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

39°F

4°C

Humidity 65%
Wind Speed SW 13 mph
Barometer 29.91 in (1012.7 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 13 Jan 4:56 pm EST
Extended Forecast for

Mystic CT

  • Tonight

    Tonight: A 20 percent chance of rain after 4am. Mostly cloudy, with a low around 37. Southwest wind 6 to 9 mph, with gusts as high as 23 mph.

    Low: 37 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Wednesday

    Wednesday: A 20 percent chance of rain before 10am. Mostly cloudy, with a high near 46. Southwest wind 6 to 9 mph.

    High: 46 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain, mainly after 1am. Cloudy, with a low around 31. Calm wind becoming south around 5 mph after midnight.

    Low: 31 °F

    Chance Rain

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a temperature rising to near 38 by 10am, then falling to around 30 during the remainder of the day. Wind chill values between 20 and 30. West wind 6 to 11 mph, with gusts as high as 22 mph.

    High: 38 °F⇓

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 16. West wind around 9 mph, with gusts as high as 22 mph.

    Low: 16 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 35.

    High: 35 °F

    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 41.

    High: 41 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of rain after 4am. Mostly cloudy, with a low around 37. Southwest wind 6 to 9 mph, with gusts as high as 23 mph.
Wednesday
A 20 percent chance of rain before 10am. Mostly cloudy, with a high near 46. Southwest wind 6 to 9 mph.
Wednesday Night
A 30 percent chance of rain, mainly after 1am. Cloudy, with a low around 31. Calm wind becoming south around 5 mph after midnight.
Thursday
Mostly cloudy, then gradually becoming sunny, with a temperature rising to near 38 by 10am, then falling to around 30 during the remainder of the day. Wind chill values between 20 and 30. West wind 6 to 11 mph, with gusts as high as 22 mph.
Thursday Night
Mostly clear, with a low around 16. West wind around 9 mph, with gusts as high as 22 mph.
Friday
Sunny, with a high near 35.
Friday Night
Mostly cloudy, with a low around 27.
Saturday
Partly sunny, with a high near 41.
Saturday Night
Mostly cloudy, with a low around 27.
Sunday
Partly sunny, with a high near 35.
Sunday Night
Partly cloudy, with a low around 21.
M.L.King Day
Mostly sunny, with a high near 32.
Monday Night
Partly cloudy, with a low around 19.
Tuesday
Mostly sunny, with a high near 28.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mystic CT
 41.35°N 71.96°W (Elev. 0 ft)
Last Update:
12:35 pm EST Jan 13, 2026
Forecast Valid:
5pm EST Jan 13, 2026-6pm EST Jan 20, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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