Marietta Weather Forecast

    • 60
    • 69

    Rain Showers

    • 33
    • 65

    Chance Rain Showers

    • 37
    • 56

    Sunny

    • 32
    • 62

    Mostly Sunny

    • 28
    • 49

    Mostly Sunny

    • 42
    • 59

    Partly Sunny

    • 44
    • 66

    Partly Sunny

Today 18 Dec Robeson

Cloudy with a 50 percent chance of Showers. Near steady temperature in the mid 60s. Southeast Winds around 10 Mph with Gusts up to 20 Mph.

Tonight 18 Dec Robeson

A chance of Thunderstorms. Showers. Near steady temperature in the lower 60s. Southeast Winds around 10 Mph with Gusts up to 20 Mph, becoming south 15 to 20 Mph with Gusts up to 30 Mph after midnight. Chance of rain near 100 percent.

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Marietta Temperature Statistics

December Temperature

Marion County Airport (17.4 miles)

  • Lowest 15 December, 2025

    19.4 °F

  • Average December

    40.6 °F

  • Highest 13 December, 2025

    64.4 °F

Climate (2020–Present)

Marion County Airport (17.4 miles)

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  • Average Low 2020–2025

    53.1 °F

  • Average 2020–2025

    62.7 °F

  • Average High 2020–2025

    73.6 °F
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