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

29°F

-2°C

Humidity 58%
Wind Speed SW 12 mph
Barometer 29.98 in (1015.0 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 5 Feb 1:56 pm EST
Extended Forecast for

Deep River CT

Extreme Cold Watch February 7, 06:00pm until February 8, 01:00pm
Click here for hazard details and duration
Extreme Cold Watch

  • This Afternoon

    This Afternoon: Sunny, with a high near 30. Light northwest wind.

    High: 30 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 11. Calm wind.

    Low: 11 °F

    Partly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 30. Wind chill values between 10 and 20. Calm wind.

    High: 30 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Snow, mainly after 1am. Low around 16. Calm wind. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 16 °F

    Slight Chance
    Snow then
    Snow

  • Saturday

    Saturday: Snow, mainly before 1pm. Temperature falling to around 16 by 5pm. Blustery, with a light north wind becoming northwest 16 to 21 mph in the morning. Winds could gust as high as 34 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.

    High: 21 °F⇓

    Snow and
    Blustery

  • Saturday Night

    Saturday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 0. Blustery.

    Low: 0 °F

    Mostly Cloudy
    and Blustery
    then Partly
    Cloudy

  • Sunday

    Sunday: Sunny and cold, with a high near 17.

    High: 17 °F

    Cold

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 3.

    Low: 3 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 24.

    High: 24 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 30. Light northwest wind.
Tonight
Partly cloudy, with a low around 11. Calm wind.
Friday
Mostly cloudy, with a high near 30. Wind chill values between 10 and 20. Calm wind.
Friday Night
Snow, mainly after 1am. Low around 16. Calm wind. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Saturday
Snow, mainly before 1pm. Temperature falling to around 16 by 5pm. Blustery, with a light north wind becoming northwest 16 to 21 mph in the morning. Winds could gust as high as 34 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.
Saturday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 0. Blustery.
Sunday
Sunny and cold, with a high near 17.
Sunday Night
Mostly clear, with a low around 3.
Monday
Sunny, with a high near 24.
Monday Night
Mostly clear, with a low around 6.
Tuesday
Sunny, with a high near 31.
Tuesday Night
Mostly cloudy, with a low around 13.
Wednesday
Mostly sunny, with a high near 36.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Deep River CT
 41.39°N 72.43°W (Elev. 49 ft)
Last Update:
1:09 pm EST Feb 5, 2026
Forecast Valid:
2pm EST Feb 5, 2026-6pm EST Feb 11, 2026
 
Forecast Discussion
 
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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