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

64°F

18°C

Humidity 96%
Wind Speed Calm
Barometer 30.07 in (1018.3 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 26 Aug 11:56 pm EDT
Extended Forecast for

New London CT

  • Overnight

    Overnight: Mostly cloudy, with a low around 66. Calm wind.

    Low: 66 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers after 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 80. South wind 5 to 11 mph.

    High: 80 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely before 5am, then a chance of showers. Mostly cloudy, with a low around 68. South wind around 6 mph becoming calm after midnight. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 68 °F

    Showers
    Likely

  • Friday

    Friday: A slight chance of showers, with thunderstorms also possible after 11am. Mostly sunny, with a high near 83. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 20%.

    High: 83 °F

    Slight Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 62. Light and variable wind.

    Low: 62 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 67.

    Low: 67 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 66. Calm wind.
Thursday
A 20 percent chance of showers after 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 80. South wind 5 to 11 mph.
Thursday Night
Showers and thunderstorms likely before 5am, then a chance of showers. Mostly cloudy, with a low around 68. South wind around 6 mph becoming calm after midnight. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A slight chance of showers, with thunderstorms also possible after 11am. Mostly sunny, with a high near 83. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around 62. Light and variable wind.
Saturday
Sunny, with a high near 78.
Saturday Night
Mostly clear, with a low around 61.
Sunday
Sunny, with a high near 81.
Sunday Night
Partly cloudy, with a low around 67.
Monday
Mostly sunny, with a high near 82.
Monday Night
Partly cloudy, with a low around 66.
Tuesday
Partly sunny, with a high near 81.
Tuesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 66.
Wednesday
A 30 percent chance of showers. Partly sunny, with a high near 80.
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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 ft)
Last Update:
2:53 pm EDT Aug 26, 2026
Forecast Valid:
12am EDT Aug 27, 2026-6pm EDT Sep 2, 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