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

55°F

13°C

Humidity 83%
Wind Speed NA
Barometer 30.02 in (1016.5 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 13 Apr 12:56 pm EDT
Extended Forecast for

2 Miles SSE South Lyme CT

  • This Afternoon

    This Afternoon: Mostly cloudy, with a steady temperature around 55. Southwest wind around 18 mph, with gusts as high as 30 mph.

    High: 55 °F

    Mostly Cloudy

  • Tonight

    Tonight: Partly cloudy, with a low around 51. West wind 5 to 13 mph.

    Low: 51 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 68. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 68 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers before 2am. Mostly cloudy, with a low around 52. Southwest wind 5 to 7 mph.

    Low: 52 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers after 2pm. Partly sunny, with a high near 71. Southwest wind 5 to 9 mph.

    High: 71 °F

    Mostly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers before 2am. Mostly cloudy, with a low around 55.

    Low: 55 °F

    Chance
    Showers

  • Thursday

    Thursday: Mostly cloudy, with a high near 68.

    High: 68 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 53.

    Low: 53 °F

    Mostly Cloudy

  • Friday

    Friday: A 30 percent chance of showers after 2pm. Partly sunny, with a high near 70.

    High: 70 °F

    Partly Sunny
    then Chance
    Showers

Detailed Forecast

This Afternoon
Mostly cloudy, with a steady temperature around 55. Southwest wind around 18 mph, with gusts as high as 30 mph.
Tonight
Partly cloudy, with a low around 51. West wind 5 to 13 mph.
Tuesday
Mostly sunny, with a high near 68. Calm wind becoming south 5 to 8 mph in the afternoon.
Tuesday Night
A 20 percent chance of showers before 2am. Mostly cloudy, with a low around 52. Southwest wind 5 to 7 mph.
Wednesday
A 30 percent chance of showers after 2pm. Partly sunny, with a high near 71. Southwest wind 5 to 9 mph.
Wednesday Night
A 40 percent chance of showers before 2am. Mostly cloudy, with a low around 55.
Thursday
Mostly cloudy, with a high near 68.
Thursday Night
Mostly cloudy, with a low around 53.
Friday
A 30 percent chance of showers after 2pm. Partly sunny, with a high near 70.
Friday Night
A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 51.
Saturday
Mostly sunny, with a high near 63.
Saturday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 50.
Sunday
A 40 percent chance of showers. Mostly cloudy, with a high near 63.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE South Lyme CT
 41.28°N 72.3°W (Elev. 0 ft)
Last Update:
9:09 am EDT Apr 13, 2026
Forecast Valid:
1pm EDT Apr 13, 2026-6pm EDT Apr 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