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

56°F

13°C

Humidity 97%
Wind Speed SW 5 mph
Barometer 29.72 in (1006.3 mb)
Dewpoint 55°F (13°C)
Visibility 1.00 mi
Last update 26 Nov 1:56 pm EST
Extended Forecast for

3 Miles ESE South Lyme CT

  • This Afternoon

    This Afternoon: A 20 percent chance of showers. Patchy fog. Otherwise, cloudy, with a high near 59. Southwest wind around 8 mph.

    High: 59 °F

    Slight Chance
    Showers and
    Patchy Fog

  • Tonight

    Tonight: A 20 percent chance of showers before 10pm. Patchy fog before 10pm. Otherwise, cloudy during the early evening, then gradual clearing, with a low around 37. West wind 5 to 10 mph increasing to 13 to 18 mph after midnight. Winds could gust as high as 31 mph.

    Low: 37 °F

    Slight Chance
    Showers and
    Patchy Fog
    then Mostly
    Clear

  • Thanksgiving Day

    Thanksgiving Day: Sunny, with a high near 46. West wind around 16 mph, with gusts as high as 29 mph.

    High: 46 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 31. Wind chill values between 20 and 25. West wind 13 to 15 mph, with gusts as high as 32 mph.

    Low: 31 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 43. Breezy, with a west wind 15 to 20 mph, with gusts as high as 40 mph.

    High: 43 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 31.

    Low: 31 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 43.

    High: 43 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 29.

    Low: 29 °F

    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers after 1pm. Cloudy, with a high near 52.

    High: 52 °F

    Cloudy then
    Chance
    Showers

Detailed Forecast

This Afternoon
A 20 percent chance of showers. Patchy fog. Otherwise, cloudy, with a high near 59. Southwest wind around 8 mph.
Tonight
A 20 percent chance of showers before 10pm. Patchy fog before 10pm. Otherwise, cloudy during the early evening, then gradual clearing, with a low around 37. West wind 5 to 10 mph increasing to 13 to 18 mph after midnight. Winds could gust as high as 31 mph.
Thanksgiving Day
Sunny, with a high near 46. West wind around 16 mph, with gusts as high as 29 mph.
Thursday Night
Mostly clear, with a low around 31. Wind chill values between 20 and 25. West wind 13 to 15 mph, with gusts as high as 32 mph.
Friday
Mostly sunny, with a high near 43. Breezy, with a west wind 15 to 20 mph, with gusts as high as 40 mph.
Friday Night
Mostly clear, with a low around 31.
Saturday
Sunny, with a high near 43.
Saturday Night
Partly cloudy, with a low around 29.
Sunday
A 30 percent chance of showers after 1pm. Cloudy, with a high near 52.
Sunday Night
A 50 percent chance of showers. Cloudy, with a low around 37.
Monday
Partly sunny, with a high near 46.
Monday Night
A 30 percent chance of light snow. Mostly cloudy, with a low around 29.
Tuesday
A chance of rain and snow. Mostly cloudy, with a high near 41. Chance of precipitation is 50%.
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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:
2:41 pm EST Nov 26, 2025
Forecast Valid:
2pm EST Nov 26, 2025-6pm EST Dec 2, 2025
 
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Additional Resources

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Chance of Precipitation