Castle Island Weather Forecast

    • 25
    • 46

    Partly Sunny

    • 34
    • 37

    Rain

    • 34
    • 37

    Chance Rain

    • 43
    • 50

    Chance Rain

    • 38
    • 52

    Partly Sunny

    • 41
    • 55

    Mostly Sunny

    • 45
    • 57

    Partly Sunny

Today 4 Mar Newport

Mostly sunny. Not as cool with Highs in the upper 40s. Temperature falling into the lower 40s late. Southwest Winds around 5 Mph.

Tonight 4 Mar Newport

Mostly clear this Evening, then becoming mostly cloudy. Areas of fog after midnight. Lows in the mid 20s. South Winds around 5 Mph this Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Castle Island Temperature Statistics

March Temperature

N. Kingston / Quonset (7.5 miles)

  • Lowest 2 March, 2026

    15.8 °F

  • Average March

    26.7 °F

  • Highest 1 March, 2026

    37.4 °F

Climate (2021–Present)

N. Kingston / Quonset (7.5 miles)

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  • Average Low 2021–2026

    50.2 °F

  • Average 2021–2026

    55.8 °F

  • Average High 2021–2026

    60.9 °F
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