National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

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

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Mostly Cloudy

58°F

14°C

Humidity 100%
Wind Speed NA
Barometer 29.94 in (1013.7 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 8 Oct 1:56 pm EDT
Extended Forecast for

3 Miles SSE South Lyme CT

  • This Afternoon

    This Afternoon: A 40 percent chance of showers. Mostly cloudy, with a steady temperature around 66. North wind around 14 mph.

    High: 66 °F

    Chance
    Showers

  • Tonight

    Tonight: Mostly clear, with a low around 45. North wind 9 to 14 mph.

    Low: 45 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 60. North wind 10 to 13 mph.

    High: 60 °F

    Sunny

  • Thursday Night

    Thursday Night: Patchy frost after 5am. Otherwise, clear, with a low around 34. North wind around 6 mph.

    Low: 34 °F

    Clear then
    Patchy Frost

  • Friday

    Friday: Patchy frost before 8am. Otherwise, sunny, with a high near 62. Light and variable wind becoming south around 6 mph in the afternoon.

    High: 62 °F

    Patchy Frost
    then Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

  • Saturday Night

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

    Low: 50 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 30 percent chance of rain. Mostly cloudy, with a high near 63.

    High: 63 °F

    Chance Rain

Detailed Forecast

This Afternoon
A 40 percent chance of showers. Mostly cloudy, with a steady temperature around 66. North wind around 14 mph.
Tonight
Mostly clear, with a low around 45. North wind 9 to 14 mph.
Thursday
Sunny, with a high near 60. North wind 10 to 13 mph.
Thursday Night
Patchy frost after 5am. Otherwise, clear, with a low around 34. North wind around 6 mph.
Friday
Patchy frost before 8am. Otherwise, sunny, with a high near 62. Light and variable wind becoming south around 6 mph in the afternoon.
Friday Night
Mostly clear, with a low around 48.
Saturday
Mostly sunny, with a high near 67.
Saturday Night
Mostly cloudy, with a low around 50.
Sunday
A 30 percent chance of rain. Mostly cloudy, with a high near 63.
Sunday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 50.
Columbus Day
A 30 percent chance of rain. Mostly cloudy, with a high near 65.
Monday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 49.
Tuesday
Mostly sunny, with a high near 67.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE South Lyme CT
 41.3°N 72.27°W (Elev. 75 ft)
Last Update:
11:35 am EDT Oct 8, 2025
Forecast Valid:
2pm EDT Oct 8, 2025-6pm EDT Oct 14, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation