Castle Island Weather Forecast

    • 70
    • 80

    Rain Showers

    • 69
    • 78

    Rain Showers

    • 68
    • 81

    Chance Rain Showers

    • 70
    • 83

    Partly Sunny

    • 72
    • 84

    Slight Chance Thunderstorms

    • 71
    • 86

    Slight Chance Thunderstorms

Today 2 Aug Newport

Mostly cloudy. Patchy fog in the morning. Humid with Highs in the upper 70s. South Winds 5 to 10 Mph.

Tonight 2 Aug Newport

Cloudy. A chance of Showers in the Evening, then Showers with a chance of Thunderstorms after midnight. Patchy fog after midnight. Locally heavy rainfall possible after midnight. Humid with Lows in the upper 60s. South Winds 10 to 15 Mph. Chance of rain 70 percent.

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Castle Island Temperature Statistics

August Temperature

N. Kingston / Quonset (7.5 miles)

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  • Average August

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Climate (2021–2026)

N. Kingston / Quonset (7.5 miles)

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  • Average Low 2021–2026

    49.8 °F

  • Average 2021–2026

    55.4 °F

  • Average High 2021–2026

    60.9 °F
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