Marietta Weather Forecast

    • 65
    • 86

    Mostly Sunny

    • 63
    • 88

    Mostly Sunny

    • 66
    • 90

    Mostly Sunny

    • 65
    • 89

    Partly Sunny

    • 65
    • 85

    Partly Sunny

    • 66
    • 85

    Partly Sunny

Today 17 Sep Cobb

Mostly sunny with a slight chance of Showers. A slight chance of Thunderstorms this afternoon. Highs in the mid 80s. Light south Winds, becoming northwest around 5 Mph this afternoon. Chance of rain 20 percent.

Tonight 17 Sep Cobb

Mostly clear. Lows in the mid 60s. Light northwest Winds in the Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Marietta Temperature Statistics

September Temperature

Marietta / Dobbins Air Force Base (3.1 miles)

  • Lowest 10 September, 2025

    59 °F

  • Average September

    73.7 °F

  • Highest 5 September, 2025

    90.3 °F

Climate (2020–Present)

Marietta / Dobbins Air Force Base (3.1 miles)

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  • Average Low 2020–2025

    53.7 °F

  • Average 2020–2025

    62.7 °F

  • Average High 2020–2025

    72.6 °F
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