National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

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

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Fair

45°F

7°C

Humidity 52%
Wind Speed S 13 mph
Barometer 30.51 in (1033.0 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 29 Mar 1:56 pm EDT
Extended Forecast for

3 Miles SE South Lyme CT

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 45. Southwest wind around 14 mph.

    High: 45 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 41. Southwest wind around 14 mph.

    Low: 41 °F

    Mostly Cloudy

  • Monday

    Monday: A 20 percent chance of showers after 2pm. Partly sunny, with a high near 54. Southwest wind 13 to 17 mph.

    High: 54 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: A slight chance of showers before 8pm, then a slight chance of showers after 2am. Mostly cloudy, with a low around 46. Southwest wind 7 to 13 mph. Chance of precipitation is 20%.

    Low: 46 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: A 30 percent chance of showers, mainly between 8am and 2pm. Partly sunny, with a high near 57. Southwest wind 8 to 16 mph.

    High: 57 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 50. Breezy.

    Low: 50 °F

    Mostly Cloudy
    and Breezy

  • Wednesday

    Wednesday: A 40 percent chance of showers after 2pm. Mostly sunny, with a high near 61. Breezy.

    High: 61 °F

    Mostly Sunny
    and Breezy
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: Rain likely. Mostly cloudy, with a low around 43. Chance of precipitation is 70%.

    Low: 43 °F

    Rain Likely

  • Thursday

    Thursday: A 50 percent chance of rain. Mostly cloudy, with a high near 47.

    High: 47 °F

    Chance Rain

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 45. Southwest wind around 14 mph.
Tonight
Mostly cloudy, with a low around 41. Southwest wind around 14 mph.
Monday
A 20 percent chance of showers after 2pm. Partly sunny, with a high near 54. Southwest wind 13 to 17 mph.
Monday Night
A slight chance of showers before 8pm, then a slight chance of showers after 2am. Mostly cloudy, with a low around 46. Southwest wind 7 to 13 mph. Chance of precipitation is 20%.
Tuesday
A 30 percent chance of showers, mainly between 8am and 2pm. Partly sunny, with a high near 57. Southwest wind 8 to 16 mph.
Tuesday Night
Mostly cloudy, with a low around 50. Breezy.
Wednesday
A 40 percent chance of showers after 2pm. Mostly sunny, with a high near 61. Breezy.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 43. Chance of precipitation is 70%.
Thursday
A 50 percent chance of rain. Mostly cloudy, with a high near 47.
Thursday Night
A 50 percent chance of rain. Cloudy, with a low around 38.
Friday
Rain likely. Cloudy, with a high near 46. Chance of precipitation is 60%.
Friday Night
Rain likely. Cloudy, with a low around 41. Chance of precipitation is 60%.
Saturday
A 40 percent chance of rain. Cloudy, with a high near 48.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE South Lyme CT
 41.3°N 72.24°W (Elev. 0 ft)
Last Update:
2:25 am EDT Mar 29, 2026
Forecast Valid:
2pm EDT Mar 29, 2026-6pm EDT Apr 4, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation