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

40°F

4°C

Humidity 79%
Wind Speed S 5 mph
Barometer 30.14 in (1020.5 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 20 Mar 8:56 am EDT
Extended Forecast for

Niantic CT

  • Today

    Today: A 30 percent chance of rain after 5pm. Mostly sunny, with a high near 50. Light southwest wind becoming south 5 to 10 mph in the afternoon. Winds could gust as high as 21 mph.

    High: 50 °F

    Sunny then
    Chance Rain

  • Tonight

    Tonight: Rain, mainly before 2am. Low around 40. Southwest wind 6 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 40 °F

    Rain

  • Saturday

    Saturday: Sunny, with a high near 53. Northwest wind 6 to 8 mph.

    High: 53 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 35. Calm wind.

    Low: 35 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of rain and snow before 11am, then a chance of rain. Mostly cloudy, with a high near 50. Light south wind increasing to 5 to 9 mph in the morning. Chance of precipitation is 30%.

    High: 50 °F

    Slight Chance
    Rain/Snow
    then Chance
    Rain

  • Sunday Night

    Sunday Night: Rain likely, mainly after 8pm. Mostly cloudy, with a low around 38. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 38 °F

    Rain Likely

  • Monday

    Monday: A 40 percent chance of rain before 2pm. Mostly cloudy, with a high near 47.

    High: 47 °F

    Chance Rain

  • Monday Night

    Monday Night: Partly cloudy, with a low around 28.

    Low: 28 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 44.

    High: 44 °F

    Mostly Sunny

Detailed Forecast

Today
A 30 percent chance of rain after 5pm. Mostly sunny, with a high near 50. Light southwest wind becoming south 5 to 10 mph in the afternoon. Winds could gust as high as 21 mph.
Tonight
Rain, mainly before 2am. Low around 40. Southwest wind 6 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
Sunny, with a high near 53. Northwest wind 6 to 8 mph.
Saturday Night
Mostly cloudy, with a low around 35. Calm wind.
Sunday
A slight chance of rain and snow before 11am, then a chance of rain. Mostly cloudy, with a high near 50. Light south wind increasing to 5 to 9 mph in the morning. Chance of precipitation is 30%.
Sunday Night
Rain likely, mainly after 8pm. Mostly cloudy, with a low around 38. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Monday
A 40 percent chance of rain before 2pm. Mostly cloudy, with a high near 47.
Monday Night
Partly cloudy, with a low around 28.
Tuesday
Mostly sunny, with a high near 44.
Tuesday Night
Partly cloudy, with a low around 31.
Wednesday
Partly sunny, with a high near 48.
Wednesday Night
Mostly cloudy, with a low around 29.
Thursday
A 30 percent chance of rain. Partly sunny, with a high near 48.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Niantic CT
 41.34°N 72.2°W (Elev. 92 ft)
Last Update:
2:26 am EDT Mar 20, 2026
Forecast Valid:
9am EDT Mar 20, 2026-6pm EDT Mar 26, 2026
 
Forecast Discussion
 
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Additional Resources

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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