Griswold Weather Forecast

    • 56
    • 71

    Decreasing Clouds

    • 58
    • 82

    Mostly Sunny

    • 63
    • 84

    Mostly Sunny

    • 64
    • 79

    Rain Showers Likely

    • 59
    • 79

    Chance Rain Showers

    • 54
    • 79

    Mostly Sunny

Today 21 Aug Northern New London

Mostly cloudy. A chance of Showers this morning. Highs in the lower 70s. Northeast Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 30 percent.

Tonight 21 Aug Northern New London

Mostly cloudy in the Evening, then becoming partly cloudy. Lows in the mid 50s. Northeast Winds 10 to 15 Mph with Gusts up to 30 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Griswold Temperature Statistics

August Temperature

Westerly, Westerly State Airport (16.8 miles)

  • Lowest 9 August, 2025

    50.6 °F

  • Average August

    70.3 °F

  • Highest 15 August, 2025

    87.7 °F

Climate (2020–Present)

Westerly, Westerly State Airport (16.8 miles)

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  • Average Low 2020–2025

    44.4 °F

  • Average 2020–2025

    52.6 °F

  • Average High 2020–2025

    60.4 °F
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