Port Jefferson Weather Forecast

    • 54
    • 75

    Becoming Sunny

    • 60
    • 78

    Partly Sunny

    • 61
    • 80

    Rain Showers Likely

    • 64
    • 79

    Rain Showers Likely

    • 65
    • 80

    Chance Rain Showers

    • 70
    • 85

    Slight Chance Thunderstorms

Today 23 Jun Shelby

Mostly sunny. Highs in the mid 70s. North Winds 5 to 10 Mph.

Tonight 23 Jun Shelby

Mostly clear. Lows in the mid 50s. Northwest Winds around 5 Mph in the Evening, becoming light and variable.

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Port Jefferson Temperature Statistics

June Temperature

Bellefontaine Regional Airport (14.3 miles)

  • Lowest 5 June, 2026

    64.4 °F

  • Average June

    74.9 °F

  • Highest 9 June, 2026

    89.6 °F

Climate (2021–2026)

Bellefontaine Regional Airport (14.3 miles)

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  • Average Low 2021–2026

    47.1 °F

  • Average 2021–2026

    55.7 °F

  • Average High 2021–2026

    64.5 °F
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