Block Island Weather Forecast

    • 71
    • 79

    Slight Chance Thunderstorms

    • 71
    • 78

    Chance Rain Showers

    • 69
    • 79

    Mostly Sunny

    • 70
    • 77

    Partly Sunny

    • 69
    • 77

    Chance Rain Showers

    • 68
    • 76

    Chance Rain Showers

Today 7 Aug Block Island

Sunny. Patchy fog this morning. Highs in the upper 70s. Southwest Winds 10 to 15 Mph.

Tonight 7 Aug Block Island

Partly cloudy in the Evening, then mostly cloudy with a slight chance of Showers and Thunderstorms after midnight. Patchy fog after midnight. Humid with Lows in the lower 70s. Southwest Winds 10 to 15 Mph. Chance of rain 20 percent.

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  • Temperature Real-Time

Block Island Temperature Statistics

August Temperature

Block Island State Airport (0 miles)

  • Lowest 4 August, 2026

    64 °F

  • Average August

    72.2 °F

  • Highest 4 August, 2026

    79 °F

Climate (2021–2026)

Block Island State Airport (0 miles)

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  • Average Low 2021–2026

    46.8 °F

  • Average 2021–2026

    52.1 °F

  • Average High 2021–2026

    57.5 °F
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