Stone Mountain Weather Forecast

    • 68
    • 88

    Chance Thunderstorms

    • 67
    • 86

    Rain Showers Likely

    • 66
    • 85

    Rain Showers

    • 67
    • 84

    Rain Showers Likely

    • 66
    • 85

    Rain Showers

    • 67
    • 84

    Rain Showers Likely

Today 20 May DeKalb

Mostly sunny. A chance of Showers and Thunderstorms. Highs in the upper 80s. Temperature falling into the mid 80s. Light southwest Winds. Chance of rain 50 percent.

Tonight 20 May DeKalb

Partly cloudy with a chance of Showers and Thunderstorms in the Evening, then mostly cloudy with a slight chance of Showers after midnight. Lows in the upper 60s. Light southwest Winds in the Evening, becoming light and variable. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Stone Mountain Temperature Statistics

May Temperature

Atlanta, De Kalb-Peachtree Airport (8.7 miles)

  • Lowest 3 May, 2026

    43.6 °F

  • Average May

    65.8 °F

  • Highest 17 May, 2026

    89.7 °F

Climate (2021–Present)

Atlanta, De Kalb-Peachtree Airport (8.7 miles)

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  • Average Low 2021–2026

    53.2 °F

  • Average 2021–2026

    63.2 °F

  • Average High 2021–2026

    73.9 °F
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