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

20°C

68°F

Humidity 100%
Wind Speed SE 7 km/h
Barometer 1020.1 mb (30.13 in)
Dewpoint 20°C (68°F)
Visibility 3.22 km
Last update 12 Jul 9:56 pm EDT
Extended Forecast for

Mystic CT

  • Tonight

    Tonight: Mostly cloudy, with a low around 19. Calm wind.

    Low: 19 °C

    Mostly Cloudy

  • Sunday

    Sunday: Cloudy, then gradually becoming mostly sunny, with a high near 26. Southeast wind 5 to 11 km/h.

    High: 26 °C

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 21. Calm wind.

    Low: 21 °C

    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 26. Light southeast wind becoming south 8 to 13 km/h in the morning. Chance of precipitation is 20%.

    High: 26 °C

    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 21. Southwest wind 3 to 8 km/h. Chance of precipitation is 30%.

    Low: 21 °C

    Chance
    Showers

  • Tuesday

    Tuesday: Mostly sunny, with a high near 29.

    High: 29 °C

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 22.

    Low: 22 °C

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 29.

    High: 29 °C

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 22.

    Low: 22 °C

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 19. Calm wind.
Sunday
Cloudy, then gradually becoming mostly sunny, with a high near 26. Southeast wind 5 to 11 km/h.
Sunday Night
Mostly cloudy, with a low around 21. Calm 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 26. Light southeast wind becoming south 8 to 13 km/h 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 21. Southwest wind 3 to 8 km/h. Chance of precipitation is 30%.
Tuesday
Mostly sunny, with a high near 29.
Tuesday Night
Mostly clear, with a low around 22.
Wednesday
Mostly sunny, with a high near 29.
Wednesday Night
Mostly cloudy, with a low around 22.
Thursday
A 30 percent chance of showers after 2pm. Partly sunny, with a high near 29.
Thursday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 22.
Friday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 29.
Friday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 21.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 27.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mystic CT
 41.35°N 71.96°W (Elev. 0 m)
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