Great South Bay Weather Forecast

    • 57
    • 73

    Partly Sunny

    • 57
    • 61

    Rain Showers

    • 49
    • 69

    Rain Showers

    • 45
    • 53

    Breezy

    • 53
    • 58

    Mostly Sunny

    • 56
    • 62

    Partly Sunny

Today 14 Oct Southwest Suffolk

Sunny. Highs in the mid 60s.

Tonight 14 Oct Southwest Suffolk

Partly cloudy. Lows in the lower 50s. Northwest 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)

  • Lowest 7 October, 2026

    39.7 °F

  • Average October

    61.3 °F

  • Highest 2 October, 2026

    79.6 °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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