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.

Fog/Mist

46°F

8°C

Humidity 96%
Wind Speed SE 9 mph
Barometer 29.94 in (1013.9 mb)
Dewpoint 45°F (7°C)
Visibility 2.00 mi
Wind Chill41°F (5°C)
Last update 19 Apr 12:56 am EDT
Extended Forecast for

Mystic CT

  • Overnight

    Overnight: Areas of fog. Otherwise, cloudy, with a low around 45. Light southeast wind.

    Low: 45 °F

    Areas Fog

  • Sunday

    Sunday: Showers, mainly before 5pm. Patchy fog before 11am. High near 56. Southeast wind 6 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 56 °F

    Showers and
    Patchy Fog

  • Sunday Night

    Sunday Night: A 30 percent chance of showers before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 36. West wind around 6 mph, with gusts as high as 20 mph.

    Low: 36 °F

    Chance
    Showers then
    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers after 2pm. Mostly sunny, with a high near 50. Northwest wind 7 to 9 mph.

    High: 50 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 31. North wind around 6 mph.

    Low: 31 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 49.

    High: 49 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 38.

    Low: 38 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 55.

    High: 55 °F

    Mostly Cloudy

  • Wednesday Night

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

    Low: 39 °F

    Partly Cloudy

Detailed Forecast

Overnight
Areas of fog. Otherwise, cloudy, with a low around 45. Light southeast wind.
Sunday
Showers, mainly before 5pm. Patchy fog before 11am. High near 56. Southeast wind 6 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
A 30 percent chance of showers before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 36. West wind around 6 mph, with gusts as high as 20 mph.
Monday
A 20 percent chance of showers after 2pm. Mostly sunny, with a high near 50. Northwest wind 7 to 9 mph.
Monday Night
Partly cloudy, with a low around 31. North wind around 6 mph.
Tuesday
Sunny, with a high near 49.
Tuesday Night
Increasing clouds, with a low around 38.
Wednesday
Mostly cloudy, with a high near 55.
Wednesday Night
Partly cloudy, with a low around 39.
Thursday
Mostly sunny, with a high near 60.
Thursday Night
Partly cloudy, with a low around 43.
Friday
Mostly sunny, with a high near 60.
Friday Night
Partly cloudy, with a low around 42.
Saturday
A 30 percent chance of showers. Mostly sunny, with a high near 58.
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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:
6:34 pm EDT Apr 18, 2026
Forecast Valid:
1am EDT Apr 19, 2026-6pm EDT Apr 25, 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