Great South Bay Weather Forecast

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    • 77

    Chance Rain Showers

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    • 79

    Mostly Sunny

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    Partly Sunny

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    Chance Rain Showers

Today 19 Jun Southwest Suffolk

Mostly cloudy this Morning, then becoming partly sunny. Highs in the lower 80s. West Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 19 Jun Southwest Suffolk

Mostly clear. Lows in the mid 60s. West Winds 10 to 15 Mph with Gusts up to 25 Mph.

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Great South Bay Temperature Statistics

June Temperature

Islip, Long Island Mac Arthur Airport (8.1 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 (8.1 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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