Current conditions at

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

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Overcast

50°F

10°C

Humidity 80%
Wind Speed NE 3 mph
Barometer 30.05 in (1017.4 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 21 May 1:56 am EDT
Extended Forecast for

3 Miles SE South Lyme CT

  • Overnight

    Overnight: A slight chance of sprinkles.  Cloudy, with a low around 50. East wind around 9 mph.

    Low: 50 °F

    Slight Chance
    Sprinkles

  • Wednesday

    Wednesday: A slight chance of showers before 8am, then a chance of rain after 2pm.  Cloudy, with a high near 54. East wind 11 to 13 mph.  Chance of precipitation is 30%.

    High: 54 °F

    Mostly Cloudy
    then Chance
    Rain

  • Wednesday Night

    Wednesday Night: Rain, mainly after 8pm.  Low around 48. East wind 14 to 18 mph.  Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 48 °F

    Rain Likely
    then Rain

  • Thursday

    Thursday: Rain.  High near 54. East wind 16 to 18 mph.  Chance of precipitation is 90%. New precipitation amounts between 1 and 2 inches possible.

    High: 54 °F

    Rain

  • Thursday Night

    Thursday Night: Rain likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and midnight, then a chance of showers after midnight.  Cloudy, with a low around 44. Northwest wind 10 to 16 mph.  Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 44 °F

    Showers
    Likely

  • Friday

    Friday: A 30 percent chance of showers after 2pm.  Mostly cloudy, with a high near 57.

    High: 57 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers.  Mostly cloudy, with a low around 48.

    Low: 48 °F

    Chance
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 60.

    High: 60 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

Detailed Forecast

Overnight
A slight chance of sprinkles. Cloudy, with a low around 50. East wind around 9 mph.
Wednesday
A slight chance of showers before 8am, then a chance of rain after 2pm. Cloudy, with a high near 54. East wind 11 to 13 mph. Chance of precipitation is 30%.
Wednesday Night
Rain, mainly after 8pm. Low around 48. East wind 14 to 18 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Rain. High near 54. East wind 16 to 18 mph. Chance of precipitation is 90%. New precipitation amounts between 1 and 2 inches possible.
Thursday Night
Rain likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and midnight, then a chance of showers after midnight. Cloudy, with a low around 44. Northwest wind 10 to 16 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
A 30 percent chance of showers after 2pm. Mostly cloudy, with a high near 57.
Friday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 48.
Saturday
Partly sunny, with a high near 60.
Saturday Night
Partly cloudy, with a low around 50.
Sunday
Mostly sunny, with a high near 64.
Sunday Night
Partly cloudy, with a low around 52.
Memorial Day
Mostly sunny, with a high near 65.
Monday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 53.
Tuesday
A 30 percent chance of showers. Partly sunny, with a high near 65.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE South Lyme CT
 41.3°N 72.24°W (Elev. 0 ft)
8:54 pm EDT May 20, 2025
2am EDT May 21, 2025-6pm EDT May 27, 2025
 
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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