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

39°F

4°C

Humidity 46%
Wind Speed NW 13 mph
Barometer 30.36 in (1027.9 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 29 Nov 9:56 am EST
Extended Forecast for

3 Miles ESE South Lyme CT

  • Today

    Today: Sunny, with a high near 44. Northwest wind 7 to 11 mph, with gusts as high as 21 mph.

    High: 44 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 30. Light and variable wind.

    Low: 30 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Rain, mainly after 1pm. High near 53. South wind 7 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 53 °F

    Chance Rain
    then Rain

  • Sunday Night

    Sunday Night: Rain likely before 1am. Cloudy during the early evening, then gradual clearing, with a low around 33. Southwest wind 11 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 33 °F

    Rain Likely

  • Monday

    Monday: Sunny, with a high near 42. Northwest wind 10 to 14 mph.

    High: 42 °F

    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 26.

    Low: 26 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Rain, mainly after 1pm. High near 46. Chance of precipitation is 90%.

    High: 46 °F

    Chance Rain
    then Rain

  • Tuesday Night

    Tuesday Night: Rain likely, mainly before 1am. Mostly cloudy, with a low around 30. Chance of precipitation is 70%.

    Low: 30 °F

    Rain Likely

  • Wednesday

    Wednesday: Mostly sunny, with a high near 41.

    High: 41 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 44. Northwest wind 7 to 11 mph, with gusts as high as 21 mph.
Tonight
Increasing clouds, with a low around 30. Light and variable wind.
Sunday
Rain, mainly after 1pm. High near 53. South wind 7 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Rain likely before 1am. Cloudy during the early evening, then gradual clearing, with a low around 33. Southwest wind 11 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Sunny, with a high near 42. Northwest wind 10 to 14 mph.
Monday Night
Increasing clouds, with a low around 26.
Tuesday
Rain, mainly after 1pm. High near 46. Chance of precipitation is 90%.
Tuesday Night
Rain likely, mainly before 1am. Mostly cloudy, with a low around 30. Chance of precipitation is 70%.
Wednesday
Mostly sunny, with a high near 41.
Wednesday Night
Partly cloudy, with a low around 29.
Thursday
Partly sunny, with a high near 41.
Thursday Night
Partly cloudy, with a low around 19.
Friday
Mostly sunny, with a high near 37.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE South Lyme CT
 41.3°N 72.27°W (Elev. 75 ft)
Last Update:
5:02 am EST Nov 29, 2025
Forecast Valid:
10am EST Nov 29, 2025-6pm EST Dec 5, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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