, 2025

    96.1 °F

Climate (2020–Present)

Lawrence, Lawrence Municipal Airport (7.5 miles)

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  • Average Low 2020–2025

    44.1 °F

  • Average 2020–2025

    56.5 °F

  • Average High 2020–2025

    69 °F
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