Great South Bay Weather Forecast

    • 59
    • 67

    Increasing Clouds

    • 60
    • 68

    Rain Showers

    • 57
    • 66

    Rain Showers

    • 50
    • 62

    Slight Chance Rain Showers

    • 49
    • 58

    Partly Sunny

    • 48
    • 57

    Chance Rain

Today 4 Nov Southwest Suffolk

Sunny. Highs around 70. Southwest Winds 5 to 10 Mph.

Tonight 4 Nov Southwest Suffolk

Partly cloudy. Lows in the upper 50s. South Winds 5 to 10 Mph.

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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

    37 °F

  • Average November

    50.5 °F

  • Highest 2 November, 2026

    64.9 °F

Climate (2021–2026)

Islip, Long Island Mac Arthur Airport (8.1 miles)

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  • Average Low 2021–2026

    47.1 °F

  • Average 2021–2026

    55.1 °F

  • Average High 2021–2026

    63.1 °F
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