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.

Mostly Cloudy

56°F

13°C

Humidity 84%
Wind Speed S 5 mph
Barometer 30.20 in (1022.5 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 21 May 5:56 pm EDT
Extended Forecast for

Niantic CT

  • Tonight

    Tonight: A 20 percent chance of rain before 8pm. Mostly cloudy, with a low around 50. Calm wind.

    Low: 50 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 65. Northeast wind 7 to 9 mph becoming southeast in the afternoon.

    High: 65 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 49. Calm wind.

    Low: 49 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 50 percent chance of rain, mainly after 2pm. Cloudy, with a high near 61. East wind 5 to 10 mph.

    High: 61 °F

    Slight Chance
    Rain then
    Chance Rain

  • Saturday Night

    Saturday Night: Rain, mainly after 8pm. Low around 49. East wind 6 to 9 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 49 °F

    Rain

  • Sunday

    Sunday: Rain. High near 59. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 59 °F

    Rain

  • Sunday Night

    Sunday Night: Rain before 8pm, then showers likely, mainly between 8pm and 2am. Low around 53. Chance of precipitation is 80%.

    Low: 53 °F

    Rain

  • Memorial Day

    Memorial Day: A 40 percent chance of showers before 2pm. Mostly cloudy, with a high near 70.

    High: 70 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 56.

    Low: 56 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of rain before 8pm. Mostly cloudy, with a low around 50. Calm wind.
Friday
Mostly sunny, with a high near 65. Northeast wind 7 to 9 mph becoming southeast in the afternoon.
Friday Night
Mostly cloudy, with a low around 49. Calm wind.
Saturday
A 50 percent chance of rain, mainly after 2pm. Cloudy, with a high near 61. East wind 5 to 10 mph.
Saturday Night
Rain, mainly after 8pm. Low around 49. East wind 6 to 9 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
Rain. High near 59. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Sunday Night
Rain before 8pm, then showers likely, mainly between 8pm and 2am. Low around 53. Chance of precipitation is 80%.
Memorial Day
A 40 percent chance of showers before 2pm. Mostly cloudy, with a high near 70.
Monday Night
Mostly cloudy, with a low around 56.
Tuesday
Mostly cloudy, with a high near 76.
Tuesday Night
Mostly cloudy, with a low around 57.
Wednesday
Mostly sunny, with a high near 81.
Wednesday Night
Partly cloudy, with a low around 56.
Thursday
Mostly sunny, with a high near 78.
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:
2:25 pm EDT May 21, 2026
Forecast Valid:
6pm EDT May 21, 2026-6pm EDT May 28, 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