Fair Harbor Weather Forecast

    • 70
    • 79

    Rain Showers

    • 72
    • 78

    Mostly Cloudy

    • 74
    • 79

    Chance Rain Showers

    • 75
    • 80

    Chance Rain Showers

    • 75
    • 81

    Chance Rain Showers

    • 74
    • 81

    Chance Rain Showers

Today 3 Aug Southwest Suffolk

Showers with a chance of Thunderstorms. Breezy with Highs around 80. Southwest Winds 15 to 25 Mph with Gusts up to 35 Mph. Chance of rain near 100 percent.

Tonight 3 Aug Southwest Suffolk

Mostly cloudy with Showers with a chance of Thunderstorms in the Evening, then partly cloudy after midnight. Humid with Lows in the upper 60s. West Winds 15 to 20 Mph with Gusts up to 30 Mph, becoming north 5 to 10 Mph after midnight. Chance of rain 80 percent.

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Fair Harbor Temperature Statistics

August Temperature

Islip, Long Island Mac Arthur Airport (11.2 miles)

  • Lowest 1 August, 2026

    73 °F

  • Average August

    76.9 °F

  • Highest 1 August, 2026

    82 °F

Climate (2021–2026)

Islip, Long Island Mac Arthur Airport (11.2 miles)

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  • Average Low 2021–2026

    47.3 °F

  • Average 2021–2026

    55.2 °F

  • Average High 2021–2026

    63.1 °F
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