Stone Mountain Weather Forecast

    • 71
    • 92

    Mostly Sunny

    • 73
    • 96

    Slight Chance Thunderstorms

    • 70
    • 94

    Chance Thunderstorms

    • 71
    • 91

    Slight Chance Thunderstorms

    • 70
    • 91

    Chance Thunderstorms

    • 68
    • 89

    Chance Rain Showers

    • 65
    • 83

    Chance Rain Showers

Today 17 Sep DeKalb

Mostly sunny. Highs in the upper 70s.

Tonight 17 Sep DeKalb

Mostly clear. Lows around 70. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Stone Mountain Temperature Statistics

September Temperature

Atlanta, De Kalb-Peachtree Airport (8.7 miles)

  • Lowest 9 September, 2026

    66.7 °F

  • Average September

    82.2 °F

  • Highest 5 September, 2026

    100.7 °F

Climate (2021–2026)

Atlanta, De Kalb-Peachtree Airport (8.7 miles)

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  • Average Low 2021–2026

    53.3 °F

  • Average 2021–2026

    63.5 °F

  • Average High 2021–2026

    74.1 °F
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