Griswold Weather Forecast

    • 59
    • 73

    Rain Showers Likely

    • 56
    • 78

    Rain Showers Likely

    • 46
    • 79

    Mostly Sunny

    • 45
    • 70

    Mostly Sunny

    • 47
    • 70

    Partly Sunny

    • 53
    • 75

    Partly Sunny

Today 17 Sep Northern New London

Mostly cloudy with a 20 percent chance of Showers. Highs in the lower 70s. East Winds 5 to 10 Mph.

Tonight 17 Sep Northern New London

Mostly cloudy with a 50 percent chance of Showers. Lows in the upper 50s. Northeast Winds around 5 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Griswold Temperature Statistics

September Temperature

Westerly, Westerly State Airport (16.8 miles)

  • Lowest 4 September, 2025

    48 °F

  • Average September

    63.7 °F

  • Highest 6 September, 2025

    78.1 °F

Climate (2020–Present)

Westerly, Westerly State Airport (16.8 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    44.3 °F

  • Average 2020–2025

    52.6 °F

  • Average High 2020–2025

    60.4 °F
Get WillyWeather+ to remove ads