Hazardous Weather Conditions
Current conditions at
Groton / New London, Groton / New London Airport (KGON)
Lat: 41.33°NLon: 72.05°WElev: 10ft.
Fog/Mist
27°F
-3°C
| Humidity | 96% |
| Wind Speed | Calm |
| Barometer | 30.08 in (1018.6 mb) |
| Dewpoint | 26°F (-3°C) |
| Visibility | 3.00 mi |
| Last update | 18 Jan 2:56 am EST |
Extended Forecast for
South Lyme CT
Winter Weather Advisory January 18, 10:00am until January 19, 04:00am
Overnight

Low: 30 °F
Slight Chance
Snow and
Areas
Freezing FogSunday

High: 36 °F
Rain/Snow and
Areas
Freezing FogSunday Night

Low: 22 °F
Snow
M.L.King Day

High: 32 °F
Mostly Sunny
Monday Night

Low: 16 °F
Partly Cloudy
Tuesday

High: 25 °F
Mostly Sunny
Tuesday Night

Low: 10 °F
Mostly Clear
Wednesday

High: 37 °F
Mostly Sunny
Wednesday Night

Low: 28 °F
Mostly Cloudy
Detailed Forecast
Overnight
A 20 percent chance of snow after 4am. Areas of freezing fog. Mostly cloudy, with a low around 30. Calm wind.
Sunday
Snow before 10am, then snow likely, possibly mixed with rain between 10am and 4pm, then snow after 4pm. Areas of freezing fog before 7am. High near 36. Calm wind becoming northeast around 5 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.
Sunday Night
Snow, mainly before 1am. Low around 22. Light and variable wind. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.
M.L.King Day
Mostly sunny, with a high near 32. Wind chill values between 20 and 25. West wind 5 to 15 mph, with gusts as high as 28 mph.
Monday Night
Partly cloudy, with a low around 16. West wind around 9 mph, with gusts as high as 24 mph.
Tuesday
Mostly sunny, with a high near 25.
Tuesday Night
Mostly clear, with a low around 10.
Wednesday
Mostly sunny, with a high near 37.
Wednesday Night
Mostly cloudy, with a low around 28.
Thursday
Partly sunny, with a high near 37.
Thursday Night
Mostly clear, with a low around 18.
Friday
Mostly sunny, with a high near 32.
Friday Night
Mostly cloudy, with a low around 23.
Saturday
A chance of rain and snow. Mostly cloudy, with a high near 35. Chance of precipitation is 30%.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
South Lyme CT
41.32°N 72.29°W (Elev. 98 ft)
41.32°N 72.29°W (Elev. 98 ft)
1:04 am EST Jan 18, 2026
3am EST Jan 18, 2026-6pm EST Jan 24, 2026



