Great South Bay Weather Forecast

    • 52
    • 60

    Mostly Cloudy

    • 39
    • 60

    Rain Showers

    • 37
    • 49

    Rain

    • 42
    • 48

    Breezy

    • 42
    • 50

    Partly Sunny

    • 41
    • 49

    Mostly Sunny

    • 43
    • 50

    Partly Sunny

Today 11 Nov Southwest Suffolk

Sunny. Highs in the mid 50s.

Tonight 11 Nov Southwest Suffolk

Mostly clear in the Evening, then becoming mostly cloudy. Lows around 50. Southeast Winds 5 to 10 Mph, becoming east 10 to 15 Mph after midnight.

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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

    56.5 °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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