Marietta Weather Forecast

    • 66
    • 84

    Chance Rain Showers

    • 60
    • 83

    Rain Showers Likely

    • 57
    • 72

    Rain Showers Likely

    • 56
    • 70

    Rain Showers Likely

    • 55
    • 69

    Rain Showers Likely

    • 53
    • 70

    Chance Rain Showers

Today 19 Sep Washington

Patchy dense fog this morning. Mostly sunny. Highs in the lower 80s. Northeast Winds around 5 Mph this Morning, becoming light and variable.

Tonight 19 Sep Washington

Partly cloudy in the Evening, then becoming mostly cloudy. A slight chance of Thunderstorms. A slight chance of Showers in the Evening, then a chance of Showers after midnight. Lows in the mid 60s. Light and variable Winds, becoming south around 5 Mph after midnight. Chance of rain 50 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Marietta Temperature Statistics

September Temperature

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

  • Lowest 15 September, 2026

    51.1 °F

  • Average September

    75.8 °F

  • Highest 3 September, 2026

    94.6 °F

Climate (2021–2026)

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

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    45.3 °F

  • Average 2021–2026

    55.8 °F

  • Average High 2021–2026

    66.5 °F
Get WillyWeather+ to remove ads