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.

Light Snow Fog/Mist

33°F

1°C

Humidity 92%
Wind Speed N 10 mph
Barometer 29.76 in (1007.6 mb)
Dewpoint 31°F (-1°C)
Visibility 4.00 mi
Wind Chill25°F (-4°C)
Last update 18 Jan 10:56 pm EST
Extended Forecast for

2 Miles N South Lyme CT

Winter Weather Advisory January 18, 11:13pm until January 19, 04:00am
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory January 18, 11:13pm until January 19, 04:00am

    NOW until 4:00am Mon

    Winter Weather Advisory

  • Tonight

    Low: 26 °F

    Snow Likely

  • M.L.King Day

    M.L.King Day: Cloudy through mid morning, then gradual clearing, with a high near 33. Wind chill values between 20 and 25. West wind 5 to 11 mph, with gusts as high as 23 mph.

    High: 33 °F

    Gradual
    Clearing

  • Monday Night

    Monday Night: Mostly cloudy, then gradually becoming clear, with a low around 18. Wind chill values between 10 and 15. West wind 8 to 11 mph, with gusts as high as 28 mph.

    Low: 18 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Sunny, with a high near 24. Wind chill values between 5 and 10. West wind 10 to 14 mph, with gusts as high as 25 mph.

    High: 24 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 11. West wind 5 to 7 mph.

    Low: 11 °F

    Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 36.

    High: 36 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of rain before 1pm, then a chance of rain and snow. Partly sunny, with a high near 40. Chance of precipitation is 30%.

    High: 40 °F

    Chance Rain
    then Chance
    Rain/Snow

Detailed Forecast

Tonight
Snow likely, mainly before 1am. Cloudy, with a low around 26. Northwest wind 3 to 7 mph. Chance of precipitation is 70%. Total nighttime snow accumulation of 2 to 4 inches possible.
M.L.King Day
Cloudy through mid morning, then gradual clearing, with a high near 33. Wind chill values between 20 and 25. West wind 5 to 11 mph, with gusts as high as 23 mph.
Monday Night
Mostly cloudy, then gradually becoming clear, with a low around 18. Wind chill values between 10 and 15. West wind 8 to 11 mph, with gusts as high as 28 mph.
Tuesday
Sunny, with a high near 24. Wind chill values between 5 and 10. West wind 10 to 14 mph, with gusts as high as 25 mph.
Tuesday Night
Clear, with a low around 11. West wind 5 to 7 mph.
Wednesday
Mostly sunny, with a high near 36.
Wednesday Night
Mostly cloudy, with a low around 27.
Thursday
A chance of rain before 1pm, then a chance of rain and snow. Partly sunny, with a high near 40. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 17.
Friday
Mostly sunny, with a high near 29.
Friday Night
Mostly cloudy, with a low around 16.
Saturday
Mostly sunny, with a high near 28.
Saturday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 10.
Sunday
A 30 percent chance of snow. Partly sunny, with a high near 21.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles N South Lyme CT
 41.35°N 72.29°W (Elev. 98 ft)
Last Update:
8:25 pm EST Jan 18, 2026
Forecast Valid:
11pm EST Jan 18, 2026-6pm EST Jan 25, 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