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

48°F

9°C

Humidity 66%
Wind Speed W 7 mph
Barometer 29.93 in (1013.5 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 10 Nov 1:56 am EST
Extended Forecast for

3 Miles SE South Lyme CT

  • Overnight

    Overnight: Clear, with a steady temperature around 45. West wind around 9 mph.

    Low: 45 °F

    Clear

  • Tuesday

    Tuesday: Partly sunny, then gradually becoming sunny, with a high near 59. West wind 9 to 14 mph.

    High: 59 °F

    Becoming
    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 46. West wind 8 to 13 mph.

    Low: 46 °F

    Clear

  • Veterans Day

    Veterans Day: Increasing clouds, with a high near 58. Northwest wind 5 to 9 mph.

    High: 58 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 45. Calm wind becoming east around 6 mph after midnight.

    Low: 45 °F

    Mostly Cloudy

  • Thursday

    Thursday: Rain likely after 1pm. Mostly cloudy, with a high near 58. Chance of precipitation is 60%.

    High: 58 °F

    Mostly Cloudy
    then Rain
    Likely

  • Thursday Night

    Thursday Night: Rain. Low around 43. Breezy. Chance of precipitation is 90%.

    Low: 43 °F

    Rain and
    Breezy

  • Friday

    Friday: Rain. High near 50. Breezy. Chance of precipitation is 80%.

    High: 50 °F

    Rain and
    Breezy

  • Friday Night

    Friday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 36.

    Low: 36 °F

    Chance Rain

Detailed Forecast

Overnight
Clear, with a steady temperature around 45. West wind around 9 mph.
Tuesday
Partly sunny, then gradually becoming sunny, with a high near 59. West wind 9 to 14 mph.
Tuesday Night
Clear, with a low around 46. West wind 8 to 13 mph.
Veterans Day
Increasing clouds, with a high near 58. Northwest wind 5 to 9 mph.
Wednesday Night
Mostly cloudy, with a low around 45. Calm wind becoming east around 6 mph after midnight.
Thursday
Rain likely after 1pm. Mostly cloudy, with a high near 58. Chance of precipitation is 60%.
Thursday Night
Rain. Low around 43. Breezy. Chance of precipitation is 90%.
Friday
Rain. High near 50. Breezy. Chance of precipitation is 80%.
Friday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 36.
Saturday
Mostly cloudy, with a high near 48.
Saturday Night
Mostly cloudy, with a low around 36.
Sunday
Mostly sunny, with a high near 52.
Sunday Night
Partly cloudy, with a low around 35.
Monday
Sunny, with a high near 53.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE South Lyme CT
 41.3°N 72.24°W (Elev. 0 ft)
Last Update:
1:34 am EST Nov 10, 2026
Forecast Valid:
2am EST Nov 10, 2026-6pm EST Nov 16, 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