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

51°F

11°C

Humidity 86%
Wind Speed SW 10 mph
Barometer 29.88 in (1011.9 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 1 Apr 2:56 am EDT
Extended Forecast for

2 Miles SSE South Lyme CT

  • Overnight

    Overnight: Mostly cloudy, with a low around 52. Southwest wind around 13 mph.

    Low: 52 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of showers before 2pm, then a chance of showers and thunderstorms between 2pm and 5pm, then showers and possibly a thunderstorm after 5pm. High near 63. Southwest wind 7 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 63 °F

    Chance
    Showers then
    Showers

  • Wednesday Night

    Wednesday Night: Showers. Patchy fog after 2am. Low around 39. Northeast wind 5 to 11 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 44. Northeast wind 11 to 13 mph.

    High: 44 °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 10 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 55. Chance of precipitation is 30%.

    High: 55 °F

    Chance Light
    Rain and
    Areas Fog
    then Patchy
    Fog

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 50.

    Low: 50 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of showers after 2pm. Partly sunny, with a high near 63.

    High: 63 °F

    Partly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 45.

    Low: 45 °F

    Chance
    Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 52. Southwest wind around 13 mph.
Wednesday
A chance of showers before 2pm, then a chance of showers and thunderstorms between 2pm and 5pm, then showers and possibly a thunderstorm after 5pm. High near 63. Southwest wind 7 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers. Patchy fog after 2am. Low around 39. Northeast wind 5 to 11 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 44. Northeast wind 11 to 13 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 10 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 55. Chance of precipitation is 30%.
Friday Night
Mostly cloudy, with a low around 50.
Saturday
A 30 percent chance of showers after 2pm. Partly sunny, with a high near 63.
Saturday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 45.
Sunday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 58. Chance of precipitation is 70%.
Sunday Night
Showers likely. Mostly cloudy, with a low around 40. Chance of precipitation is 60%.
Monday
A 30 percent chance of showers. Mostly sunny, with a high near 51.
Monday Night
Mostly clear, with a low around 36.
Tuesday
Mostly sunny, with a high near 49.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE South Lyme CT
 41.28°N 72.3°W (Elev. 0 ft)
Last Update:
2:38 am EDT Apr 1, 2026
Forecast Valid:
3am EDT Apr 1, 2026-6pm EDT Apr 7, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation