Williamstown Weather Forecast

    • 46
    • 66

    Rain Showers Likely

    • 44
    • 65

    Rain Showers

    • 46
    • 70

    Partly Sunny

    • 49
    • 73

    Mostly Sunny

    • 55
    • 80

    Mostly Sunny

    • 58
    • 84

    Mostly Cloudy

Today 31 May Northern Berkshire

Partly sunny this Morning, then mostly cloudy with scattered Showers with isolated Thunderstorms this afternoon. Warmer with Highs in the mid 60s. Northwest Winds around 5 Mph, increasing to around 10 Mph this afternoon. Chance of rain 50 percent.

Tonight 31 May Northern Berkshire

Mostly cloudy with scattered Showers. Not as cool with Lows in the mid 40s. West Winds 5 to 10 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Williamstown Temperature Statistics

May Temperature

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

  • Lowest 8 May, 2026

    31.6 °F

  • Average May

    55.8 °F

  • Highest 18 May, 2026

    90.6 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    39.9 °F

  • Average 2021–2026

    49.8 °F

  • Average High 2021–2026

    59.7 °F
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