Williamstown Weather Forecast

    • 63
    • 80

    Rain Showers

    • 57
    • 83

    Chance Rain Showers

    • 48
    • 73

    Mostly Sunny

    • 54
    • 74

    Partly Sunny

    • 58
    • 80

    Partly Sunny

    • 56
    • 81

    Chance Rain Showers

Today 12 Sep Dauphin

Mostly cloudy. A slight chance of Showers in the afternoon. Highs in the upper 70s. Southeast Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 12 Sep Dauphin

Mostly cloudy. Lows in the upper 50s. East Winds around 5 Mph.

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  • Temperature Real-Time

Williamstown Temperature Statistics

September Temperature

Muir Army Air Field / Indiantown (9.9 miles)

  • Lowest 8 September, 2026

    55.4 °F

  • Average September

    73.8 °F

  • Highest 1 September, 2026

    92.1 °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

    54.8 °F

  • Average High 2021–2026

    64.1 °F
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