Current conditions at

Groton / New London, Groton / New London Airport (KGON)

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Overcast

35°F

2°C

Humidity 89%
Wind Speed S 9 mph
Barometer 30.13 in (1020.1 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill28°F (-2°C)
Last update 17 Feb 10:56 am EST
Extended Forecast for

South Lyme CT

  • Today

    Today: Mostly cloudy, with a high near 42. Southwest wind 3 to 7 mph.

    High: 42 °F

    Mostly Cloudy

  • Tonight

    Tonight: Patchy fog after 3am.  Otherwise, mostly cloudy, with a low around 29. Calm wind.

    Low: 29 °F

    Partly Cloudy
    then Patchy
    Fog

  • Wednesday

    Wednesday: Rain.  High near 40. Light and variable wind.  Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 40 °F

    Rain Likely
    then Rain

  • Wednesday Night

    Wednesday Night: Rain likely before 1am, then a slight chance of rain and snow between 1am and 4am, then a slight chance of snow after 4am.  Cloudy, with a low around 30. Light north wind.  Chance of precipitation is 70%. Little or no snow accumulation expected.

    Low: 30 °F

    Rain Likely
    then
    Rain/Snow
    Likely

  • Thursday

    Thursday: Mostly cloudy, with a high near 40. Calm wind becoming northeast around 5 mph.

    High: 40 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

  • Friday

    Friday: Rain and snow likely, mainly after 1pm.  Mostly cloudy, with a high near 40. Chance of precipitation is 70%.

    High: 40 °F

    Rain/Snow
    Likely

  • Friday Night

    Friday Night: Rain and snow likely, mainly before 1am.  Mostly cloudy, with a low around 29. Chance of precipitation is 60%.

    Low: 29 °F

    Rain/Snow
    Likely

  • Saturday

    Saturday: A chance of rain and snow.  Mostly cloudy, with a high near 39. Chance of precipitation is 30%.

    High: 39 °F

    Chance
    Rain/Snow

Detailed Forecast

Today
Mostly cloudy, with a high near 42. Southwest wind 3 to 7 mph.
Tonight
Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 29. Calm wind.
Wednesday
Rain. High near 40. Light and variable wind. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain likely before 1am, then a slight chance of rain and snow between 1am and 4am, then a slight chance of snow after 4am. Cloudy, with a low around 30. Light north wind. Chance of precipitation is 70%. Little or no snow accumulation expected.
Thursday
Mostly cloudy, with a high near 40. Calm wind becoming northeast around 5 mph.
Thursday Night
Mostly cloudy, with a low around 27.
Friday
Rain and snow likely, mainly after 1pm. Mostly cloudy, with a high near 40. Chance of precipitation is 70%.
Friday Night
Rain and snow likely, mainly before 1am. Mostly cloudy, with a low around 29. Chance of precipitation is 60%.
Saturday
A chance of rain and snow. Mostly cloudy, with a high near 39. Chance of precipitation is 30%.
Saturday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 25.
Sunday
A 40 percent chance of snow. Partly sunny, with a high near 37.
Sunday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 24.
Monday
A 30 percent chance of snow. Partly sunny, with a high near 37.
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ABOUT THIS FORECAST

 
Point Forecast:
South Lyme CT
 41.32°N 72.29°W (Elev. 98 ft)
4:22 am EST Feb 17, 2026
11am EST Feb 17, 2026-6pm EST Feb 23, 2026
 
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Additional Resources

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Hourly Weather Forecast

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