Smithtown Bay Weather Forecast

    • 38
    • 42

    Increasing Clouds

    • 39
    • 51

    Rain

    • 35
    • 42

    Partly Sunny

    • 35
    • 43

    Rain

    • 37
    • 41

    Partly Sunny

    • 28
    • 41

    Breezy

    • 33
    • 37

    Mostly Cloudy

Today 29 Nov Northwest Suffolk

Sunny. Highs in the lower 40s. Northwest Winds 5 to 10 Mph.

Tonight 29 Nov Northwest Suffolk

Partly cloudy this Evening, then becoming cloudy. Lows in the lower 30s. North Winds around 5 Mph, becoming southeast after midnight.

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Smithtown Bay Temperature Statistics

November Temperature

Islip, Long Island Mac Arthur Airport (11.2 miles)

  • Lowest 23 November, 2025

    30 °F

  • Average November

    48 °F

  • Highest 8 November, 2025

    66.9 °F

Climate (2020–Present)

Islip, Long Island Mac Arthur Airport (11.2 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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