Stonington Harbor Weather Forecast

    • 50
    • 65

    Partly Sunny

    • 50
    • 66

    Breezy

    • 54
    • 63

    Rain Showers Likely

    • 55
    • 63

    Rain Showers

    • 55
    • 63

    Rain Showers Likely

    • 54
    • 65

    Mostly Cloudy

    • 55
    • 68

    Partly Sunny

Today 23 Sep Southern New London

Mostly sunny. Highs around 70.

Tonight 23 Sep Southern New London

Partly cloudy this Evening, then clearing. Lows in the upper 40s. Northeast Winds 15 to 20 Mph with Gusts up to 30 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Stonington Harbor Temperature Statistics

September Temperature

Westerly, Westerly State Airport (5.6 miles)

  • Lowest 15 September, 2026

    48 °F

  • Average September

    66.6 °F

  • Highest 4 September, 2026

    82 °F

Climate (2021–2026)

Westerly, Westerly State Airport (5.6 miles)

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  • Average Low 2021–2026

    44.2 °F

  • Average 2021–2026

    52.5 °F

  • Average High 2021–2026

    60.4 °F
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