Duluth Weather Forecast

    • 67
    • 90

    Chance Thunderstorms

    • 67
    • 88

    Rain Showers Likely

    • 66
    • 85

    Rain Showers Likely

    • 66
    • 85

    Chance Thunderstorms

    • 66
    • 85

    Rain Showers Likely

    • 66
    • 85

    Rain Showers Likely

Today 20 May Gwinnett

Sunny in the Morning, then partly sunny with a chance of Showers and Thunderstorms in the afternoon. Highs in the upper 80s. Light southwest Winds. Chance of rain 40 percent.

Tonight 20 May Gwinnett

Mostly cloudy. A slight chance of Showers and Thunderstorms in the evening. Lows in the upper 60s. Light west Winds in the Evening, becoming light and variable. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Duluth Temperature Statistics

May Temperature

Gwinnett County Airport-Briscoe Field (10.6 miles)

  • Lowest 4 May, 2026

    44.1 °F

  • Average May

    66.3 °F

  • Highest 17 May, 2026

    89.1 °F

Climate (2021–Present)

Gwinnett County Airport-Briscoe Field (10.6 miles)

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  • Average Low 2021–2026

    53.2 °F

  • Average 2021–2026

    62.2 °F

  • Average High 2021–2026

    72.3 °F
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