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

65°F

18°C

Humidity 73%
Wind Speed SW 10 mph
Barometer 29.92 in (1013.2 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 15 Apr 11:56 am EDT
Extended Forecast for

Mystic CT

  • This Afternoon

    This Afternoon: Mostly sunny, with a temperature falling to around 64 by 5pm. South wind 6 to 8 mph.

    High: 70 °F⇓

    Mostly Sunny

  • Tonight

    Tonight: A chance of showers and thunderstorms. Mostly cloudy, with a low around 51. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%.

    Low: 51 °F

    Chance
    T-storms

  • Thursday

    Thursday: Partly sunny, with a high near 68. South wind 3 to 8 mph.

    High: 68 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 51. South wind around 6 mph becoming calm in the evening.

    Low: 51 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Friday

    Friday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 70. Calm wind becoming southwest 5 to 7 mph in the afternoon. Chance of precipitation is 50%.

    High: 70 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers before 8pm. Mostly cloudy, with a low around 49.

    Low: 49 °F

    Chance
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 60.

    High: 60 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 46.

    Low: 46 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 50 percent chance of showers after 8am. Mostly cloudy, with a high near 58.

    High: 58 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Mostly sunny, with a temperature falling to around 64 by 5pm. South wind 6 to 8 mph.
Tonight
A chance of showers and thunderstorms. Mostly cloudy, with a low around 51. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%.
Thursday
Partly sunny, with a high near 68. South wind 3 to 8 mph.
Thursday Night
A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 51. South wind around 6 mph becoming calm in the evening.
Friday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 70. Calm wind becoming southwest 5 to 7 mph in the afternoon. Chance of precipitation is 50%.
Friday Night
A 30 percent chance of showers before 8pm. Mostly cloudy, with a low around 49.
Saturday
Partly sunny, with a high near 60.
Saturday Night
Mostly cloudy, with a low around 46.
Sunday
A 50 percent chance of showers after 8am. Mostly cloudy, with a high near 58.
Sunday Night
A chance of rain showers before 5am, then a chance of rain and snow showers. Mostly cloudy, with a low around 38. Chance of precipitation is 50%.
Monday
A 30 percent chance of snow showers. Mostly sunny, with a high near 49.
Monday Night
Mostly clear, with a low around 32.
Tuesday
Sunny, with a high near 51.
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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 15, 2026
Forecast Valid:
12pm EDT Apr 15, 2026-6pm EDT Apr 21, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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