Great South Bay Weather Forecast

    • 41
    • 51

    Decreasing Clouds

    • 42
    • 51

    Partly Sunny

    • 47
    • 54

    Mostly Sunny

    • 49
    • 58

    Mostly Sunny

    • 51
    • 58

    Mostly Sunny

    • 50
    • 59

    Mostly Sunny

Today 15 Nov Southwest Suffolk

Sunny. Highs in the lower 50s. Northwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 15 Nov Southwest Suffolk

Partly cloudy in the Evening, then becoming mostly clear. Lows in the mid 30s. Northwest Winds 10 to 15 Mph.

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  • Temperature Real-Time

Great South Bay Temperature Statistics

November Temperature

Islip, Long Island Mac Arthur Airport (8.1 miles)

  • Lowest 1 November, 2026

    36.6 °F

  • Average November

    54.7 °F

  • Highest 5 November, 2026

    70.6 °F

Climate (2021–2026)

Islip, Long Island Mac Arthur Airport (8.1 miles)

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  • Average Low 2021–2026

    47.2 °F

  • Average 2021–2026

    55.2 °F

  • Average High 2021–2026

    63.1 °F
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