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

42°F

6°C

Humidity 85%
Wind Speed S 10 mph
Barometer 30.30 in (1025.9 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 30 Mar 3:56 am EDT
Extended Forecast for

2 Miles SSE South Lyme CT

  • Today

    Today: Mostly cloudy, with a high near 56. Southwest wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 56 °F

    Mostly Cloudy

  • Tonight

    Tonight: A 50 percent chance of showers, mainly after 2am. Mostly cloudy, with a low around 46. Southwest wind 8 to 11 mph, with gusts as high as 24 mph.

    Low: 46 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Tuesday

    Tuesday: A 40 percent chance of showers before 2pm. Mostly cloudy, with a high near 60. South wind 8 to 13 mph.

    High: 60 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 49. Southwest wind 11 to 16 mph, with gusts as high as 26 mph.

    Low: 49 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Showers likely after 2pm. Partly sunny, with a high near 64. Southwest wind 13 to 16 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 64 °F

    Partly Sunny
    then Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely, mainly before 2am. Mostly cloudy, with a low around 43. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 43 °F

    Showers
    Likely

  • Thursday

    Thursday: A 40 percent chance of showers. Mostly cloudy, with a high near 48.

    High: 48 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 30 percent chance of rain. Cloudy, with a low around 40.

    Low: 40 °F

    Chance Rain

  • Friday

    Friday: A 30 percent chance of rain. Cloudy, with a high near 56.

    High: 56 °F

    Chance Rain

Detailed Forecast

Today
Mostly cloudy, with a high near 56. Southwest wind 10 to 15 mph, with gusts as high as 30 mph.
Tonight
A 50 percent chance of showers, mainly after 2am. Mostly cloudy, with a low around 46. Southwest wind 8 to 11 mph, with gusts as high as 24 mph.
Tuesday
A 40 percent chance of showers before 2pm. Mostly cloudy, with a high near 60. South wind 8 to 13 mph.
Tuesday Night
Mostly cloudy, with a low around 49. Southwest wind 11 to 16 mph, with gusts as high as 26 mph.
Wednesday
Showers likely after 2pm. Partly sunny, with a high near 64. Southwest wind 13 to 16 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Showers likely, mainly before 2am. Mostly cloudy, with a low around 43. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
A 40 percent chance of showers. Mostly cloudy, with a high near 48.
Thursday Night
A 30 percent chance of rain. Cloudy, with a low around 40.
Friday
A 30 percent chance of rain. Cloudy, with a high near 56.
Friday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 47.
Saturday
A 30 percent chance of rain. Mostly cloudy, with a high near 57.
Saturday Night
A 40 percent chance of rain. Cloudy, with a low around 43.
Sunday
A 50 percent chance of rain. Cloudy, with a high near 57.
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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:
2:28 am EDT Mar 30, 2026
Forecast Valid:
4am EDT Mar 30, 2026-6pm EDT Apr 5, 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