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.

Overcast

71°F

22°C

Humidity 96%
Wind Speed Calm
Barometer 30.00 in (1016.0 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 18 Sep 3:56 am EDT
Extended Forecast for

Niantic CT

  • Overnight

    Overnight: A 20 percent chance of showers. Mostly cloudy, with a low around 68. Light west wind.

    Low: 68 °F

    Slight Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 81. North wind 3 to 8 mph.

    High: 81 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 51. North wind 6 to 9 mph.

    Low: 51 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 69. Northeast wind 5 to 7 mph becoming light and variable in the afternoon.

    High: 69 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 53. Calm wind.

    Low: 53 °F

    Mostly Cloudy

  • Sunday

    Sunday: Showers likely after 2pm. Mostly cloudy, with a high near 69. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 69 °F

    Mostly Cloudy
    then Showers
    Likely

  • Sunday Night

    Sunday Night: Showers. Low around 57. Chance of precipitation is 80%.

    Low: 57 °F

    Showers

  • Monday

    Monday: Showers likely, mainly before 8am. Mostly cloudy, with a high near 68. Chance of precipitation is 60%.

    High: 68 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 53.

    Low: 53 °F

    Chance
    Showers

Detailed Forecast

Overnight
A 20 percent chance of showers. Mostly cloudy, with a low around 68. Light west wind.
Friday
Mostly sunny, with a high near 81. North wind 3 to 8 mph.
Friday Night
Partly cloudy, with a low around 51. North wind 6 to 9 mph.
Saturday
Mostly sunny, with a high near 69. Northeast wind 5 to 7 mph becoming light and variable in the afternoon.
Saturday Night
Mostly cloudy, with a low around 53. Calm wind.
Sunday
Showers likely after 2pm. Mostly cloudy, with a high near 69. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Showers. Low around 57. Chance of precipitation is 80%.
Monday
Showers likely, mainly before 8am. Mostly cloudy, with a high near 68. Chance of precipitation is 60%.
Monday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 53.
Tuesday
A 40 percent chance of showers. Mostly cloudy, with a high near 65.
Tuesday Night
Mostly cloudy, with a low around 51.
Wednesday
Partly sunny, with a high near 66. Breezy.
Wednesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 51.
Thursday
A 30 percent chance of showers. Partly sunny, with a high near 67.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Niantic CT
 41.31°N 72.21°W (Elev. 30 ft)
Last Update:
1:48 am EDT Sep 18, 2026
Forecast Valid:
4am EDT Sep 18, 2026-6pm EDT Sep 24, 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