Saint Simons Island Weather Forecast

    • 37
    • 52

    Mostly Sunny

    • 45
    • 64

    Mostly Sunny

    • 42
    • 60

    Mostly Sunny

    • 48
    • 64

    Mostly Sunny

    • 52
    • 68

    Partly Sunny

    • 43
    • 71

    Mostly Sunny

    • 43
    • 56

    Partly Sunny

Today 9 Dec Coastal Glynn

Mostly sunny. Highs in the lower 50s. North Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 9 Dec Coastal Glynn

Mostly clear. Patchy frost. Lows in the mid 30s. North Winds around 5 Mph.

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  • Temperature Real-Time

Saint Simons Island Temperature Statistics

December Temperature

Brunswick, Malcolm McKinnon Airport (0.6 miles)

  • Lowest 4 December, 2025

    41 °F

  • Average December

    56.9 °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

    63 °F

  • Average 2020–2025

    70.2 °F

  • Average High 2020–2025

    77.9 °F
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