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

65°F

18°C

Humidity 56%
Wind Speed W 7 mph
Barometer 29.67 in (1004.7 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 20 Jun 12:56 am EDT
Extended Forecast for

3 Miles SE South Lyme CT

  • Overnight

    Overnight: Clear, with a low around 62. West wind around 11 mph.

    Low: 62 °F

    Clear

  • Saturday

    Saturday: Increasing clouds, with a high near 76. West wind 14 to 16 mph, with gusts as high as 28 mph.

    High: 76 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly cloudy, then gradually becoming clear, with a low around 61. Northwest wind 5 to 7 mph.

    Low: 61 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Increasing clouds, with a high near 76. Southwest wind 6 to 10 mph.

    High: 76 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 62. West wind around 6 mph becoming calm in the evening.

    Low: 62 °F

    Partly Cloudy

  • Monday

    Monday: Showers and possibly a thunderstorm. High near 74. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

    High: 74 °F

    Showers
    Likely then
    Showers

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 63. Chance of precipitation is 90%.

    Low: 63 °F

    Showers

  • Tuesday

    Tuesday: A 30 percent chance of showers before 8am. Mostly sunny, with a high near 76.

    High: 76 °F

    Chance
    Showers then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

Detailed Forecast

Overnight
Clear, with a low around 62. West wind around 11 mph.
Saturday
Increasing clouds, with a high near 76. West wind 14 to 16 mph, with gusts as high as 28 mph.
Saturday Night
Mostly cloudy, then gradually becoming clear, with a low around 61. Northwest wind 5 to 7 mph.
Sunday
Increasing clouds, with a high near 76. Southwest wind 6 to 10 mph.
Sunday Night
Partly cloudy, with a low around 62. West wind around 6 mph becoming calm in the evening.
Monday
Showers and possibly a thunderstorm. High near 74. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Monday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 63. Chance of precipitation is 90%.
Tuesday
A 30 percent chance of showers before 8am. Mostly sunny, with a high near 76.
Tuesday Night
Mostly clear, with a low around 63.
Wednesday
Sunny, with a high near 76.
Wednesday Night
Mostly clear, with a low around 63.
Thursday
Mostly sunny, with a high near 74.
Thursday Night
A 30 percent chance of showers. Partly cloudy, with a low around 63.
Friday
A 30 percent chance of showers. Mostly sunny, with a high near 74.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE South Lyme CT
 41.3°N 72.24°W (Elev. 0 ft)
Last Update:
4:47 pm EDT Jun 19, 2026
Forecast Valid:
1am EDT Jun 20, 2026-6pm EDT Jun 26, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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