Williamstown Weather Forecast

    • 62
    • 78

    Chance Thunderstorms

    • 60
    • 80

    Chance Thunderstorms

    • 59
    • 81

    Partly Sunny

    • 61
    • 84

    Partly Sunny

    • 64
    • 87

    Slight Chance Thunderstorms

    • 64
    • 83

    Rain Showers Likely

    • 63
    • 84

    Chance Rain Showers

Today 28 Jul Dauphin

Showers and Thunderstorms likely. Some Thunderstorms may produce heavy rainfall. Locally heavy rainfall possible. Highs in the upper 70s. South Winds around 5 Mph. Chance of rain 70 percent.

Tonight 28 Jul Dauphin

Mostly cloudy with Showers and Thunderstorms likely this Evening, then partly cloudy after midnight. Some Thunderstorms may produce heavy rainfall this evening. Lows in the mid 60s. Northeast Winds around 5 Mph, becoming northwest with Gusts up to 20 Mph after midnight. Chance of rain 70 percent.

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Williamstown Temperature Statistics

July Temperature

Muir Army Air Field / Indiantown (9.9 miles)

  • Lowest 24 July, 2026

    50 °F

  • Average July

    77.4 °F

  • Highest 2 July, 2026

    103.3 °F

Climate (2021–2026)

Muir Army Air Field / Indiantown (9.9 miles)

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  • Average Low 2021–2026

    45.3 °F

  • Average 2021–2026

    54.7 °F

  • Average High 2021–2026

    64 °F
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