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

61°F

16°C

Humidity 67%
Wind Speed SE 6 mph
Barometer 30.19 in (1022.2 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 19 Sep 7:56 pm EDT
Extended Forecast for

Niantic CT

  • Tonight

    Tonight: Mostly cloudy, with a low around 53. Light east wind.

    Low: 53 °F

    Mostly Cloudy

  • Sunday

    Sunday: Showers, mainly between 2pm and 5pm, then rain after 5pm. High near 70. Southeast wind 5 to 10 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 70 °F

    Chance
    Showers then
    Showers

  • Sunday Night

    Sunday Night: Rain before 8pm, then showers, mainly between 8pm and 2am. Low around 55. Southeast wind 5 to 7 mph becoming north after midnight. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 55 °F

    Rain

  • Monday

    Monday: A 30 percent chance of showers before 8am. Mostly cloudy through mid morning, then becoming sunny, with a high near 68. Northeast wind 9 to 11 mph, with gusts as high as 22 mph.

    High: 68 °F

    Chance
    Showers then
    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 51. Northeast wind 5 to 7 mph.

    Low: 51 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 66.

    High: 66 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 65. Breezy.

    High: 65 °F

    Partly Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 53. Light east wind.
Sunday
Showers, mainly between 2pm and 5pm, then rain after 5pm. High near 70. Southeast wind 5 to 10 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Rain before 8pm, then showers, mainly between 8pm and 2am. Low around 55. Southeast wind 5 to 7 mph becoming north after midnight. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Monday
A 30 percent chance of showers before 8am. Mostly cloudy through mid morning, then becoming sunny, with a high near 68. Northeast wind 9 to 11 mph, with gusts as high as 22 mph.
Monday Night
Mostly cloudy, with a low around 51. Northeast wind 5 to 7 mph.
Tuesday
Mostly cloudy, with a high near 66.
Tuesday Night
Mostly cloudy, with a low around 52.
Wednesday
Partly sunny, with a high near 65. Breezy.
Wednesday Night
Mostly cloudy, with a low around 52.
Thursday
A 30 percent chance of showers after 2pm. Mostly cloudy, with a high near 65. Breezy.
Thursday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 52. Breezy.
Friday
A 40 percent chance of showers. Mostly cloudy, with a high near 65. Breezy.
Friday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 53. Breezy.
Saturday
A 30 percent chance of showers. Mostly cloudy, with a high near 67. Breezy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Niantic CT
 41.31°N 72.21°W (Elev. 30 ft)
Last Update:
2:28 pm EDT Sep 19, 2026
Forecast Valid:
8pm EDT Sep 19, 2026-6pm EDT Sep 26, 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