Marietta Weather Forecast

    • 71
    • 86

    Increasing Clouds

    • 70
    • 90

    Rain Showers Likely

    • 63
    • 83

    Chance Thunderstorms

    • 62
    • 82

    Mostly Sunny

    • 67
    • 85

    Chance Rain Showers

    • 63
    • 81

    Chance Rain Showers

Today 15 Aug Washington

Partly sunny. Areas of fog in the morning. A slight chance of Showers in the afternoon. Humid with Highs in the mid 80s. Light and variable Winds, becoming east around 5 Mph in the afternoon. Chance of rain 20 percent.

Tonight 15 Aug Washington

Partly cloudy in the Evening, then becoming mostly cloudy. A chance of Thunderstorms. A chance of Showers. Humid with Lows in the lower 70s. Light and variable Winds, becoming south around 5 Mph after midnight. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Marietta Temperature Statistics

August Temperature

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

  • Lowest 4 August, 2026

    59.6 °F

  • Average August

    74.9 °F

  • Highest 5 August, 2026

    88.6 °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

    66.4 °F
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