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.

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

New London CT

Winter Weather Advisory January 18, 10:00am until January 19, 04:00am
Click here for hazard details and duration
Winter Weather Advisory

  • Overnight

    Overnight: A 20 percent chance of snow after 4am. Areas of freezing fog. Mostly cloudy, with a low around 29. Calm wind.

    Low: 29 °F

    Slight Chance
    Snow and
    Areas
    Freezing Fog

  • Sunday

    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 east around 6 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.

    High: 36 °F

    Rain/Snow and
    Areas
    Freezing Fog

  • Sunday Night

    Sunday Night: Snow, mainly before 1am. Low around 22. Calm wind becoming northwest around 5 mph after midnight. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

    Low: 22 °F

    Snow

  • M.L.King Day

    M.L.King Day: Mostly cloudy, then gradually becoming sunny, with a high near 32. Wind chill values between 15 and 20. Southwest wind 5 to 10 mph increasing to 11 to 16 mph in the afternoon. Winds could gust as high as 28 mph.

    High: 32 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Partly cloudy, with a low around 15. West wind around 9 mph, with gusts as high as 24 mph.

    Low: 15 °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 10.

    Low: 10 °F

    Mostly 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 28.

    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 29. 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 east around 6 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.
Sunday Night
Snow, mainly before 1am. Low around 22. Calm wind becoming northwest around 5 mph after midnight. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.
M.L.King Day
Mostly cloudy, then gradually becoming sunny, with a high near 32. Wind chill values between 15 and 20. Southwest wind 5 to 10 mph increasing to 11 to 16 mph in the afternoon. Winds could gust as high as 28 mph.
Monday Night
Partly cloudy, with a low around 15. West wind around 9 mph, with gusts as high as 24 mph.
Tuesday
Sunny, with a high near 25.
Tuesday Night
Mostly clear, with a low around 10.
Wednesday
Mostly sunny, with a high near 36.
Wednesday Night
Mostly cloudy, with a low around 28.
Thursday
Partly sunny, with a high near 37.
Thursday Night
Partly cloudy, with a low around 17.
Friday
Mostly sunny, with a high near 32.
Friday Night
Mostly cloudy, with a low around 23.
Saturday
A 30 percent chance of snow. Mostly cloudy, with a high near 35.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
New London CT
 41.37°N 72.11°W (Elev. 125 ft)
Last Update:
1:04 am EST Jan 18, 2026
Forecast Valid:
3am EST Jan 18, 2026-6pm EST Jan 24, 2026
 
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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