Williamstown Weather Forecast

    • 60
    • 75

    Rain Showers

    • 42
    • 73

    Partly Sunny

    • 47
    • 68

    Rain Showers Likely

    • 46
    • 64

    Rain Showers Likely

    • 46
    • 68

    Chance Rain Showers

    • 45
    • 65

    Slight Chance Rain Showers

Today 17 Sep Northern Berkshire

Patchy fog in the morning. Partly sunny in the Morning, then cloudy with Showers likely in the afternoon. Humid with Highs in the mid 70s. South Winds around 5 Mph. Chance of rain 70 percent.

Tonight 17 Sep Northern Berkshire

Cloudy. Showers, mainly in the evening. Humid with Lows in the lower 60s. Southwest Winds around 5 Mph, becoming northwest after midnight. Chance of rain 80 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Williamstown Temperature Statistics

September Temperature

North Adams Harriman-and-West Airport (1.9 miles)

  • Lowest 7 September, 2026

    41.6 °F

  • Average September

    64.5 °F

  • Highest 3 September, 2026

    80.7 °F

Climate (2021–2026)

North Adams Harriman-and-West Airport (1.9 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    39.6 °F

  • Average 2021–2026

    49.8 °F

  • Average High 2021–2026

    59.8 °F
Get WillyWeather+ to remove ads