Fair Harbor Weather Forecast

    • 68
    • 75

    Breezy

    • 66
    • 74

    Breezy

    • 66
    • 80

    Mostly Sunny

    • 66
    • 77

    Rain Showers Likely

    • 66
    • 74

    Rain Showers

    • 66
    • 78

    Slight Chance Rain Showers

    • 67
    • 77

    Partly Sunny

Today 18 Jun Southwest Suffolk

Partly sunny with a slight chance of Showers with isolated Thunderstorms. Some Thunderstorms may produce gusty Winds. Windy with Highs in the lower 80s. Southwest Winds 20 to 30 Mph with Gusts up to 50 Mph. Chance of rain 20 percent.

Tonight 18 Jun Southwest Suffolk

Partly cloudy this Evening, then becoming mostly cloudy. Windy with Lows in the upper 60s. Southwest Winds 20 to 30 Mph with Gusts up to 50 Mph, becoming west 10 to 15 Mph with Gusts up to 25 Mph after midnight.

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Fair Harbor Temperature Statistics

June Temperature

Islip, Long Island Mac Arthur Airport (11.2 miles)

  • Lowest 2 June, 2026

    46.7 °F

  • Average June

    70.8 °F

  • Highest 12 June, 2026

    94.6 °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 °F
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