Griswold Weather Forecast

    • 74
    • 89

    Chance Rain Showers

    • 73
    • 88

    Chance Rain Showers

    • 66
    • 88

    Mostly Sunny

    • 71
    • 86

    Partly Sunny

    • 67
    • 86

    Chance Rain Showers

    • 65
    • 83

    Chance Rain Showers

Today 7 Aug Northern New London

Sunny. Patchy fog this morning. A slight chance of Showers and Thunderstorms this afternoon. Highs in the upper 80s. West Winds 5 to 10 Mph. Chance of rain 20 percent. Heat index Values in the upper 90s.

Tonight 7 Aug Northern New London

Partly cloudy in the Evening, then mostly cloudy with a chance of Showers with a slight chance of Thunderstorms after midnight. Patchy fog after midnight. Humid with Lows in the lower 70s. Southwest Winds around 5 Mph. Chance of rain 50 percent.

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Griswold Temperature Statistics

August Temperature

Westerly, Westerly State Airport (16.8 miles)

  • Lowest 5 August, 2026

    57.9 °F

  • Average August

    72.7 °F

  • Highest 4 August, 2026

    81 °F

Climate (2021–2026)

Westerly, Westerly State Airport (16.8 miles)

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  • Average Low 2021–2026

    44.3 °F

  • Average 2021–2026

    52.5 °F

  • Average High 2021–2026

    60.4 °F
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