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.

Fair

49°F

9°C

Humidity 43%
Wind Speed NW 12 mph
Barometer 30.34 in (1027.3 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 11 Apr 9:56 pm EDT
Extended Forecast for

3 Miles SE South Lyme CT

Frost Advisory April 12, 12:00am until April 12, 09:00am
Click here for hazard details and duration
Frost Advisory

  • Tonight

    Tonight: Clear, with a low around 39. North wind 5 to 7 mph.

    Low: 39 °F

    Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 49. North wind 5 to 8 mph becoming south in the afternoon.

    High: 49 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: A 30 percent chance of showers, mainly after 2am. Mostly cloudy, with a low around 43. South wind 8 to 11 mph.

    Low: 43 °F

    Chance
    Showers

  • Monday

    Monday: A chance of showers before 8am, then a slight chance of showers after 2pm. Mostly cloudy, with a high near 60. Southwest wind 10 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

    High: 60 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A 20 percent chance of showers before 2am. Mostly cloudy, then gradually becoming mostly clear, with a low around 53. Southwest wind 7 to 11 mph, with gusts as high as 23 mph.

    Low: 53 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: Partly sunny, with a high near 66.

    High: 66 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 53.

    Low: 53 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 55.

    Low: 55 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 39. North wind 5 to 7 mph.
Sunday
Increasing clouds, with a high near 49. North wind 5 to 8 mph becoming south in the afternoon.
Sunday Night
A 30 percent chance of showers, mainly after 2am. Mostly cloudy, with a low around 43. South wind 8 to 11 mph.
Monday
A chance of showers before 8am, then a slight chance of showers after 2pm. Mostly cloudy, with a high near 60. Southwest wind 10 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Monday Night
A 20 percent chance of showers before 2am. Mostly cloudy, then gradually becoming mostly clear, with a low around 53. Southwest wind 7 to 11 mph, with gusts as high as 23 mph.
Tuesday
Partly sunny, with a high near 66.
Tuesday Night
Mostly cloudy, with a low around 53.
Wednesday
Mostly sunny, with a high near 69.
Wednesday Night
Mostly cloudy, with a low around 55.
Thursday
Partly sunny, with a high near 70.
Thursday Night
Mostly cloudy, with a low around 54.
Friday
A 30 percent chance of showers. Partly sunny, with a high near 64.
Friday Night
Mostly cloudy, with a low around 50.
Saturday
Partly sunny, with a high near 60.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE South Lyme CT
 41.3°N 72.24°W (Elev. 0 ft)
Last Update:
6:36 pm EDT Apr 11, 2026
Forecast Valid:
10pm EDT Apr 11, 2026-6pm EDT Apr 18, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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