Great South Bay Weather Forecast

    • 47
    • 59

    Sunny

    • 50
    • 58

    Mostly Cloudy

    • 45
    • 59

    Rain

    • 39
    • 50

    Rain

    • 42
    • 48

    Slight Chance Rain

    • 42
    • 50

    Partly Sunny

    • 42
    • 50

    Partly Sunny

Today 10 Nov Southwest Suffolk

Mostly sunny. Highs in the lower 50s.

Tonight 10 Nov Southwest Suffolk

Clear. Lows in the mid 40s. West Winds 10 to 15 Mph with Gusts up to 25 Mph.

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  • Temperature Forecast NOAA

  • 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

    57 °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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