Williamstown Weather Forecast

    • 66
    • 92

    Chance Thunderstorms

    • 65
    • 83

    Mostly Sunny

    • 70
    • 88

    Partly Sunny

    • 73
    • 91

    Partly Sunny

    • 73
    • 95

    Mostly Sunny

    • 75
    • 96

    Mostly Sunny

Today 19 Jun Gloucester

Sunny. A chance of Showers and Thunderstorms in the afternoon. Some Thunderstorms may produce gusty Winds in the afternoon. Hot with Highs in the lower 90s. Southwest Winds 10 to 15 Mph. Chance of rain 50 percent.

Tonight 19 Jun Gloucester

Mostly cloudy with a chance of Showers and Thunderstorms in the Evening, then partly cloudy after midnight. Some Thunderstorms may produce gusty Winds in the evening. Humid with Lows in the mid 60s. West Winds 5 to 10 Mph. Gusts up to 25 Mph in the evening. Chance of rain 50 percent.

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Williamstown Temperature Statistics

June Temperature

Philadelphia, Philadelphia International Airport (17.4 miles)

  • Lowest 1 June, 2025

    52.6 °F

  • Average June

    71.4 °F

  • Highest 12 June, 2025

    91 °F

Climate (2020–Present)

Philadelphia, Philadelphia International Airport (17.4 miles)

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  • Average Low 2020–2025

    50.3 °F

  • Average 2020–2025

    58.4 °F

  • Average High 2020–2025

    66.9 °F
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