Port Jefferson Weather Forecast

    • 51
    • 64

    Rain Showers Likely

    • 48
    • 63

    Partly Sunny

    • 52
    • 64

    Partly Sunny

    • 53
    • 69

    Chance Rain Showers

    • 55
    • 77

    Rain Showers Likely

    • 50
    • 71

    Rain Showers Likely

Today 6 May Northwest Suffolk

Mostly cloudy. Showers likely this afternoon. Highs in the mid 60s. South Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 70 percent.

Tonight 6 May Northwest Suffolk

Mostly cloudy. Showers Likely, mainly in the evening. Lows in the lower 50s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph, becoming northwest 5 to 10 Mph after midnight. Chance of rain 70 percent.

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Port Jefferson Temperature Statistics

May Temperature

Islip, Long Island Mac Arthur Airport (10.6 miles)

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Climate (2021–Present)

Islip, Long Island Mac Arthur Airport (10.6 miles)

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  • Average Low 2021–2026

    47.3 °F

  • Average 2021–2026

    55.1 °F

  • Average High 2021–2026

    63 °F
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