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.

Fair

22°F

-6°C

Humidity 40%
Wind Speed NW 15 G 25 mph
Barometer 29.59 in (1001.8 mb)
Dewpoint 1°F (-17°C)
Visibility 10.00 mi
Wind Chill9°F (-13°C)
Last update 16 Jan 4:56 am EST
Extended Forecast for

2 Miles N South Lyme CT

  • Today

    Today: Sunny, with a high near 34. Wind chill values between 10 and 20. West wind 8 to 14 mph, with gusts as high as 31 mph.

    High: 34 °F

    Sunny

  • Tonight

    Tonight: A 20 percent chance of snow after 1am. Mostly cloudy, with a steady temperature around 30. Light southwest wind.

    Low: 30 °F

    Partly Cloudy
    then Slight
    Chance Snow

  • Saturday

    Saturday: Rain likely, possibly mixed with snow, mainly after 1pm. Mostly cloudy, with a high near 40. Southwest wind 3 to 8 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 40 °F

    Chance
    Rain/Snow
    then
    Rain/Snow
    Likely

  • Saturday Night

    Saturday Night: A slight chance of snow before 7pm, then a slight chance of snow after 1am. Mostly cloudy, with a low around 30. Light west wind. Chance of precipitation is 20%.

    Low: 30 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Sunday

    Sunday: A 30 percent chance of snow, mainly after 1pm. Cloudy, with a high near 36. Calm wind becoming west around 6 mph in the morning.

    High: 36 °F

    Chance Snow

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 20.

    Low: 20 °F

    Mostly Cloudy

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 34.

    High: 34 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 15.

    Low: 15 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 23.

    High: 23 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 34. Wind chill values between 10 and 20. West wind 8 to 14 mph, with gusts as high as 31 mph.
Tonight
A 20 percent chance of snow after 1am. Mostly cloudy, with a steady temperature around 30. Light southwest wind.
Saturday
Rain likely, possibly mixed with snow, mainly after 1pm. Mostly cloudy, with a high near 40. Southwest wind 3 to 8 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Saturday Night
A slight chance of snow before 7pm, then a slight chance of snow after 1am. Mostly cloudy, with a low around 30. Light west wind. Chance of precipitation is 20%.
Sunday
A 30 percent chance of snow, mainly after 1pm. Cloudy, with a high near 36. Calm wind becoming west around 6 mph in the morning.
Sunday Night
Mostly cloudy, with a low around 20.
M.L.King Day
Sunny, with a high near 34.
Monday Night
Mostly clear, with a low around 15.
Tuesday
Sunny, with a high near 23.
Tuesday Night
Mostly clear, with a low around 12.
Wednesday
Mostly sunny, with a high near 30.
Wednesday Night
Mostly cloudy, with a low around 21.
Thursday
Partly sunny, with a high near 37.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles N South Lyme CT
 41.35°N 72.29°W (Elev. 98 ft)
Last Update:
1:17 am EST Jan 16, 2026
Forecast Valid:
5am EST Jan 16, 2026-6pm EST Jan 22, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation