Block Island Weather Forecast

    • 39
    • 44

    Rain Showers

    • 37
    • 46

    Partly Sunny

    • 38
    • 43

    Rain Likely

    • 31
    • 42

    Slight Chance Rain

    • 34
    • 39

    Mostly Cloudy

    • 32
    • 42

    Chance Rain

Today 20 Mar Block Island

Mostly sunny. Highs in the mid 40s. West Winds around 5 Mph, increasing to south 15 to 20 Mph with Gusts up to 30 Mph this afternoon.

Tonight 20 Mar Block Island

Showers, breezy. Near steady temperature in the lower 40s. Southwest Winds 15 to 25 Mph with Gusts up to 35 Mph. Chance of rain 90 percent.

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  • Temperature Forecast NOAA

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Block Island Temperature Statistics

March Temperature

Block Island State Airport (0.6 miles)

  • Lowest 2 March, 2026

    18 °F

  • Average March

    37.1 °F

  • Highest 9 March, 2026

    59 °F

Climate (2021–Present)

Block Island State Airport (0.6 miles)

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  • Average Low 2021–2026

    46.8 °F

  • Average 2021–2026

    52.1 °F

  • Average High 2021–2026

    57.6 °F
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