Great South Bay Weather Forecast

    • 50
    • 59

    Mostly Sunny

    • 47
    • 57

    Breezy

    • 51
    • 59

    Mostly Sunny

    • 50
    • 58

    Partly Sunny

    • 46
    • 56

    Mostly Cloudy

    • 41
    • 49

    Slight Chance Rain

Today 8 Nov Southwest Suffolk

Mostly sunny. Highs in the upper 40s.

Tonight 8 Nov Southwest Suffolk

Mostly clear. Lows in the lower 40s. West Winds 15 to 20 Mph with Gusts up to 30 Mph.

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  • Temperature Real-Time

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

    57.5 °F

  • Highest 4 November, 2026

    69.7 °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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