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.

Light Rain Fog/Mist

45°F

7°C

Humidity 100%
Wind Speed N 3 mph
Barometer 29.72 in (1006.4 mb)
Dewpoint 45°F (7°C)
Visibility 6.00 mi
Last update 22 Mar 8:56 pm EDT
Extended Forecast for

Niantic CT

  • Tonight

    Tonight: Rain. Low around 36. Calm wind. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 36 °F

    Rain

  • Monday

    Monday: Rain, mainly before 11am. High near 44. North wind 7 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 44 °F

    Rain then
    Slight Chance
    Rain

  • Monday Night

    Monday Night: Partly cloudy, with a low around 29. Northwest wind around 6 mph.

    Low: 29 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 46. Wind chill values between 25 and 35 early. North wind around 6 mph becoming southwest in the afternoon.

    High: 46 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 32. Southwest wind around 5 mph.

    Low: 32 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 49.

    High: 49 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 36.

    Low: 36 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 52.

    High: 52 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Rain likely, mainly after 2am. Mostly cloudy, with a low around 41. Chance of precipitation is 60%.

    Low: 41 °F

    Rain Likely

Detailed Forecast

Tonight
Rain. Low around 36. Calm wind. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Monday
Rain, mainly before 11am. High near 44. North wind 7 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Monday Night
Partly cloudy, with a low around 29. Northwest wind around 6 mph.
Tuesday
Sunny, with a high near 46. Wind chill values between 25 and 35 early. North wind around 6 mph becoming southwest in the afternoon.
Tuesday Night
Partly cloudy, with a low around 32. Southwest wind around 5 mph.
Wednesday
Partly sunny, with a high near 49.
Wednesday Night
Mostly cloudy, with a low around 36.
Thursday
Partly sunny, with a high near 52.
Thursday Night
Rain likely, mainly after 2am. Mostly cloudy, with a low around 41. Chance of precipitation is 60%.
Friday
Rain likely before 8am. Partly sunny, with a high near 53. Chance of precipitation is 60%.
Friday Night
Partly cloudy, with a low around 23.
Saturday
Sunny, with a high near 41.
Saturday Night
Mostly clear, with a low around 27.
Sunday
Mostly sunny, with a high near 46.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Niantic CT
 41.34°N 72.2°W (Elev. 92 ft)
Last Update:
3:49 pm EDT Mar 22, 2026
Forecast Valid:
9pm EDT Mar 22, 2026-6pm EDT Mar 29, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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