Port Jefferson Weather Forecast

    • 37
    • 44

    Mostly Cloudy

    • 22
    • 42

    Partly Sunny

    • 32
    • 32

    Rain

    • 34
    • 46

    Rain

    • 29
    • 39

    Slight Chance Snow

    • 33
    • 37

    Chance Rain/Snow

Today 3 Feb Northwest Suffolk

Mostly cloudy. Highs in the mid 40s. Southwest Winds 5 to 10 Mph.

Tonight 3 Feb Northwest Suffolk

Mostly cloudy. Lows in the mid 30s. Southwest Winds 5 to 10 Mph, becoming west with Gusts up to 20 Mph after midnight.

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Port Jefferson Temperature Statistics

February Temperature

Islip, Long Island Mac Arthur Airport (10.6 miles)

  • Lowest

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  • Average February

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Climate (2020–Present)

Islip, Long Island Mac Arthur Airport (10.6 miles)

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  • Average Low 2020–2025

    47.3 °F

  • Average 2020–2025

    55 °F

  • Average High 2020–2025

    62.8 °F
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