Marietta Weather Forecast

    • 50
    • 71

    Mostly Sunny

    • 54
    • 71

    Partly Sunny

    • 55
    • 69

    Mostly Cloudy

    • 54
    • 74

    Partly Sunny

    • 60
    • 75

    Mostly Cloudy

    • 62
    • 77

    Chance Rain Showers

Today 26 Sep Washington

Patchy dense fog this morning. Sunny. Visibility one quarter mile or less at Times this morning. Highs around 70. North Winds 5 to 10 Mph.

Tonight 26 Sep Washington

Mostly clear. Lows around 50. North Winds around 5 Mph.

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Marietta Temperature Statistics

September Temperature

Parkersburg, Mid-Ohio Valley Regional Airport (4.3 miles)

  • Lowest 24 September, 2026

    48.9 °F

  • Average September

    73.5 °F

  • Highest 3 September, 2026

    94.6 °F

Climate (2021–2026)

Parkersburg, Mid-Ohio Valley Regional Airport (4.3 miles)

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  • Average Low 2021–2026

    45.3 °F

  • Average 2021–2026

    55.8 °F

  • Average High 2021–2026

    66.5 °F
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