Great South Bay Weather Forecast

    • 40
    • 52

    Breezy

    • 41
    • 49

    Partly Sunny

    • 53
    • 55

    Rain

    • 44
    • 57

    Chance Rain

    • 37
    • 47

    Breezy

    • 36
    • 43

    Breezy

Today 23 Nov Southwest Suffolk

Mostly sunny. Highs in the lower 50s. West Winds around 5 Mph, increasing to southwest 10 to 15 Mph this afternoon.

Tonight 23 Nov Southwest Suffolk

Partly cloudy in the Evening, then becoming mostly clear. Lows in the upper 30s. West Winds 15 to 20 Mph with Gusts up to 30 Mph.

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Great South Bay Temperature Statistics

November Temperature

Islip, Long Island Mac Arthur Airport (8.1 miles)

  • Lowest 20 November, 2025

    32 °F

  • Average November

    48.2 °F

  • Highest 8 November, 2025

    66.9 °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

    63.1 °F
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