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

68°F

20°C

Humidity 100%
Wind Speed SE 5 mph
Barometer 30.13 in (1020.1 mb)
Dewpoint 68°F (20°C)
Visibility 2.00 mi
Last update 12 Jul 9:56 pm EDT
Extended Forecast for

Mystic CT

  • Tonight

    Tonight: Mostly cloudy, with a low around 67. Calm wind.

    Low: 67 °F

    Mostly Cloudy

  • Sunday

    Sunday: Cloudy, then gradually becoming mostly sunny, with a high near 78. Southeast wind 3 to 7 mph.

    High: 78 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 69. Light southeast wind.

    Low: 69 °F

    Mostly Cloudy

  • Monday

    Monday: A slight chance of showers between 2pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 79. Calm wind becoming south 5 to 8 mph in the morning. Chance of precipitation is 20%.

    High: 79 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers. Mostly cloudy, with a low around 70. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 70 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 71.

    Low: 71 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 72.

    Low: 72 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 67. Calm wind.
Sunday
Cloudy, then gradually becoming mostly sunny, with a high near 78. Southeast wind 3 to 7 mph.
Sunday Night
Mostly cloudy, with a low around 69. Light southeast wind.
Monday
A slight chance of showers between 2pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 79. Calm wind becoming south 5 to 8 mph in the morning. Chance of precipitation is 20%.
Monday Night
A chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers. Mostly cloudy, with a low around 70. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Tuesday
Mostly sunny, with a high near 85.
Tuesday Night
Mostly clear, with a low around 71.
Wednesday
Mostly sunny, with a high near 85.
Wednesday Night
Mostly cloudy, with a low around 72.
Thursday
A 30 percent chance of showers after 2pm. Partly sunny, with a high near 84.
Thursday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 72.
Friday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
Friday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 81.
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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:
6:14 pm EDT Jul 12, 2025
Forecast Valid:
11pm EDT Jul 12, 2025-6pm EDT Jul 19, 2025
 
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