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

72°F

22°C

Humidity 59%
Wind Speed NW 13 mph
Barometer 29.72 in (1006.5 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 12 Oct 2:56 pm EDT
Extended Forecast for

3 Miles ESE South Lyme CT

  • Tonight

    Tonight: Patchy fog after 8pm. Otherwise, mostly clear, with a low around 56. Northwest wind around 6 mph becoming light and variable after midnight.

    Low: 56 °F

    Patchy Fog

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 67. East wind 9 to 11 mph becoming south in the afternoon.

    High: 67 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers before 11pm. Partly cloudy, with a low around 63. Southwest wind 7 to 13 mph.

    Low: 63 °F

    Slight Chance
    Showers then
    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 75. West wind 9 to 11 mph.

    High: 75 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 55. Northwest wind 6 to 8 mph.

    Low: 55 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers after 2am. Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers, mainly after 8am. High near 67. Chance of precipitation is 90%.

    High: 67 °F

    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers before 2am. Mostly cloudy, with a low around 46. Breezy.

    Low: 46 °F

    Chance
    Showers and
    Breezy

Detailed Forecast

Tonight
Patchy fog after 8pm. Otherwise, mostly clear, with a low around 56. Northwest wind around 6 mph becoming light and variable after midnight.
Tuesday
Mostly cloudy, with a high near 67. East wind 9 to 11 mph becoming south in the afternoon.
Tuesday Night
A 20 percent chance of showers before 11pm. Partly cloudy, with a low around 63. Southwest wind 7 to 13 mph.
Wednesday
Mostly sunny, with a high near 75. West wind 9 to 11 mph.
Wednesday Night
Partly cloudy, with a low around 55. Northwest wind 6 to 8 mph.
Thursday
Sunny, with a high near 64.
Thursday Night
A 30 percent chance of showers after 2am. Partly cloudy, with a low around 50.
Friday
Showers, mainly after 8am. High near 67. Chance of precipitation is 90%.
Friday Night
A 30 percent chance of showers before 2am. Mostly cloudy, with a low around 46. Breezy.
Saturday
Mostly sunny, with a high near 54. Windy.
Saturday Night
Mostly clear, with a low around 39.
Sunday
Sunny, with a high near 56.
Sunday Night
Mostly clear, with a low around 44.
Monday
Sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE South Lyme CT
 41.3°N 72.24°W (Elev. 0 ft)
Last Update:
2:47 pm EDT Oct 12, 2026
Forecast Valid:
3pm EDT Oct 12, 2026-6pm EDT Oct 19, 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