Onslow Beach Weather Forecast

    • 79
    • 89

    Chance Thunderstorms

    • 82
    • 87

    Slight Chance Thunderstorms

    • 81
    • 91

    Mostly Sunny

    • 80
    • 90

    Chance Thunderstorms

    • 81
    • 87

    Chance Thunderstorms

    • 81
    • 89

    Chance Thunderstorms

Today 15 Aug Coastal Onslow

Mostly sunny. A chance of Showers and Thunderstorms in the afternoon. Highs in the lower 90s. West Winds around 5 Mph, becoming south in the afternoon. Chance of rain 50 percent. Heat index Values up to 111.

Tonight 15 Aug Coastal Onslow

Mostly cloudy with a chance of Showers. A chance of Thunderstorms, mainly in the evening. Lows in the mid 70s. South Winds around 5 Mph, becoming northeast after midnight. Chance of rain 50 percent. Heat index Values up to 103 early in the evening.

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Onslow Beach Temperature Statistics

August Temperature

MCAS New River (13 miles)

  • Lowest 4 August, 2026

    75 °F

  • Average August

    82.1 °F

  • Highest 11 August, 2026

    95 °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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