Port Jefferson Weather Forecast

    • 19
    • 32

    Increasing Clouds

    • 19
    • 32

    Partly Sunny

    • 16
    • 29

    Partly Sunny

    • 15
    • 27

    Chance Snow Showers

    • 9
    • 21

    Blustery

    • 8
    • 19

    Partly Sunny

    • 15
    • 22

    Partly Sunny

Today 3 Feb Northwest Suffolk

Partly sunny. Highs in the lower 30s. West Winds 5 to 10 Mph.

Tonight 3 Feb Northwest Suffolk

Mostly cloudy this Evening, then becoming partly cloudy. Lows around 18. West Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Port Jefferson Temperature Statistics

February Temperature

Islip, Long Island Mac Arthur Airport (10.6 miles)

  • Lowest 1 February, 2026

    12 °F

  • Average February

    16.1 °F

  • Highest 1 February, 2026

    19.9 °F

Climate (2021–Present)

Islip, Long Island Mac Arthur Airport (10.6 miles)

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  • Average Low 2021–2026

    47.4 °F

  • Average 2021–2026

    55.2 °F

  • Average High 2021–2026

    63 °F
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