Great South Bay Weather Forecast

    • 46
    • 62

    Rain Showers

    • 36
    • 48

    Rain

    • 37
    • 48

    Breezy

    • 42
    • 50

    Partly Sunny

    • 40
    • 49

    Mostly Sunny

    • 44
    • 52

    Partly Sunny

Today 12 Nov Southwest Suffolk

Sunny. Highs in the upper 50s.

Tonight 12 Nov Southwest Suffolk

Showers this Evening, then rain after midnight. Breezy with Lows in the mid 40s. Northeast Winds 15 to 25 Mph with Gusts up to 40 Mph. Chance of rain near 100 percent.

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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

    56.2 °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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