Barn Island Weather Forecast

    • 53
    • 79

    Mostly Sunny

    • 50
    • 70

    Sunny

    • 50
    • 68

    Partly Sunny

    • 58
    • 70

    Mostly Sunny

    • 59
    • 76

    Partly Sunny

    • 54
    • 74

    Slight Chance Rain Showers

Today 19 Sep Southern New London

Sunny. Highs in the upper 70s. Northwest Winds 5 to 10 Mph.

Tonight 19 Sep Southern New London

Mostly clear. Less humid with Lows in the lower 50s. North Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Barn Island Temperature Statistics

September Temperature

Westerly, Westerly State Airport (3.7 miles)

  • Lowest 4 September, 2025

    48 °F

  • Average September

    63.7 °F

  • Highest 6 September, 2025

    78.1 °F

Climate (2020–Present)

Westerly, Westerly State Airport (3.7 miles)

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  • Average Low 2020–2025

    44.3 °F

  • Average 2020–2025

    52.6 °F

  • Average High 2020–2025

    60.4 °F
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