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.

Overcast

38°F

3°C

Humidity 70%
Wind Speed S 9 mph
Barometer 30.09 in (1018.9 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 17 Jan 4:56 am EST
Extended Forecast for

2 Miles N South Lyme CT

  • Overnight

    Overnight: A 20 percent chance of snow. Mostly cloudy, with a steady temperature around 34. Calm wind.

    Low: 34 °F

    Slight Chance
    Snow

  • Saturday

    Saturday: A slight chance of snow before 8am, then rain likely. Mostly cloudy, with a high near 42. Light south wind increasing to 5 to 9 mph in the morning. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 42 °F

    Chance
    Rain/Snow
    then Rain
    Likely

  • Saturday Night

    Saturday Night: A slight chance of snow before 7pm, then a slight chance of snow after 4am. Mostly cloudy, with a low around 29. Light west wind. Chance of precipitation is 20%.

    Low: 29 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Sunday

    Sunday: Snow likely, possibly mixed with rain, becoming all snow after 4pm. Cloudy, with a high near 36. Calm wind becoming west around 5 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

    High: 36 °F

    Rain/Snow
    Likely

  • Sunday Night

    Sunday Night: A 30 percent chance of snow before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 22. Light northwest wind.

    Low: 22 °F

    Chance Snow

  • M.L.King Day

    M.L.King Day: Mostly sunny, with a high near 33.

    High: 33 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 17.

    Low: 17 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 25.

    High: 25 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 13.

    Low: 13 °F

    Mostly Clear

Detailed Forecast

Overnight
A 20 percent chance of snow. Mostly cloudy, with a steady temperature around 34. Calm wind.
Saturday
A slight chance of snow before 8am, then rain likely. Mostly cloudy, with a high near 42. Light south wind increasing to 5 to 9 mph in the morning. Chance of precipitation is 60%. Little or no snow accumulation expected.
Saturday Night
A slight chance of snow before 7pm, then a slight chance of snow after 4am. Mostly cloudy, with a low around 29. Light west wind. Chance of precipitation is 20%.
Sunday
Snow likely, possibly mixed with rain, becoming all snow after 4pm. Cloudy, with a high near 36. Calm wind becoming west around 5 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.
Sunday Night
A 30 percent chance of snow before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 22. Light northwest wind.
M.L.King Day
Mostly sunny, with a high near 33.
Monday Night
Partly cloudy, with a low around 17.
Tuesday
Sunny, with a high near 25.
Tuesday Night
Mostly clear, with a low around 13.
Wednesday
Mostly sunny, with a high near 35.
Wednesday Night
Mostly cloudy, with a low around 26.
Thursday
Partly sunny, with a high near 39.
Thursday Night
Mostly cloudy, with a low around 21.
Friday
Mostly sunny, with a high near 32.
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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:
4:17 am EST Jan 17, 2026
Forecast Valid:
5am EST Jan 17, 2026-6pm EST Jan 23, 2026
 
Forecast Discussion
 
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Additional Resources

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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