Castle Island Weather Forecast

    • 52
    • 66

    Rain Showers Likely

    • 47
    • 66

    Rain Showers

    • 45
    • 61

    Slight Chance Rain Showers

    • 42
    • 60

    Mostly Sunny

    • 36
    • 57

    Partly Sunny

    • 37
    • 56

    Partly Sunny

Today 21 Oct Newport

Sunny. Highs in the mid 60s. Southwest Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 21 Oct Newport

Partly cloudy in the Evening, then mostly cloudy with Showers likely after midnight. Near steady temperature in the upper 50s. South Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 70 percent.

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Castle Island Temperature Statistics

October Temperature

N. Kingston / Quonset (7.5 miles)

  • Lowest 10 October, 2025

    41 °F

  • Average October

    59.7 °F

  • Highest 5 October, 2025

    78.8 °F

Climate (2020–Present)

N. Kingston / Quonset (7.5 miles)

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  • Average Low 2020–2025

    50.7 °F

  • Average 2020–2025

    56.3 °F

  • Average High 2020–2025

    61.2 °F
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