Marietta Weather Forecast

    • 54
    • 80

    Mostly Sunny

    • 52
    • 78

    Mostly Sunny

    • 54
    • 83

    Sunny

    • 60
    • 87

    Mostly Sunny

    • 67
    • 88

    Mostly Sunny

    • 69
    • 87

    Partly Sunny

Today 26 Sep Cobb

Sunny. Highs in the lower 80s. Light east Winds, becoming northwest.

Tonight 26 Sep Cobb

Mostly clear. Lows in the mid 50s. North Winds 5 to 10 Mph.

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Marietta Temperature Statistics

September Temperature

Marietta / Dobbins Air Force Base (3.1 miles)

  • Lowest 24 September, 2026

    63.1 °F

  • Average September

    80.1 °F

  • Highest 5 September, 2026

    98.1 °F

Climate (2021–2026)

Marietta / Dobbins Air Force Base (3.1 miles)

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  • Average Low 2021–2026

    54.2 °F

  • Average 2021–2026

    63.3 °F

  • Average High 2021–2026

    73.2 °F
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