Intracoastal Waterway - William Island Weather Forecast

    • 63
    • 73

    Chance Rain Showers

    • 59
    • 74

    Rain Showers

    • 56
    • 73

    Partly Sunny

    • 63
    • 74

    Mostly Cloudy

    • 64
    • 78

    Mostly Cloudy

    • 63
    • 80

    Partly Sunny

    • 63
    • 80

    Partly Sunny

Today 30 Mar Coastal Horry

Partly sunny with a slight chance of Showers. A slight chance of Thunderstorms this afternoon. Near steady temperature around 70. South Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 30 Mar Coastal Horry

Mostly cloudy with a chance of Showers. A slight chance of Thunderstorms after midnight. Patchy fog after midnight. Lows in the lower 60s. South Winds 5 to 10 Mph. Chance of rain 50 percent.

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Intracoastal Waterway - William Island Temperature Statistics

March Temperature

North Myrtle Beach Grand Strand Airport (3.7 miles)

  • Lowest 3 March, 2025

    29.8 °F

  • Average March

    57.4 °F

  • Highest 8 March, 2025

    79.6 °F

Climate (2020–Present)

North Myrtle Beach Grand Strand Airport (3.7 miles)

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  • Average Low 2020–2025

    56.8 °F

  • Average 2020–2025

    65 °F

  • Average High 2020–2025

    73.3 °F
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