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.

Mostly Cloudy

68°F

20°C

Humidity 87%
Wind Speed SW 5 mph
Barometer 30.30 in (1025.9 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 16 Sep 8:56 pm EDT
Extended Forecast for

Mystic CT

  • Tonight

    Tonight: Patchy fog. Otherwise, mostly clear, with a steady temperature around 65. Light west wind.

    Low: 65 °F

    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 77. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 77 °F

    Patchy Fog
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: A 40 percent chance of showers, mainly between 11pm and 5am. Mostly cloudy, with a low around 66. Southwest wind 5 to 7 mph.

    Low: 66 °F

    Chance
    Showers

  • Friday

    Friday: Sunny, with a high near 78. North wind 6 to 8 mph.

    High: 78 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 52. North wind 5 to 7 mph.

    Low: 52 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 54.

    Low: 54 °F

    Mostly Cloudy

  • Sunday

    Sunday: Showers likely, mainly after 2pm. Mostly cloudy, with a high near 67. Chance of precipitation is 60%.

    High: 67 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely, mainly before 2am. Mostly cloudy, with a low around 56. Chance of precipitation is 60%.

    Low: 56 °F

    Showers
    Likely

Detailed Forecast

Tonight
Patchy fog. Otherwise, mostly clear, with a steady temperature around 65. Light west wind.
Thursday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 77. Calm wind becoming south 5 to 8 mph in the afternoon.
Thursday Night
A 40 percent chance of showers, mainly between 11pm and 5am. Mostly cloudy, with a low around 66. Southwest wind 5 to 7 mph.
Friday
Sunny, with a high near 78. North wind 6 to 8 mph.
Friday Night
Partly cloudy, with a low around 52. North wind 5 to 7 mph.
Saturday
Mostly sunny, with a high near 67.
Saturday Night
Mostly cloudy, with a low around 54.
Sunday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 67. Chance of precipitation is 60%.
Sunday Night
Showers likely, mainly before 2am. Mostly cloudy, with a low around 56. Chance of precipitation is 60%.
Monday
A 30 percent chance of showers. Partly sunny, with a high near 67.
Monday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 54.
Tuesday
A 30 percent chance of showers. Partly sunny, with a high near 67.
Tuesday Night
Mostly cloudy, with a low around 54.
Wednesday
Partly sunny, with a high near 67.
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:
3:19 pm EDT Sep 16, 2026
Forecast Valid:
9pm EDT Sep 16, 2026-6pm EDT Sep 23, 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