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.

A Few Clouds

62°F

17°C

Humidity 93%
Wind Speed SW 5 mph
Barometer 30.06 in (1017.9 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 13 Sep 11:56 pm EDT
Extended Forecast for

3 Miles ESE South Lyme CT

  • Overnight

    Overnight: Partly cloudy, with a low around 60. Light southwest wind.

    Low: 60 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers after 2pm. Mostly sunny, with a high near 76. Southwest wind 3 to 6 mph.

    High: 76 °F

    Sunny then
    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: Patchy fog after 3am. Otherwise, partly cloudy, with a low around 59. Calm wind.

    Low: 59 °F

    Partly Cloudy
    then Patchy
    Fog

  • Monday

    Monday: Patchy fog before 8am. Otherwise, sunny, with a high near 76. Northeast wind around 6 mph becoming southeast in the afternoon.

    High: 76 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 59. Light southeast wind.

    Low: 59 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 75.

    High: 75 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 59.

    Low: 59 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 60. Light southwest wind.
Sunday
A 20 percent chance of showers after 2pm. Mostly sunny, with a high near 76. Southwest wind 3 to 6 mph.
Sunday Night
Patchy fog after 3am. Otherwise, partly cloudy, with a low around 59. Calm wind.
Monday
Patchy fog before 8am. Otherwise, sunny, with a high near 76. Northeast wind around 6 mph becoming southeast in the afternoon.
Monday Night
Partly cloudy, with a low around 59. Light southeast wind.
Tuesday
Mostly sunny, with a high near 76.
Tuesday Night
Partly cloudy, with a low around 58.
Wednesday
Partly sunny, with a high near 75.
Wednesday Night
Mostly cloudy, with a low around 59.
Thursday
Partly sunny, with a high near 75.
Thursday Night
Partly cloudy, with a low around 60.
Friday
Mostly sunny, with a high near 78.
Friday Night
Partly cloudy, with a low around 57.
Saturday
Mostly sunny, with a high near 72.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE South Lyme CT
 41.3°N 72.27°W (Elev. 75 ft)
Last Update:
2:01 pm EDT Sep 13, 2025
Forecast Valid:
12am EDT Sep 14, 2025-6pm EDT Sep 20, 2025
 
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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