Great South Bay Weather Forecast

    • 54
    • 64

    Decreasing Clouds

    • 53
    • 59

    Rain

    • 31
    • 56

    Chance Rain Showers

    • 42
    • 45

    Breezy

    • 46
    • 52

    Breezy

    • 43
    • 50

    Breezy

    • 41
    • 50

    Partly Sunny

Today 8 Nov Southwest Suffolk

Sunny. Highs in the mid 60s. Northwest Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 8 Nov Southwest Suffolk

Mostly cloudy this Evening, then becoming partly cloudy. Lows in the upper 40s. North Winds around 5 Mph, becoming east with Gusts up to 20 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 2 November, 2025

    37 °F

  • Average November

    52 °F

  • Highest 5 November, 2025

    64 °F

Climate (2020–Present)

Islip, Long Island Mac Arthur Airport (8.1 miles)

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  • Average Low 2020–2025

    47.5 °F

  • Average 2020–2025

    55.3 °F

  • Average High 2020–2025

    63.2 °F
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