Stone Mountain Lake Weather Forecast

    • 72
    • 92

    Increasing Clouds

    • 72
    • 86

    Rain Showers

    • 71
    • 86

    Rain Showers

    • 71
    • 87

    Chance Thunderstorms

    • 72
    • 88

    Chance Thunderstorms

    • 73
    • 89

    Chance Thunderstorms

Today 31 Jul DeKalb

Mostly sunny. Highs in the lower 90s. Light east Winds, becoming west this afternoon.

Tonight 31 Jul DeKalb

Partly cloudy. Lows in the lower 70s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Stone Mountain Lake Temperature Statistics

July Temperature

Atlanta, De Kalb-Peachtree Airport (10.6 miles)

  • Lowest 4 July, 2026

    69.7 °F

  • Average July

    82 °F

  • Highest 2 July, 2026

    98.7 °F

Climate (2021–2026)

Atlanta, De Kalb-Peachtree Airport (10.6 miles)

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  • Average Low 2021–2026

    53.3 °F

  • Average 2021–2026

    63.4 °F

  • Average High 2021–2026

    74 °F
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