Williamsburg Weather Forecast

    • 65
    • 74

    Chance Rain Showers

    • 67
    • 82

    Partly Sunny

    • 63
    • 82

    Partly Sunny

    • 65
    • 82

    Mostly Sunny

    • 67
    • 83

    Slight Chance Rain Showers

    • 65
    • 83

    Chance Rain Showers

Today 19 Aug Dorchester

Cloudy with a chance of Showers. A slight chance of Thunderstorms in the afternoon. Highs in the mid 70s. East Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 50 percent.

Tonight 19 Aug Dorchester

Mostly cloudy with a 20 percent chance of Showers. Lows in the upper 60s. East Winds 5 to 10 Mph. Gusts up to 20 Mph in the evening.

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Williamsburg Temperature Statistics

August Temperature

Cambridge-Dorchester Airport (13.7 miles)

  • Lowest 4 August, 2025

    57.2 °F

  • Average August

    73.4 °F

  • Highest 15 August, 2025

    89.6 °F

Climate (2020–Present)

Cambridge-Dorchester Airport (13.7 miles)

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  • Average Low 2020–2025

    49.4 °F

  • Average 2020–2025

    58.3 °F

  • Average High 2020–2025

    66.9 °F
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