Great South Bay Weather Forecast

    • 54
    • 60

    Mostly Cloudy

    • 48
    • 59

    Rain

    • 43
    • 50

    Rain

    • 42
    • 48

    Slight Chance Rain

    • 42
    • 50

    Partly Sunny

    • 41
    • 50

    Partly Sunny

Today 11 Nov Southwest Suffolk

Mostly sunny. Highs in the lower 60s. West Winds 5 to 10 Mph, becoming southwest this afternoon.

Tonight 11 Nov Southwest Suffolk

Mostly cloudy. Lows in the upper 40s. South Winds around 5 Mph, increasing to southeast 10 to 15 Mph after midnight.

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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

    56.5 °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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