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

53°F

12°C

Humidity 86%
Wind Speed SW 9 mph
Barometer 30.06 in (1017.7 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 13 Apr 11:56 am EDT
Extended Forecast for

3 Miles SE South Lyme CT

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 56. Breezy, with a southwest wind 18 to 20 mph, with gusts as high as 30 mph.

    High: 56 °F

    Mostly Cloudy
    and Breezy

  • Tonight

    Tonight: Partly cloudy, with a steady temperature around 55. West wind 6 to 14 mph.

    Low: 55 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 66. Calm wind becoming south 5 to 9 mph in the afternoon.

    High: 66 °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 8 mph.

    Low: 52 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers after 2pm. Mostly sunny, with a high near 69. Light southwest wind increasing to 5 to 9 mph in the morning.

    High: 69 °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 67.

    High: 67 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Cloudy

  • Friday

    Friday: A 30 percent chance of showers after 2pm. Partly sunny, with a high near 68.

    High: 68 °F

    Partly Sunny
    then Chance
    Showers

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 56. Breezy, with a southwest wind 18 to 20 mph, with gusts as high as 30 mph.
Tonight
Partly cloudy, with a steady temperature around 55. West wind 6 to 14 mph.
Tuesday
Mostly sunny, with a high near 66. Calm wind becoming south 5 to 9 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 8 mph.
Wednesday
A 30 percent chance of showers after 2pm. Mostly sunny, with a high near 69. Light southwest wind increasing to 5 to 9 mph in the morning.
Wednesday Night
A 40 percent chance of showers before 2am. Mostly cloudy, with a low around 55.
Thursday
Mostly cloudy, with a high near 67.
Thursday Night
Mostly cloudy, with a low around 52.
Friday
A 30 percent chance of showers after 2pm. Partly sunny, with a high near 68.
Friday Night
A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 52.
Saturday
Mostly sunny, with a high near 61.
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 61.
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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:
9:09 am EDT Apr 13, 2026
Forecast Valid:
12pm EDT Apr 13, 2026-6pm EDT Apr 19, 2026
 
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