Plymouth Weather Forecast

    • 68
    • 88

    Increasing Clouds

    • 71
    • 90

    Mostly Sunny

    • 67
    • 88

    Rain Showers Likely

    • 64
    • 77

    Rain Showers Likely

    • 59
    • 73

    Slight Chance Rain Showers

    • 58
    • 73

    Partly Sunny

Today 17 Sep Carroll

Mostly sunny. Highs in the lower 90s. Southwest Winds around 5 Mph, becoming west around 5 Mph this afternoon.

Tonight 17 Sep Carroll

Mostly clear. Lows around 70. East Winds around 5 Mph.

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Plymouth Temperature Statistics

September Temperature

Chillicothe, Chillicothe Agri-Science Center (16.2 miles)

  • Lowest 14 September, 2026

    59 °F

  • Average September

    79.9 °F

  • Highest 5 September, 2026

    100.7 °F

Climate (2021–2026)

Chillicothe, Chillicothe Agri-Science Center (16.2 miles)

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  • Average Low 2021–2026

    45.6 °F

  • Average 2021–2026

    56.3 °F

  • Average High 2021–2026

    67.2 °F
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