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.

Fog

67°F

19°C

Humidity 100%
Wind Speed Calm
Barometer 29.83 in (1010.0 mb)
Dewpoint 67°F (19°C)
Visibility 0.50 mi
Last update 23 Jun 8:56 am EDT
Extended Forecast for

Niantic CT

  • Today

    Today: Showers and possibly a thunderstorm. High near 71. South wind around 7 mph becoming northwest in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 71 °F

    Showers

  • Tonight

    Tonight: Showers likely, mainly before 11pm. Cloudy during the early evening, then gradual clearing, with a low around 59. North wind 3 to 6 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 59 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: Sunny, with a high near 80. West wind around 8 mph.

    High: 80 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 60. West wind around 5 mph becoming calm in the evening.

    Low: 60 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 77. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 77 °F

    Sunny

  • Thursday Night

    Thursday Night: A 40 percent chance of showers after 2am. Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy
    then Chance
    Showers

  • Friday

    Friday: A 40 percent chance of showers. Mostly cloudy, with a high near 76.

    High: 76 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.

    Low: 65 °F

    Showers
    Likely

  • Saturday

    Saturday: Showers likely, mainly before 2pm. Mostly cloudy, with a high near 78. Chance of precipitation is 60%.

    High: 78 °F

    Showers
    Likely

Detailed Forecast

Today
Showers and possibly a thunderstorm. High near 71. South wind around 7 mph becoming northwest in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Showers likely, mainly before 11pm. Cloudy during the early evening, then gradual clearing, with a low around 59. North wind 3 to 6 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
Sunny, with a high near 80. West wind around 8 mph.
Wednesday Night
Mostly clear, with a low around 60. West wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 77. Calm wind becoming south 5 to 7 mph in the afternoon.
Thursday Night
A 40 percent chance of showers after 2am. Partly cloudy, with a low around 64.
Friday
A 40 percent chance of showers. Mostly cloudy, with a high near 76.
Friday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Saturday
Showers likely, mainly before 2pm. Mostly cloudy, with a high near 78. Chance of precipitation is 60%.
Saturday Night
A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 64.
Sunday
Mostly sunny, with a high near 83.
Sunday Night
Mostly clear, with a low around 65.
Monday
Mostly sunny, with a high near 83.
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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:
7:07 am EDT Jun 23, 2026
Forecast Valid:
9am EDT Jun 23, 2026-6pm EDT Jun 29, 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