Great South Bay Weather Forecast

    • 39
    • 49

    Rain

    • 43
    • 47

    Breezy

    • 42
    • 49

    Partly Sunny

    • 42
    • 50

    Mostly Sunny

    • 45
    • 53

    Partly Sunny

Today 13 Nov Southwest Suffolk

Rain, breezy with Highs in the upper 40s. Northeast Winds 15 to 25 Mph with Gusts up to 35 Mph. Chance of rain 90 percent.

Tonight 13 Nov Southwest Suffolk

Cloudy. A chance of rain in the evening. Lows in the upper 30s. North Winds 10 to 15 Mph. Gusts up to 30 Mph in the evening. Chance of rain 50 percent.

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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 °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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