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.

Fog/Mist

35°F

2°C

Humidity 93%
Wind Speed N 5 mph
Barometer 30.37 in (1028.4 mb)
Dewpoint 33°F (1°C)
Visibility 5.00 mi
Wind Chill31°F (-1°C)
Last update 7 Mar 12:56 am EST
Extended Forecast for

3 Miles SE South Lyme CT

  • Overnight

    Overnight: Patchy fog. Otherwise, cloudy, with a low around 35. Calm wind.

    Low: 35 °F

    Patchy Fog

  • Saturday

    Saturday: Areas of drizzle before 1pm. Patchy fog. Otherwise, cloudy, with a high near 42. Calm wind becoming southwest 5 to 8 mph in the morning.

    High: 42 °F

    Areas Drizzle
    and Patchy
    Fog

  • Saturday Night

    Saturday Night: A 50 percent chance of showers after 10pm. Areas of fog before 4am. Otherwise, cloudy, with a temperature rising to around 45 by 2am. Southwest wind 8 to 11 mph.

    Low: 42 °F⇑

    Chance
    Showers and
    Areas Fog

  • Sunday

    Sunday: A 30 percent chance of rain. Cloudy, with a high near 54. Southwest wind 7 to 10 mph.

    High: 54 °F

    Chance Rain

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 36. West wind 3 to 6 mph.

    Low: 36 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 51.

    High: 51 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 55.

    High: 55 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Patchy fog. Otherwise, cloudy, with a low around 35. Calm wind.
Saturday
Areas of drizzle before 1pm. Patchy fog. Otherwise, cloudy, with a high near 42. Calm wind becoming southwest 5 to 8 mph in the morning.
Saturday Night
A 50 percent chance of showers after 10pm. Areas of fog before 4am. Otherwise, cloudy, with a temperature rising to around 45 by 2am. Southwest wind 8 to 11 mph.
Sunday
A 30 percent chance of rain. Cloudy, with a high near 54. Southwest wind 7 to 10 mph.
Sunday Night
Mostly clear, with a low around 36. West wind 3 to 6 mph.
Monday
Sunny, with a high near 51.
Monday Night
Partly cloudy, with a low around 41.
Tuesday
Mostly sunny, with a high near 55.
Tuesday Night
Mostly cloudy, with a low around 41.
Wednesday
A 40 percent chance of rain. Cloudy, with a high near 51.
Wednesday Night
Rain likely. Cloudy, with a low around 44. Chance of precipitation is 60%.
Thursday
A 50 percent chance of rain. Mostly cloudy, with a high near 50.
Thursday Night
Partly cloudy, with a low around 30.
Friday
Partly sunny, with a high near 42.
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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:
1:06 am EST Mar 7, 2026
Forecast Valid:
1am EST Mar 7, 2026-6pm EDT Mar 13, 2026
 
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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