Marietta Weather Forecast

    • 70
    • 90

    Partly Cloudy

    • 70
    • 92

    Chance Rain Showers

    • 68
    • 89

    Rain Showers Likely

    • 65
    • 81

    Chance Rain Showers

    • 61
    • 80

    Slight Chance Thunderstorms

    • 59
    • 79

    Mostly Sunny

Today 20 Sep Robeson

Patchy fog in the morning. Sunny. Highs in the lower 90s. Northeast Winds around 5 Mph.

Tonight 20 Sep Robeson

Partly cloudy in the Evening, then becoming mostly clear. Lows around 70. Southeast Winds around 5 Mph in the Evening, becoming light and variable.

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Marietta Temperature Statistics

September Temperature

Marion County Airport (17.4 miles)

  • Lowest 16 September, 2026

    60.8 °F

  • Average September

    78.3 °F

  • Highest 5 September, 2026

    96.8 °F

Climate (2021–2026)

Marion County Airport (17.4 miles)

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  • Average Low 2021–2026

    53.2 °F

  • Average 2021–2026

    63 °F

  • Average High 2021–2026

    74 °F
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