Snellville Weather Forecast

    • 69
    • 89

    Rain Showers Likely

    • 63
    • 81

    Chance Rain Showers

    • 59
    • 76

    Mostly Cloudy

    • 59
    • 79

    Mostly Sunny

    • 57
    • 82

    Partly Sunny

    • 58
    • 82

    Partly Sunny

Today 22 Sep Gwinnett

Partly sunny. A chance of Showers and Thunderstorms in the afternoon. Highs in the upper 80s. Temperature falling into the lower 80s in the afternoon. Light northeast Winds. Chance of rain 50 percent.

Tonight 22 Sep Gwinnett

Partly cloudy. A chance of Showers with a slight chance of Thunderstorms in the evening. Lows in the upper 60s. Light east Winds. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Snellville Temperature Statistics

September Temperature

Gwinnett County Airport-Briscoe Field (9.3 miles)

  • Lowest 9 September, 2026

    66.2 °F

  • Average September

    79.4 °F

  • Highest 5 September, 2026

    98.1 °F

Climate (2021–2026)

Gwinnett County Airport-Briscoe Field (9.3 miles)

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  • Average Low 2021–2026

    53.4 °F

  • Average 2021–2026

    62.4 °F

  • Average High 2021–2026

    72.4 °F
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