Oyster Bay Weather Forecast

    • 27
    • 48

    Becoming Sunny

    • 28
    • 52

    Sunny

    • 29
    • 50

    Mostly Sunny

    • 42
    • 56

    Chance Rain Showers

    • 37
    • 60

    Slight Chance Rain Showers

    • 41
    • 56

    Mostly Cloudy

    • 40
    • 60

    Chance Rain Showers

Today 18 Jan Charleston

Showers, cooler with Highs in the upper 40s. Northwest Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain near 100 percent.

Tonight 18 Jan Charleston

Partly cloudy this Evening, then clearing. Cooler with Lows in the upper 20s. West Winds 10 to 15 Mph, Diminishing to around 5 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Oyster Bay Temperature Statistics

January Temperature

Georgetown County Airport (18.6 miles)

  • Lowest 16 January, 2026

    21.2 °F

  • Average January

    49.5 °F

  • Highest 9 January, 2026

    77 °F

Climate (2021–Present)

Georgetown County Airport (18.6 miles)

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  • Average Low 2021–2026

    54.5 °F

  • Average 2021–2026

    63.9 °F

  • Average High 2021–2026

    74.2 °F
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