Lake Lanier Weather Forecast

    • 17
    • 37

    Sunny

    • 30
    • 44

    Partly Sunny

    • 28
    • 55

    Partly Sunny

    • 20
    • 45

    Chance Snow

    • 14
    • 27

    Snow

    • 9
    • 30

    Chance Snow

Today 20 Jan Henry

Sunny. Highs in the mid 30s. Northwest Winds 5 to 10 Mph.

Tonight 20 Jan Henry

Mostly clear. Cold with Lows around 17. Northwest Winds around 5 Mph in the Evening, becoming light and variable.

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Lake Lanier Temperature Statistics

January Temperature

Martinsville (9.3 miles)

  • Lowest 16 January, 2026

    11.7 °F

  • Average January

    41.4 °F

  • Highest 7 January, 2026

    70.3 °F

Climate (2021–Present)

Martinsville (9.3 miles)

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  • Average Low 2021–2026

    45.3 °F

  • Average 2021–2026

    57.1 °F

  • Average High 2021–2026

    69.1 °F
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