Plymouth Weather Forecast

    • 54
    • 78

    Decreasing Clouds

    • 47
    • 74

    Rain Showers Likely

    • 46
    • 73

    Mostly Sunny

    • 50
    • 77

    Partly Sunny

    • 48
    • 75

    Partly Sunny

    • 56
    • 74

    Chance Rain Showers

    • 48
    • 76

    Chance Rain Showers

Today 4 Sep Southern Grafton

Partly sunny with a 20 percent chance of Showers. Highs in the mid 70s. Northwest Winds around 10 Mph with Gusts up to 20 Mph.

Tonight 4 Sep Southern Grafton

Partly cloudy. Patchy fog after midnight. Lows in the mid 50s. Northwest Winds around 10 Mph in the Evening, becoming light and variable.

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Plymouth Temperature Statistics

September Temperature

Plymouth Municipal Airport (3.1 miles)

  • Lowest 1 September, 2026

    49.1 °F

  • Average September

    63 °F

  • Highest 1 September, 2026

    75.4 °F

Climate (2021–2026)

Plymouth Municipal Airport (3.1 miles)

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  • Average Low 2021–2026

    36.2 °F

  • Average 2021–2026

    46.4 °F

  • Average High 2021–2026

    57 °F
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