National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Groton / New London, Groton / New London Airport (KGON)

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Fair

21°C

69°F

Humidity 96%
Wind Speed Calm
Barometer 1013.3 mb (29.92 in)
Dewpoint 20°C (68°F)
Visibility 16 km
Last update 13 Aug 11:56 pm EDT
Extended Forecast for

New London CT

  • Overnight

    Overnight: Partly cloudy, with a low around 18. Calm wind.

    Low: 18 °C

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 29. North wind 5 to 11 km/h becoming west in the afternoon.

    High: 29 °C

    Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 16. Calm wind.

    Low: 16 °C

    Slight Chance
    T-storms then
    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 28. North wind 5 to 8 km/h becoming west in the afternoon.

    High: 28 °C

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 16. Calm wind.

    Low: 16 °C

    Mostly Clear

  • Sunday

    Sunday: A 50 percent chance of showers after 2pm. Partly sunny, with a high near 27.

    High: 27 °C

    Mostly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 8pm, then showers and possibly a thunderstorm between 8pm and 2am, then showers likely after 2am. Low around 19. Chance of precipitation is 80%.

    Low: 19 °C

    Showers

  • Monday

    Monday: Showers likely before 8am. Partly sunny, with a high near 27. Chance of precipitation is 60%.

    High: 27 °C

    Showers
    Likely then
    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 17.

    Low: 17 °C

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 18. Calm wind.
Friday
Sunny, with a high near 29. North wind 5 to 11 km/h becoming west in the afternoon.
Friday Night
A 20 percent chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 16. Calm wind.
Saturday
Sunny, with a high near 28. North wind 5 to 8 km/h becoming west in the afternoon.
Saturday Night
Mostly clear, with a low around 16. Calm wind.
Sunday
A 50 percent chance of showers after 2pm. Partly sunny, with a high near 27.
Sunday Night
A chance of showers and thunderstorms before 8pm, then showers and possibly a thunderstorm between 8pm and 2am, then showers likely after 2am. Low around 19. Chance of precipitation is 80%.
Monday
Showers likely before 8am. Partly sunny, with a high near 27. Chance of precipitation is 60%.
Monday Night
Partly cloudy, with a low around 17.
Tuesday
Sunny, with a high near 27.
Tuesday Night
Mostly clear, with a low around 18.
Wednesday
Mostly sunny, with a high near 26.
Wednesday Night
Partly cloudy, with a low around 19.
Thursday
A 30 percent chance of showers. Mostly sunny, with a high near 28.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
New London CT
 41.35°N 72.11°W (Elev. 98 m)
Last Update:
8:32 pm EDT Aug 13, 2026
Forecast Valid:
12am EDT Aug 14, 2026-6pm EDT Aug 20, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation