Onslow Beach Weather Forecast

    • 77
    • 85

    Chance Thunderstorms

    • 76
    • 86

    Rain Showers Likely

    • 76
    • 84

    Chance Thunderstorms

    • 77
    • 86

    Chance Thunderstorms

    • 78
    • 87

    Mostly Sunny

    • 79
    • 89

    Mostly Sunny

Today 27 Aug Coastal Onslow

Mostly cloudy in the Morning, then becoming partly sunny. A chance of Showers. A slight chance of Thunderstorms in the Morning, then a chance of Thunderstorms in the afternoon. Highs in the upper 80s. Southwest Winds 5 to 10 Mph. Chance of rain 40 percent.

Tonight 27 Aug Coastal Onslow

Mostly cloudy with a chance of Showers and Thunderstorms. Lows in the mid 70s. Southwest Winds 5 to 10 Mph. Chance of rain 50 percent.

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Onslow Beach Temperature Statistics

August Temperature

MCAS New River (13 miles)

  • Lowest 21 August, 2026

    73 °F

  • Average August

    84.1 °F

  • Highest 17 August, 2026

    97 °F

Climate (2021–2026)

MCAS New River (13 miles)

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  • Average Low 2021–2026

    54.4 °F

  • Average 2021–2026

    63.8 °F

  • Average High 2021–2026

    73.6 °F
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