Southwest Point Weather Forecast

    • 64
    • 74

    Partly Sunny

    • 65
    • 72

    Chance Rain Showers

    • 64
    • 71

    Chance Rain Showers

    • 64
    • 72

    Slight Chance Rain Showers

    • 59
    • 71

    Partly Sunny

    • 53
    • 65

    Partly Sunny

Today 26 Sep Block Island

Partly sunny. Near steady temperature in the lower 70s. West Winds around 10 Mph.

Tonight 26 Sep Block Island

Mostly clear in the Evening, then becoming partly cloudy. Humid with Lows in the mid 60s. West Winds 5 to 10 Mph, becoming northwest after midnight.

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  • Temperature Forecast NOAA

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Southwest Point Temperature Statistics

September Temperature

Block Island State Airport (1.9 miles)

  • Lowest 13 September, 2025

    53.1 °F

  • Average September

    65 °F

  • Highest 19 September, 2025

    79 °F

Climate (2020–Present)

Block Island State Airport (1.9 miles)

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  • Average Low 2020–2025

    47.1 °F

  • Average 2020–2025

    52.4 °F

  • Average High 2020–2025

    57.8 °F
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