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

29°F

-2°C

Humidity 100%
Wind Speed Calm
Barometer 30.26 in (1024.5 mb)
Dewpoint 29°F (-2°C)
Visibility 2.50 mi
Last update 4 Mar 10:56 pm EST
Extended Forecast for

2 Miles N South Lyme CT

  • Tonight

    Tonight: A slight chance of freezing rain after 4am. Patchy fog. Otherwise, mostly cloudy, with a steady temperature around 32. Calm wind. Chance of precipitation is 20%.

    Low: 32 °F

    Slight Chance
    Freezing Rain
    and Patchy
    Fog

  • Thursday

    Thursday: Rain likely, possibly mixed with freezing rain, becoming all rain after 7am. Patchy fog before 1pm. Otherwise, cloudy, with a high near 41. Calm wind becoming northeast around 5 mph in the afternoon. Chance of precipitation is 70%. Little or no ice accumulation expected.

    High: 41 °F

    Rain/Freezing
    Rain Likely
    and Patchy
    Fog

  • Thursday Night

    Thursday Night: Rain. Low around 33. Northeast wind around 7 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    Low: 33 °F

    Rain

  • Friday

    Friday: A 40 percent chance of rain before 1pm. Cloudy, with a high near 41. Northeast wind 5 to 7 mph, with gusts as high as 20 mph.

    High: 41 °F

    Chance Rain

  • Friday Night

    Friday Night: Cloudy, with a low around 33. Calm wind.

    Low: 33 °F

    Cloudy

  • Saturday

    Saturday: Cloudy, with a high near 50.

    High: 50 °F

    Cloudy

  • Saturday Night

    Saturday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 40.

    Low: 40 °F

    Chance
    Showers

  • Sunday

    Sunday: Partly sunny, with a high near 54.

    High: 54 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy

Detailed Forecast

Tonight
A slight chance of freezing rain after 4am. Patchy fog. Otherwise, mostly cloudy, with a steady temperature around 32. Calm wind. Chance of precipitation is 20%.
Thursday
Rain likely, possibly mixed with freezing rain, becoming all rain after 7am. Patchy fog before 1pm. Otherwise, cloudy, with a high near 41. Calm wind becoming northeast around 5 mph in the afternoon. Chance of precipitation is 70%. Little or no ice accumulation expected.
Thursday Night
Rain. Low around 33. Northeast wind around 7 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Friday
A 40 percent chance of rain before 1pm. Cloudy, with a high near 41. Northeast wind 5 to 7 mph, with gusts as high as 20 mph.
Friday Night
Cloudy, with a low around 33. Calm wind.
Saturday
Cloudy, with a high near 50.
Saturday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 40.
Sunday
Partly sunny, with a high near 54.
Sunday Night
Partly cloudy, with a low around 37.
Monday
Sunny, with a high near 55.
Monday Night
Mostly clear, with a low around 40.
Tuesday
Mostly sunny, with a high near 58.
Tuesday Night
Mostly cloudy, with a low around 44.
Wednesday
A 30 percent chance of rain. Mostly cloudy, with a high near 58.
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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:
9:52 pm EST Mar 4, 2026
Forecast Valid:
11pm EST Mar 4, 2026-6pm EDT Mar 11, 2026
 
Forecast Discussion
 
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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