Saint Simons Island Weather Forecast

    • 55
    • 64

    Increasing Clouds

    • 54
    • 70

    Mostly Sunny

    • 54
    • 72

    Partly Sunny

    • 54
    • 72

    Mostly Sunny

    • 56
    • 72

    Partly Sunny

    • 56
    • 73

    Partly Sunny

    • 51
    • 73

    Partly Sunny

Today 22 Dec Coastal Glynn

Sunny. Highs in the lower 60s. Northeast Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 22 Dec Coastal Glynn

Mostly cloudy. Lows in the lower 50s. Northeast Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Saint Simons Island Temperature Statistics

December Temperature

Brunswick, Malcolm McKinnon Airport (0.6 miles)

  • Lowest 15 December, 2025

    33.8 °F

  • Average December

    54.3 °F

  • Highest 5 December, 2025

    75.2 °F

Climate (2020–Present)

Brunswick, Malcolm McKinnon Airport (0.6 miles)

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  • Average Low 2020–2025

    62.9 °F

  • Average 2020–2025

    70.2 °F

  • Average High 2020–2025

    77.9 °F
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