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

42°F

6°C

Humidity 79%
Wind Speed NE 12 mph
Barometer 30.47 in (1031.8 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 2 Apr 3:56 pm EDT
Extended Forecast for

3 Miles SE South Lyme CT

  • Tonight

    Tonight: A chance of drizzle or light rain after 8pm. Patchy fog after 8pm. Otherwise, mostly cloudy, with a low around 39. East wind 7 to 15 mph. Chance of precipitation is 30%.

    Low: 39 °F

    Chance Light
    Rain and
    Patchy Fog

  • Friday

    Friday: Areas of fog before 2pm. Otherwise, mostly cloudy, with a high near 54. East wind 5 to 9 mph becoming southwest in the afternoon.

    High: 54 °F

    Areas Fog

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 49. Southwest wind 7 to 10 mph.

    Low: 49 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers after 2pm. Partly sunny, with a high near 60. Northwest wind 5 to 11 mph becoming east in the afternoon.

    High: 60 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: A 40 percent chance of showers. Cloudy, with a low around 41. East wind 9 to 15 mph.

    Low: 41 °F

    Chance
    Showers

  • Sunday

    Sunday: Showers. High near 56. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 56 °F

    Showers
    Likely then
    Showers

  • Sunday Night

    Sunday Night: A 30 percent chance of showers before 8pm. Cloudy during the early evening, then gradual clearing, with a low around 40.

    Low: 40 °F

    Chance
    Showers then
    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 50.

    High: 50 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of drizzle or light rain after 8pm. Patchy fog after 8pm. Otherwise, mostly cloudy, with a low around 39. East wind 7 to 15 mph. Chance of precipitation is 30%.
Friday
Areas of fog before 2pm. Otherwise, mostly cloudy, with a high near 54. East wind 5 to 9 mph becoming southwest in the afternoon.
Friday Night
Mostly cloudy, with a low around 49. Southwest wind 7 to 10 mph.
Saturday
A 20 percent chance of showers after 2pm. Partly sunny, with a high near 60. Northwest wind 5 to 11 mph becoming east in the afternoon.
Saturday Night
A 40 percent chance of showers. Cloudy, with a low around 41. East wind 9 to 15 mph.
Sunday
Showers. High near 56. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
A 30 percent chance of showers before 8pm. Cloudy during the early evening, then gradual clearing, with a low around 40.
Monday
Mostly sunny, with a high near 50.
Monday Night
Mostly clear, with a low around 38.
Tuesday
Mostly sunny, with a high near 48.
Tuesday Night
Partly cloudy, with a low around 32.
Wednesday
Sunny, with a high near 45.
Wednesday Night
Mostly clear, with a low around 35.
Thursday
Mostly sunny, with a high near 49.
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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:
2:27 pm EDT Apr 2, 2026
Forecast Valid:
4pm EDT Apr 2, 2026-6pm EDT Apr 9, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation