Niantic River Mouth Weather Forecast

    • 54
    • 74

    Partly Sunny

    • 49
    • 72

    Chance Rain Showers

    • 46
    • 61

    Rain Showers Likely

    • 36
    • 58

    Rain Showers Likely

    • 32
    • 49

    Mostly Sunny

    • 41
    • 51

    Partly Sunny

Today 16 Apr Southern New London

Mostly sunny. Highs in the mid 70s. Southwest Winds 5 to 10 Mph.

Tonight 16 Apr Southern New London

Mostly cloudy. A slight chance of Showers after midnight. Lows in the mid 50s. Southwest Winds 5 to 10 Mph. Chance of rain 20 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Niantic River Mouth Temperature Statistics

April Temperature

Groton / New London, Groton / New London Airport (6.2 miles)

  • Lowest 9 April, 2026

    28 °F

  • Average April

    45.2 °F

  • Highest 4 April, 2026

    66.9 °F

Climate (2021–Present)

Groton / New London, Groton / New London Airport (6.2 miles)

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

  • Average Low 2021–2026

    45.3 °F

  • Average 2021–2026

    53.2 °F

  • Average High 2021–2026

    60.7 °F
Get WillyWeather+ to remove ads