Portsmouth Island Weather Forecast

    • 74
    • 82

    Increasing Clouds

    • 75
    • 85

    Slight Chance Thunderstorms

    • 70
    • 80

    Chance Thunderstorms

    • 73
    • 78

    Chance Rain Showers

    • 73
    • 78

    Chance Rain Showers

    • 72
    • 79

    Chance Rain Showers

Today 5 Sep East Carteret

Sunny. Highs in the mid 80s. Southwest Winds around 5 Mph, becoming southeast this afternoon.

Tonight 5 Sep East Carteret

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the lower 70s. Southeast Winds 5 to 10 Mph.

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  • Temperature Real-Time

Portsmouth Island Temperature Statistics

September Temperature

Piney Island, Bt-11 Bombing Range (21.7 miles)

  • Lowest 1 September, 2025

    69.1 °F
  • Average September

    72.6 °F
  • Highest 3 September, 2025

    78.1 °F

Climate (2020–Present)

Piney Island, Bt-11 Bombing Range (21.7 miles)

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  • Average Low 2020–2025

    63.1 °F
  • Average 2020–2025

    68.6 °F
  • Average High 2020–2025

    74.6 °F
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