Duluth Weather Forecast

    • 38
    • 59

    Mostly Sunny

    • 39
    • 61

    Mostly Sunny

    • 40
    • 54

    Partly Sunny

    • 46
    • 60

    Mostly Cloudy

    • 49
    • 67

    Partly Sunny

    • 52
    • 71

    Partly Sunny

Today 20 Dec Gwinnett

Sunny. Highs in the upper 50s. Light southeast Winds.

Tonight 20 Dec Gwinnett

Mostly clear. Lows in the upper 30s. Light southeast Winds, becoming northwest after midnight.

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Duluth Temperature Statistics

December Temperature

Gwinnett County Airport-Briscoe Field (10.6 miles)

  • Lowest 16 December, 2025

    23 °F

  • Average December

    41.4 °F

  • Highest 13 December, 2025

    68 °F

Climate (2020–Present)

Gwinnett County Airport-Briscoe Field (10.6 miles)

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  • Average Low 2020–2025

    52.9 °F

  • Average 2020–2025

    61.9 °F

  • Average High 2020–2025

    72 °F
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