Snellville Weather Forecast

    • 40
    • 58

    Rain Showers

    • 31
    • 52

    Sunny

    • 39
    • 58

    Mostly Sunny

    • 35
    • 62

    Mostly Sunny

    • 35
    • 53

    Partly Sunny

    • 44
    • 56

    Partly Sunny

Today 18 Dec Gwinnett

Showers. Highs around 60. Southeast Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 90 percent.

Tonight 18 Dec Gwinnett

Cloudy with Showers likely with a slight chance of Thunderstorms in the Evening, then partly cloudy with a chance of Showers after midnight. Lows around 40. South Winds 10 to 15 Mph, becoming west after midnight. Gusts up to 30 Mph. Chance of rain 70 percent.

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Snellville Temperature Statistics

December Temperature

Gwinnett County Airport-Briscoe Field (9.3 miles)

  • Lowest 15 December, 2025

    26.1 °F

  • Average December

    41.5 °F

  • Highest 13 December, 2025

    68 °F

Climate (2020–Present)

Gwinnett County Airport-Briscoe Field (9.3 miles)

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  • Average Low 2020–2025

    52.9 °F

  • Average 2020–2025

    61.9 °F

  • Average High 2020–2025

    71.9 °F
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