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.

Overcast

74°F

23°C

Humidity 76%
Wind Speed S 9 mph
Barometer 30.03 in (1016.7 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 16 Aug 5:56 pm EDT
Extended Forecast for

New London CT

  • Tonight

    Tonight: Showers, mainly after 2am. Low around 68. South wind 10 to 13 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 68 °F

    Chance
    Showers then
    Showers

  • Monday

    Monday: Showers and possibly a thunderstorm before 2pm, then a slight chance of showers. High near 75. Southeast wind 8 to 14 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 75 °F

    Showers

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 68. North wind 3 to 5 mph.

    Low: 68 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 82. North wind 5 to 7 mph becoming calm.

    High: 82 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 67. Light and variable wind.

    Low: 67 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Wednesday Night

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

    Low: 67 °F

    Partly Cloudy

  • Thursday

    Thursday: A 50 percent chance of showers. Partly sunny, with a high near 81.

    High: 81 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

Detailed Forecast

Tonight
Showers, mainly after 2am. Low around 68. South wind 10 to 13 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Showers and possibly a thunderstorm before 2pm, then a slight chance of showers. High near 75. Southeast wind 8 to 14 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
Mostly cloudy, with a low around 68. North wind 3 to 5 mph.
Tuesday
Mostly sunny, with a high near 82. North wind 5 to 7 mph becoming calm.
Tuesday Night
Partly cloudy, with a low around 67. Light and variable wind.
Wednesday
Sunny, with a high near 83.
Wednesday Night
Partly cloudy, with a low around 67.
Thursday
A 50 percent chance of showers. Partly sunny, with a high near 81.
Thursday Night
Partly cloudy, with a low around 60.
Friday
Mostly sunny, with a high near 80.
Friday Night
Partly cloudy, with a low around 61.
Saturday
Partly sunny, with a high near 78.
Saturday Night
Mostly cloudy, with a low around 61.
Sunday
A 30 percent chance of showers. Partly sunny, with a high near 79.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
New London CT
 41.34°N 72.08°W (Elev. 36 ft)
Last Update:
2:20 pm EDT Aug 16, 2026
Forecast Valid:
6pm EDT Aug 16, 2026-6pm EDT Aug 23, 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