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.

Fair

39°F

4°C

Humidity 93%
Wind Speed Calm
Barometer 30.00 in (1015.8 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 11 Mar 3:56 am EDT
Extended Forecast for

Mystic CT

  • Today

    Today: A 20 percent chance of showers after 2pm. Increasing clouds, with a high near 58. East wind 3 to 8 mph.

    High: 58 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 5am. Areas of fog. Otherwise, mostly cloudy, with a low around 43. South wind 7 to 9 mph, with gusts as high as 24 mph.

    Low: 43 °F

    Chance
    Showers and
    Areas Fog

  • Thursday

    Thursday: A chance of rain showers before 2pm, then a chance of rain and snow showers. Mostly cloudy, with a temperature rising to near 51 by 10am, then falling to around 40 during the remainder of the day. Northwest wind around 11 mph, with gusts as high as 24 mph. Chance of precipitation is 50%.

    High: 51 °F⇓

    Chance
    Showers then
    Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: Mostly cloudy during the early evening, then gradual clearing, with a low around 29. Northwest wind around 7 mph, with gusts as high as 20 mph.

    Low: 29 °F

    Gradual
    Clearing

  • Friday

    Friday: Increasing clouds, with a high near 44. West wind 5 to 11 mph becoming south in the afternoon. Winds could gust as high as 23 mph.

    High: 44 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: A 30 percent chance of showers before 2am. Mostly cloudy, with a low around 36.

    Low: 36 °F

    Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 47.

    High: 47 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 29.

    Low: 29 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 46.

    High: 46 °F

    Mostly Cloudy

Detailed Forecast

Today
A 20 percent chance of showers after 2pm. Increasing clouds, with a high near 58. East wind 3 to 8 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 5am. Areas of fog. Otherwise, mostly cloudy, with a low around 43. South wind 7 to 9 mph, with gusts as high as 24 mph.
Thursday
A chance of rain showers before 2pm, then a chance of rain and snow showers. Mostly cloudy, with a temperature rising to near 51 by 10am, then falling to around 40 during the remainder of the day. Northwest wind around 11 mph, with gusts as high as 24 mph. Chance of precipitation is 50%.
Thursday Night
Mostly cloudy during the early evening, then gradual clearing, with a low around 29. Northwest wind around 7 mph, with gusts as high as 20 mph.
Friday
Increasing clouds, with a high near 44. West wind 5 to 11 mph becoming south in the afternoon. Winds could gust as high as 23 mph.
Friday Night
A 30 percent chance of showers before 2am. Mostly cloudy, with a low around 36.
Saturday
Sunny, with a high near 47.
Saturday Night
Partly cloudy, with a low around 29.
Sunday
Mostly cloudy, with a high near 46.
Sunday Night
Rain, mainly after 2am. Low around 38. Chance of precipitation is 80%.
Monday
Rain. High near 54. Chance of precipitation is 90%.
Monday Night
Rain likely. Mostly cloudy, with a low around 31. Chance of precipitation is 60%.
Tuesday
Mostly sunny, with a high near 40.
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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:
3:05 am EDT Mar 11, 2026
Forecast Valid:
4am EDT Mar 11, 2026-6pm EDT Mar 17, 2026
 
Forecast Discussion
 
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Additional Resources

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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