Saint Helena Island Weather Forecast

    • 34
    • 46

    Mostly Cloudy

    • 39
    • 52

    Mostly Cloudy

    • 48
    • 53

    Chance Rain Showers

    • 48
    • 59

    Rain Showers

    • 34
    • 56

    Chance Rain Showers

    • 39
    • 55

    Mostly Sunny

Today 13 Mar Southern New Haven

Partly sunny. Highs in the mid 40s. East Winds 5 to 10 Mph. Gusts up to 20 Mph this afternoon.

Tonight 13 Mar Southern New Haven

Mostly cloudy. Lows in the mid 30s. East Winds 5 to 10 Mph, becoming northeast after midnight.

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Saint Helena Island Temperature Statistics

March Temperature

New Haven, Tweed-New Haven Airport (5.6 miles)

  • Lowest 3 March, 2025

    18.8 °F

  • Average March

    39.1 °F

  • Highest 10 March, 2025

    61 °F

Climate (2020–Present)

New Haven, Tweed-New Haven Airport (5.6 miles)

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  • Average Low 2020–2025

    47.5 °F

  • Average 2020–2025

    55.6 °F

  • Average High 2020–2025

    63.4 °F
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