Great South Bay Weather Forecast

    • 67
    • 70

    Mostly Cloudy

    • 61
    • 73

    Partly Sunny

    • 58
    • 68

    Chance Rain Showers

    • 59
    • 65

    Chance Rain Showers

    • 51
    • 67

    Mostly Sunny

    • 51
    • 58

    Mostly Sunny

Today 1 Oct Southwest Suffolk

Mostly cloudy in the Morning, then becoming partly sunny. Highs in the lower 70s. Southwest Winds 5 to 10 Mph.

Tonight 1 Oct Southwest Suffolk

Partly cloudy. Lows in the mid 60s. Southwest Winds 10 to 15 Mph.

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Great South Bay Temperature Statistics

October Temperature

Islip, Long Island Mac Arthur Airport (8.1 miles)

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  • Average October

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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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