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

79°F

26°C

Humidity 74%
Wind Speed N 10 mph
Barometer 29.68 in (1004.9 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 12 Jun 9:56 pm EDT
Extended Forecast for

3 Miles N South Lyme CT

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 67. Northwest wind 3 to 7 mph. Winds could gust as high as 20 mph.

    Low: 67 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 88. Northwest wind around 8 mph.

    High: 88 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 64. Light and variable wind.

    Low: 64 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 89. Light and variable wind becoming south 6 to 11 mph in the morning. Winds could gust as high as 22 mph.

    High: 89 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Showers before 11pm, then showers and possibly a thunderstorm between 11pm and 2am, then a chance of showers and thunderstorms after 2am. Low around 63. South wind 5 to 8 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 63 °F

    Showers

  • Monday

    Monday: A 30 percent chance of showers before 8am. Mostly sunny, with a high near 82.

    High: 82 °F

    Chance
    Showers then
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 67. Northwest wind 3 to 7 mph. Winds could gust as high as 20 mph.
Saturday
Sunny, with a high near 88. Northwest wind around 8 mph.
Saturday Night
Mostly clear, with a low around 64. Light and variable wind.
Sunday
Mostly sunny, with a high near 89. Light and variable wind becoming south 6 to 11 mph in the morning. Winds could gust as high as 22 mph.
Sunday Night
Showers before 11pm, then showers and possibly a thunderstorm between 11pm and 2am, then a chance of showers and thunderstorms after 2am. Low around 63. South wind 5 to 8 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
A 30 percent chance of showers before 8am. Mostly sunny, with a high near 82.
Monday Night
Partly cloudy, with a low around 57.
Tuesday
Mostly sunny, with a high near 78.
Tuesday Night
Partly cloudy, with a low around 59.
Wednesday
Mostly sunny, with a high near 81.
Wednesday Night
Partly cloudy, with a low around 61.
Thursday
A 40 percent chance of showers. Partly sunny, with a high near 82.
Thursday Night
A 40 percent chance of showers. Partly cloudy, with a low around 66.
Juneteenth
Mostly sunny, with a high near 85.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles N South Lyme CT
 41.37°N 72.31°W (Elev. 98 ft)
Last Update:
8:13 pm EDT Jun 12, 2026
Forecast Valid:
10pm EDT Jun 12, 2026-6pm EDT Jun 19, 2026
 
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Additional Resources

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Chance of Precipitation