Stone Mountain Weather Forecast

    • 58
    • 75

    Partly Sunny

    • 54
    • 70

    Rain Showers Likely

    • 25
    • 62

    Rain Showers Likely

    • 27
    • 41

    Mostly Sunny

    • 32
    • 48

    Mostly Sunny

    • 26
    • 51

    Partly Sunny

Today 27 Dec DeKalb

Mostly sunny. Highs in the mid 70s. Light west Winds.

Tonight 27 Dec DeKalb

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the upper 50s. Light southwest Winds, becoming south after midnight.

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  • Temperature Real-Time

Stone Mountain Temperature Statistics

December Temperature

Atlanta, De Kalb-Peachtree Airport (8.7 miles)

  • Lowest 15 December, 2025

    18 °F

  • Average December

    45.2 °F

  • Highest 24 December, 2025

    75.9 °F

Climate (2020–Present)

Atlanta, De Kalb-Peachtree Airport (8.7 miles)

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  • Average Low 2020–2025

    52.9 °F

  • Average 2020–2025

    62.8 °F

  • Average High 2020–2025

    73.3 °F
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