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

53°F

12°C

Humidity 83%
Wind Speed SW 8 mph
Barometer 29.89 in (1012.1 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 1 Apr 3:56 am EDT
Extended Forecast for

3 Miles SE South Lyme CT

  • Overnight

    Overnight: A 50 percent chance of showers after 5am. Mostly cloudy, with a low around 51. Southwest wind around 14 mph.

    Low: 51 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Showers, mainly after 5pm. High near 62. Southwest wind 7 to 11 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 62 °F

    Chance
    Showers then
    Showers

  • Wednesday Night

    Wednesday Night: Showers. Patchy fog after 2am. Low around 39. Northeast wind 6 to 13 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 39 °F

    Showers and
    Patchy Fog

  • Thursday

    Thursday: A 40 percent chance of rain, mainly before 2pm. Patchy fog before 2pm. Otherwise, cloudy, with a high near 42. Northeast wind around 14 mph.

    High: 42 °F

    Chance Rain
    and Patchy
    Fog

  • Thursday Night

    Thursday Night: A slight chance of rain or drizzle before 8pm, then a chance of drizzle or light rain, mainly after 2am. Areas of fog after 8pm. Otherwise, cloudy, with a low around 39. East wind 6 to 11 mph. Chance of precipitation is 30%.

    Low: 39 °F

    Chance Light
    Rain and
    Areas Fog

  • Friday

    Friday: A chance of drizzle or light rain before 8am. Areas of fog before 2pm. Otherwise, mostly cloudy, with a high near 54. Chance of precipitation is 30%.

    High: 54 °F

    Chance Light
    Rain and
    Areas Fog
    then Patchy
    Fog

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 49.

    Low: 49 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 61.

    High: 61 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers after 8pm. Mostly cloudy, with a low around 46.

    Low: 46 °F

    Chance
    Showers

Detailed Forecast

Overnight
A 50 percent chance of showers after 5am. Mostly cloudy, with a low around 51. Southwest wind around 14 mph.
Wednesday
Showers, mainly after 5pm. High near 62. Southwest wind 7 to 11 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Showers. Patchy fog after 2am. Low around 39. Northeast wind 6 to 13 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
A 40 percent chance of rain, mainly before 2pm. Patchy fog before 2pm. Otherwise, cloudy, with a high near 42. Northeast wind around 14 mph.
Thursday Night
A slight chance of rain or drizzle before 8pm, then a chance of drizzle or light rain, mainly after 2am. Areas of fog after 8pm. Otherwise, cloudy, with a low around 39. East wind 6 to 11 mph. Chance of precipitation is 30%.
Friday
A chance of drizzle or light rain before 8am. Areas of fog before 2pm. Otherwise, mostly cloudy, with a high near 54. Chance of precipitation is 30%.
Friday Night
Mostly cloudy, with a low around 49.
Saturday
Partly sunny, with a high near 61.
Saturday Night
A 30 percent chance of showers after 8pm. Mostly cloudy, with a low around 46.
Sunday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 56. Chance of precipitation is 70%.
Sunday Night
Showers likely. Mostly cloudy, with a low around 41. Chance of precipitation is 60%.
Monday
A 30 percent chance of showers. Mostly sunny, with a high near 50.
Monday Night
Mostly clear, with a low around 37.
Tuesday
Mostly sunny, with a high near 47.
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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:
2:38 am EDT Apr 1, 2026
Forecast Valid:
4am EDT Apr 1, 2026-6pm EDT Apr 7, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation