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.

Fair

50°F

10°C

Humidity 44%
Wind Speed NW 9 mph
Barometer 30.18 in (1021.9 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 24 Nov 2:56 pm EST
Extended Forecast for

2 Miles NNE Deep River CT

  • Tonight

    Tonight: Increasing clouds, with a low around 31. Northwest wind around 5 mph becoming calm in the evening.

    Low: 31 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: A 30 percent chance of rain after 4pm. Cloudy, with a high near 55. Calm wind becoming south 5 to 9 mph in the morning.

    High: 55 °F

    Mostly Cloudy
    then Chance
    Rain

  • Tuesday Night

    Tuesday Night: Rain, mainly after 7pm. Temperature rising to around 52 by 2am. South wind 5 to 7 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 47 °F⇑

    Rain

  • Wednesday

    Wednesday: Showers likely, mainly before 7am. Cloudy, with a high near 61. Southwest wind 6 to 8 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 61 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers before midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 37. West wind 5 to 9 mph, with gusts as high as 21 mph.

    Low: 37 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Thanksgiving Day

    Thanksgiving Day: Mostly sunny, with a high near 46.

    High: 46 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 30.

    Low: 30 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 43.

    High: 43 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 29.

    Low: 29 °F

    Mostly Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 31. Northwest wind around 5 mph becoming calm in the evening.
Tuesday
A 30 percent chance of rain after 4pm. Cloudy, with a high near 55. Calm wind becoming south 5 to 9 mph in the morning.
Tuesday Night
Rain, mainly after 7pm. Temperature rising to around 52 by 2am. South wind 5 to 7 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Wednesday
Showers likely, mainly before 7am. Cloudy, with a high near 61. Southwest wind 6 to 8 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
A 20 percent chance of showers before midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 37. West wind 5 to 9 mph, with gusts as high as 21 mph.
Thanksgiving Day
Mostly sunny, with a high near 46.
Thursday Night
Mostly clear, with a low around 30.
Friday
Mostly sunny, with a high near 43.
Friday Night
Mostly clear, with a low around 29.
Saturday
Sunny, with a high near 42.
Saturday Night
Partly cloudy, with a low around 27.
Sunday
Partly sunny, with a high near 48.
Sunday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 36.
Monday
A 50 percent chance of rain. Mostly cloudy, with a high near 53.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE Deep River CT
 41.43°N 72.42°W (Elev. 98 ft)
Last Update:
3:30 pm EST Nov 24, 2025
Forecast Valid:
3pm EST Nov 24, 2025-6pm EST Dec 1, 2025
 
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