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

24°F

-4°C

Humidity 96%
Wind Speed NW 3 mph
Barometer 30.32 in (1026.7 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Last update 9 Jan 3:56 am EST
Extended Forecast for

Mystic CT

  • Today

    Today: A 20 percent chance of rain after 3pm. Partly sunny, with a high near 52. Calm wind becoming south 5 to 9 mph in the morning.

    High: 52 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Tonight

    Tonight: Rain likely, mainly before 10pm. Cloudy, with a low around 39. South wind 6 to 8 mph becoming west after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 39 °F

    Rain Likely
    then Cloudy

  • Saturday

    Saturday: A 50 percent chance of rain after noon. Cloudy, with a high near 46. Light and variable wind becoming northeast around 5 mph in the afternoon.

    High: 46 °F

    Mostly Cloudy
    then Chance
    Rain

  • Saturday Night

    Saturday Night: Rain. Low around 37. East wind around 6 mph becoming north after midnight. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 37 °F

    Rain

  • Sunday

    Sunday: Rain likely, mainly before 7am, then a chance of showers after noon. Mostly cloudy, with a high near 44. West wind 7 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 44 °F

    Rain Likely

  • Sunday Night

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

    Low: 28 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 39.

    High: 39 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 30.

    Low: 30 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 42.

    High: 42 °F

    Sunny

Detailed Forecast

Today
A 20 percent chance of rain after 3pm. Partly sunny, with a high near 52. Calm wind becoming south 5 to 9 mph in the morning.
Tonight
Rain likely, mainly before 10pm. Cloudy, with a low around 39. South wind 6 to 8 mph becoming west after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
A 50 percent chance of rain after noon. Cloudy, with a high near 46. Light and variable wind becoming northeast around 5 mph in the afternoon.
Saturday Night
Rain. Low around 37. East wind around 6 mph becoming north after midnight. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Sunday
Rain likely, mainly before 7am, then a chance of showers after noon. Mostly cloudy, with a high near 44. West wind 7 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Partly cloudy, with a low around 28.
Monday
Sunny, with a high near 39.
Monday Night
Partly cloudy, with a low around 30.
Tuesday
Sunny, with a high near 42.
Tuesday Night
Mostly cloudy, with a low around 34.
Wednesday
Mostly cloudy, with a high near 45.
Wednesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 32.
Thursday
A 30 percent chance of showers. Mostly cloudy, with a high near 40.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mystic CT
 41.35°N 71.96°W (Elev. 0 ft)
Last Update:
3:06 am EST Jan 9, 2026
Forecast Valid:
4am EST Jan 9, 2026-6pm EST Jan 15, 2026
 
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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

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation