Intracoastal Waterway - William Island Weather Forecast

    • 26
    • 41

    Mostly Sunny

    • 26
    • 46

    Mostly Sunny

    • 29
    • 45

    Mostly Cloudy

    • 26
    • 50

    Snow Likely

    • 16
    • 35

    Snow Likely

    • 17
    • 34

    Mostly Sunny

    • 22
    • 40

    Mostly Sunny

Today 27 Jan Coastal Horry

Sunny. Highs in the lower 40s. Southwest Winds 5 to 10 Mph.

Tonight 27 Jan Coastal Horry

Clear in the Evening, then becoming partly cloudy. Lows in the mid 20s. West Winds 5 to 10 Mph.

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Intracoastal Waterway - William Island Temperature Statistics

January Temperature

North Myrtle Beach Grand Strand Airport (3.7 miles)

  • Lowest 21 January, 2026

    26.7 °F

  • Average January

    48.2 °F

  • Highest 7 January, 2026

    72.6 °F

Climate (2021–Present)

North Myrtle Beach Grand Strand Airport (3.7 miles)

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  • Average Low 2021–2026

    56.6 °F

  • Average 2021–2026

    64.9 °F

  • Average High 2021–2026

    73.3 °F
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