Stonington Harbor Weather Forecast

    • 56
    • 82

    Chance Thunderstorms

    • 49
    • 66

    Chance Rain Showers

    • 48
    • 64

    Chance Rain Showers

    • 49
    • 60

    Rain Showers Likely

    • 52
    • 61

    Rain Showers Likely

    • 54
    • 66

    Slight Chance Rain Showers

Today 20 May Southern New London

Partly sunny. A chance of Showers and Thunderstorms this afternoon. Highs in the upper 80s. West Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 50 percent.

Tonight 20 May Southern New London

Mostly cloudy. A chance of Showers and Thunderstorms in the Evening, then a chance of Showers after midnight. Lows in the upper 50s. Northwest Winds 5 to 10 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Stonington Harbor Temperature Statistics

May Temperature

Westerly, Westerly State Airport (5.6 miles)

  • Lowest 4 May, 2026

    36 °F

  • Average May

    53.8 °F

  • Highest 17 May, 2026

    77 °F

Climate (2021–Present)

Westerly, Westerly State Airport (5.6 miles)

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  • Average Low 2021–2026

    44.2 °F

  • Average 2021–2026

    52.4 °F

  • Average High 2021–2026

    60.3 °F
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