Williamstown Weather Forecast

    • 48
    • 60

    Rain

    • 45
    • 66

    Mostly Cloudy

    • 52
    • 73

    Partly Sunny

    • 58
    • 78

    Partly Sunny

    • 45
    • 75

    Slight Chance Rain Showers

    • 43
    • 67

    Partly Sunny

Today 28 Sep Northern Berkshire

Rain. Highs in the upper 50s. Northeast Winds 10 to 15 Mph. Gusts up to 30 Mph this morning. Chance of rain near 100 percent.

Tonight 28 Sep Northern Berkshire

Mostly cloudy. Rain likely in the evening. Lows in the upper 40s. North Winds around 5 Mph. Chance of rain 60 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Williamstown Temperature Statistics

September Temperature

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

  • Lowest 25 September, 2026

    35.7 °F

  • Average September

    61.4 °F

  • Highest 3 September, 2026

    80.7 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    39.6 °F

  • Average 2021–2026

    49.7 °F

  • Average High 2021–2026

    59.8 °F
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