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

63°F

17°C

Humidity 50%
Wind Speed S 9 mph
Barometer 30.17 in (1021.7 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 15 Oct 2:56 pm EDT
Extended Forecast for

Niantic CT

  • Tonight

    Tonight: A 30 percent chance of showers after 5am. Increasing clouds, with a low around 49. Calm wind becoming southeast around 6 mph after midnight.

    Low: 49 °F

    Mostly Clear
    then Chance
    Showers

  • Friday

    Friday: Showers, with thunderstorms also possible after 2pm. High near 71. South wind 10 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 71 °F

    Showers then
    Showers
    Likely

  • Friday Night

    Friday Night: Showers and thunderstorms before 5am, then showers likely. Low around 42. Southwest wind 7 to 9 mph becoming northwest after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 42 °F

    Showers then
    Showers
    Likely

  • Saturday

    Saturday: Showers likely before 8am. Cloudy through mid morning, then gradual clearing, with a high near 55. North wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 60%.

    High: 55 °F

    Showers
    Likely then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 35. North wind 6 to 8 mph.

    Low: 35 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 57.

    High: 57 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 30 percent chance of showers after 5am. Increasing clouds, with a low around 49. Calm wind becoming southeast around 6 mph after midnight.
Friday
Showers, with thunderstorms also possible after 2pm. High near 71. South wind 10 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers and thunderstorms before 5am, then showers likely. Low around 42. Southwest wind 7 to 9 mph becoming northwest after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers likely before 8am. Cloudy through mid morning, then gradual clearing, with a high near 55. North wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 60%.
Saturday Night
Mostly clear, with a low around 35. North wind 6 to 8 mph.
Sunday
Sunny, with a high near 57.
Sunday Night
Mostly clear, with a low around 42.
Monday
Sunny, with a high near 61.
Monday Night
Partly cloudy, with a low around 45.
Tuesday
Mostly sunny, with a high near 64.
Tuesday Night
Partly cloudy, with a low around 47.
Wednesday
Sunny, with a high near 64.
Wednesday Night
Mostly clear, with a low around 44.
Thursday
Sunny, with a high near 61.
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ABOUT THIS FORECAST

 
Point Forecast:
Niantic CT
 41.31°N 72.21°W (Elev. 30 ft)
Last Update:
2:36 pm EDT Oct 15, 2026
Forecast Valid:
3pm EDT Oct 15, 2026-6pm EDT Oct 22, 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