Charlestown Weather Forecast

    • 60
    • 77

    Rain Showers

    • 52
    • 69

    Rain Showers Likely

    • 53
    • 72

    Partly Sunny

    • 55
    • 71

    Chance Rain Showers

    • 55
    • 69

    Rain Showers Likely

    • 51
    • 75

    Partly Sunny

    • 50
    • 68

    Mostly Sunny

Today 6 Sep Washington

Partly sunny with isolated Showers and Thunderstorms. Some Thunderstorms may produce damaging Winds, frequent Lightning, and heavy rainfall. Near steady temperature in the upper 70s. South Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 20 percent.

Tonight 6 Sep Washington

Showers with a slight chance of Thunderstorms. Lows around 60. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph, becoming north around 5 Mph after midnight. Chance of rain 90 percent.

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Charlestown Temperature Statistics

September Temperature

Westerly, Westerly State Airport (8.1 miles)

  • Lowest 4 September, 2025

    48 °F

  • Average September

    62 °F

  • Highest 2 September, 2025

    73 °F

Climate (2020–Present)

Westerly, Westerly State Airport (8.1 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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