Fire Island Weather Forecast

    • 40
    • 44

    Rain Showers

    • 36
    • 52

    Chance Thunderstorms

    • 27
    • 39

    Breezy

    • 32
    • 35

    Mostly Cloudy

    • 37
    • 41

    Mostly Cloudy

    • 38
    • 44

    Chance Rain

Today 15 Mar Southwest Suffolk

Mostly cloudy this Morning, then becoming partly sunny. Highs in the upper 40s. Northeast Winds 5 to 10 Mph, becoming southeast 10 to 15 Mph this afternoon.

Tonight 15 Mar Southwest Suffolk

Showers with a slight chance of Thunderstorms after midnight. Areas of fog after midnight. Breezy with Lows around 40. Southeast Winds 10 to 15 Mph with Gusts up to 25 Mph, increasing to 20 to 25 Mph with Gusts up to 40 Mph after midnight. Chance of rain near 100 percent.

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Fire Island Temperature Statistics

March Temperature

Islip, Long Island Mac Arthur Airport (9.9 miles)

  • Lowest 3 March, 2026

    18.6 °F

  • Average March

    39.7 °F

  • Highest 9 March, 2026

    66.9 °F

Climate (2021–Present)

Islip, Long Island Mac Arthur Airport (9.9 miles)

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  • Average Low 2021–2026

    47.3 °F

  • Average 2021–2026

    55.1 °F

  • Average High 2021–2026

    63 °F
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