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

40°F

4°C

Humidity 83%
Wind Speed S 8 mph
Barometer 30.01 in (1016.2 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 22 Mar 4:56 am EDT
Extended Forecast for

2 Miles SSE South Lyme CT

  • Today

    Today: Rain likely, mainly after 5pm. Mostly cloudy, with a high near 50. South wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 50 °F

    Rain Likely

  • Tonight

    Tonight: Rain, mainly before 11pm, then showers after 11pm. Low around 37. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 37 °F

    Rain

  • Monday

    Monday: A 40 percent chance of rain before 2pm. Mostly cloudy, with a high near 44. North wind 11 to 13 mph.

    High: 44 °F

    Chance Rain

  • Monday Night

    Monday Night: Partly cloudy, with a low around 30. Wind chill values between 25 and 30. Northwest wind 8 to 10 mph.

    Low: 30 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 44. Northwest wind around 7 mph becoming southwest in the afternoon.

    High: 44 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 34.

    Low: 34 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 49.

    High: 49 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain after 2am. Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy
    then Chance
    Rain

  • Thursday

    Thursday: A 30 percent chance of rain. Mostly cloudy, with a high near 50.

    High: 50 °F

    Chance Rain

Detailed Forecast

Today
Rain likely, mainly after 5pm. Mostly cloudy, with a high near 50. South wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Rain, mainly before 11pm, then showers after 11pm. Low around 37. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Monday
A 40 percent chance of rain before 2pm. Mostly cloudy, with a high near 44. North wind 11 to 13 mph.
Monday Night
Partly cloudy, with a low around 30. Wind chill values between 25 and 30. Northwest wind 8 to 10 mph.
Tuesday
Sunny, with a high near 44. Northwest wind around 7 mph becoming southwest in the afternoon.
Tuesday Night
Increasing clouds, with a low around 34.
Wednesday
Mostly cloudy, with a high near 49.
Wednesday Night
A 30 percent chance of rain after 2am. Mostly cloudy, with a low around 37.
Thursday
A 30 percent chance of rain. Mostly cloudy, with a high near 50.
Thursday Night
Rain likely. Mostly cloudy, with a low around 40. Chance of precipitation is 60%.
Friday
Partly sunny, with a high near 49.
Friday Night
Partly cloudy, with a low around 26.
Saturday
Sunny, with a high near 41.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE South Lyme CT
 41.28°N 72.3°W (Elev. 0 ft)
Last Update:
2:51 am EDT Mar 22, 2026
Forecast Valid:
5am EDT Mar 22, 2026-6pm EDT Mar 28, 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