Thames River - Horton Cove Weather Forecast

    • 57
    • 79

    Slight Chance Rain Showers

    • 50
    • 82

    Mostly Sunny

    • 47
    • 72

    Mostly Sunny

    • 49
    • 70

    Partly Sunny

    • 57
    • 74

    Partly Sunny

    • 60
    • 80

    Partly Sunny

Today 18 Sep Northern New London

Patchy fog this morning. Mostly cloudy with a slight chance of Showers this Morning, then mostly sunny this afternoon. Highs in the upper 70s. North Winds around 5 Mph, becoming west this afternoon. Chance of rain 20 percent.

Tonight 18 Sep Northern New London

Mostly clear. Lows in the upper 50s. West Winds around 5 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Thames River - Horton Cove Temperature Statistics

September Temperature

Groton / New London, Groton / New London Airport (8.1 miles)

  • Lowest 9 September, 2025

    48 °F

  • Average September

    61.9 °F

  • Highest 6 September, 2025

    75.9 °F

Climate (2020–Present)

Groton / New London, Groton / New London Airport (8.1 miles)

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

  • Average Low 2020–2025

    45.7 °F

  • Average 2020–2025

    53.6 °F

  • Average High 2020–2025

    61.1 °F
Get WillyWeather+ to remove ads