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.

Partly Cloudy

49°F

9°C

Humidity 93%
Wind Speed NE 8 mph
Barometer 30.07 in (1018.2 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 18 Apr 5:56 am EDT
Extended Forecast for

Mystic CT

  • Today

    Today: Mostly cloudy, with a high near 56. Northeast wind 5 to 8 mph.

    High: 56 °F

    Mostly Cloudy

  • Tonight

    Tonight: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 44. Light east wind.

    Low: 44 °F

    Patchy Fog

  • Sunday

    Sunday: Showers, with thunderstorms also possible after 2pm. High near 58. Light and variable wind becoming northwest 8 to 13 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 58 °F

    Showers

  • Sunday Night

    Sunday Night: A 20 percent chance of showers before 2am. Cloudy during the early evening, then gradual clearing, with a low around 37. Northwest wind 5 to 7 mph.

    Low: 37 °F

    Slight Chance
    Showers

  • Monday

    Monday: A 20 percent chance of showers after 2pm. Mostly sunny, with a high near 50. West wind 6 to 8 mph.

    High: 50 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 31.

    Low: 31 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 49.

    High: 49 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 57.

    High: 57 °F

    Partly Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 56. Northeast wind 5 to 8 mph.
Tonight
Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 44. Light east wind.
Sunday
Showers, with thunderstorms also possible after 2pm. High near 58. Light and variable wind becoming northwest 8 to 13 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A 20 percent chance of showers before 2am. Cloudy during the early evening, then gradual clearing, with a low around 37. Northwest wind 5 to 7 mph.
Monday
A 20 percent chance of showers after 2pm. Mostly sunny, with a high near 50. West wind 6 to 8 mph.
Monday Night
Partly cloudy, with a low around 31.
Tuesday
Sunny, with a high near 49.
Tuesday Night
Partly cloudy, with a low around 39.
Wednesday
Partly sunny, with a high near 57.
Wednesday Night
Partly cloudy, with a low around 40.
Thursday
Sunny, with a high near 60.
Thursday Night
Partly cloudy, with a low around 43.
Friday
Mostly sunny, with a high near 59.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mystic CT
 41.35°N 71.96°W (Elev. 0 ft)
Last Update:
5:23 am EDT Apr 18, 2026
Forecast Valid:
6am EDT Apr 18, 2026-6pm EDT Apr 24, 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