Port Jefferson Weather Forecast

    • 61
    • 85

    Chance Thunderstorms

    • 70
    • 86

    Chance Thunderstorms

    • 70
    • 86

    Rain Showers Likely

    • 67
    • 85

    Rain Showers Likely

    • 64
    • 82

    Rain Showers Likely

    • 61
    • 80

    Chance Thunderstorms

Today 8 Aug Shelby

Partly cloudy. Patchy fog this morning. A chance of Showers and Thunderstorms this afternoon. Highs in the mid 80s. Southwest Winds 5 to 10 Mph. Chance of rain 40 percent.

Tonight 8 Aug Shelby

Partly cloudy with a chance of Showers and Thunderstorms in the Evening, then mostly clear after midnight. Lows around 60. Northwest Winds 5 to 10 Mph. Chance of rain 30 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Port Jefferson Temperature Statistics

August Temperature

Bellefontaine Regional Airport (14.3 miles)

  • Lowest 4 August, 2026

    55.4 °F

  • Average August

    71.4 °F

  • Highest 4 August, 2026

    84.2 °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

    64.4 °F
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