Plymouth Weather Forecast

    • 53
    • 68

    Chance Rain Showers

    • 50
    • 66

    Slight Chance Rain Showers

    • 50
    • 65

    Rain Showers Likely

    • 48
    • 64

    Chance Rain Showers

    • 47
    • 65

    Partly Sunny

    • 48
    • 65

    Partly Sunny

    • 50
    • 68

    Mostly Sunny

Today 20 Sep Ashtabula Inland

Partly cloudy. Highs in the lower 70s.

Tonight 20 Sep Ashtabula Inland

Mostly cloudy. A slight chance of Showers after midnight. Lows in the lower 50s. Northeast Winds 5 to 10 Mph. Chance of rain 20 percent.

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Plymouth Temperature Statistics

September Temperature

Ashtabula - Northeast Ohio Regional Airport (3.7 miles)

  • Lowest 7 September, 2026

    48 °F

  • Average September

    69 °F

  • Highest 2 September, 2026

    91.9 °F

Climate (2021–2026)

Ashtabula - Northeast Ohio Regional Airport (3.7 miles)

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  • Average Low 2021–2026

    42.6 °F

  • Average 2021–2026

    51.6 °F

  • Average High 2021–2026

    60.6 °F
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