Current conditions at

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

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Fog/Mist

50°F

10°C

Humidity 96%
Wind Speed SW 10 mph
Barometer 29.82 in (1009.7 mb)
Dewpoint 49°F (9°C)
Visibility 1.00 mi
Wind Chill46°F (8°C)
Last update 5 Apr 11:56 am EDT
Extended Forecast for

South Lyme CT

  • This Afternoon

    This Afternoon: Rain likely and possibly a thunderstorm, then rain after 2pm.  Steady temperature around 54. Southwest wind 10 to 13 mph, with gusts as high as 24 mph.  Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 54 °F

    Rain

  • Tonight

    Tonight: Rain likely, mainly before 8pm.  Cloudy during the early evening, then gradual clearing, with a low around 38. Southwest wind around 6 mph becoming northwest after midnight.  Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 38 °F

    Rain Likely
    then Partly
    Cloudy

  • Monday

    Monday: Sunny, with a high near 53. West wind 7 to 10 mph, with gusts as high as 20 mph.

    High: 53 °F

    Sunny

  • Monday Night

    Monday Night: A 30 percent chance of rain, mainly after 2am.  Partly cloudy, with a low around 37. Light west wind.

    Low: 37 °F

    Chance Rain

  • Tuesday

    Tuesday: A 30 percent chance of rain, mainly before 2pm.  Mostly sunny, with a high near 51. West wind 5 to 10 mph, with gusts as high as 21 mph.

    High: 51 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 28.

    Low: 28 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 46.

    High: 46 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 33.

    Low: 33 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 53.

    High: 53 °F

    Sunny

Detailed Forecast

This Afternoon
Rain likely and possibly a thunderstorm, then rain after 2pm. Steady temperature around 54. Southwest wind 10 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Rain likely, mainly before 8pm. Cloudy during the early evening, then gradual clearing, with a low around 38. Southwest wind around 6 mph becoming northwest after midnight. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Sunny, with a high near 53. West wind 7 to 10 mph, with gusts as high as 20 mph.
Monday Night
A 30 percent chance of rain, mainly after 2am. Partly cloudy, with a low around 37. Light west wind.
Tuesday
A 30 percent chance of rain, mainly before 2pm. Mostly sunny, with a high near 51. West wind 5 to 10 mph, with gusts as high as 21 mph.
Tuesday Night
Mostly clear, with a low around 28.
Wednesday
Sunny, with a high near 46.
Wednesday Night
Mostly clear, with a low around 33.
Thursday
Sunny, with a high near 53.
Thursday Night
Partly cloudy, with a low around 41.
Friday
Mostly sunny, with a high near 62.
Friday Night
Partly cloudy, with a low around 44.
Saturday
Partly sunny, with a high near 62.
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ABOUT THIS FORECAST

 
Point Forecast:
South Lyme CT
 41.32°N 72.29°W (Elev. 98 ft)
11:20 am EDT Apr 5, 2026
12pm EDT Apr 5, 2026-6pm EDT Apr 11, 2026
 
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Additional Resources

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