Port Jefferson Weather Forecast

    • 49
    • 58

    Breezy

    • 49
    • 62

    Windy

    • 43
    • 53

    Mostly Sunny

    • 55
    • 59

    Mostly Cloudy

    • 47
    • 59

    Chance Rain

    • 44
    • 57

    Chance Rain

Today 4 Nov Northwest Suffolk

Sunny, breezy with Highs in the upper 50s. Northwest Winds 15 to 25 Mph with Gusts up to 35 Mph.

Tonight 4 Nov Northwest Suffolk

Mostly clear. Lows in the lower 40s. West Winds 10 to 15 Mph with Gusts up to 25 Mph.

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Port Jefferson Temperature Statistics

November Temperature

Islip, Long Island Mac Arthur Airport (10.6 miles)

  • Lowest 1 November, 2025

    44.1 °F

  • Average November

    53.3 °F

  • Highest 1 November, 2025

    60.1 °F

Climate (2020–Present)

Islip, Long Island Mac Arthur Airport (10.6 miles)

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  • Average Low 2020–2025

    47.5 °F

  • Average 2020–2025

    55.3 °F

  • Average High 2020–2025

    63.2 °F
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