Plymouth Weather Forecast

    • 54
    • 79

    Mostly Sunny

    • 57
    • 78

    Mostly Sunny

    • 50
    • 73

    Mostly Sunny

    • 58
    • 76

    Partly Sunny

    • 62
    • 83

    Chance Rain Showers

Today 17 Sep Ashtabula Inland

Patchy fog in the morning. Mostly sunny. Highs around 80. South Winds around 5 Mph, becoming northwest around 5 Mph in the afternoon.

Tonight 17 Sep Ashtabula Inland

Mostly clear. Areas of fog after midnight. Lows in the lower 50s. Northeast Winds around 5 Mph in the Evening, becoming light and variable.

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Plymouth Temperature Statistics

September Temperature

Ashtabula - Northeast Ohio Regional Airport (3.7 miles)

  • Lowest 9 September, 2025

    41 °F

  • Average September

    60.2 °F

  • Highest 3 September, 2025

    81 °F

Climate (2020–Present)

Ashtabula - Northeast Ohio Regional Airport (3.7 miles)

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  • Average Low 2020–2025

    43 °F

  • Average 2020–2025

    51.8 °F

  • Average High 2020–2025

    60.6 °F
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