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.

Overcast

45°F

7°C

Humidity 74%
Wind Speed E 16 mph
Barometer 30.30 in (1025.9 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 4 Apr 6:56 pm EDT
Extended Forecast for

Mystic CT

  • Tonight

    Tonight: A slight chance of showers between 11pm and 2am, then areas of drizzle with a chance of showers after 2am. The drizzle could be heavy at times. Areas of dense fog after 2am. Otherwise, cloudy, with a low around 40. East wind 6 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.

    Low: 40 °F

    Chance
    Showers and
    Areas Dense
    Fog

  • Sunday

    Sunday: Areas of drizzle with a chance of showers before 11am, then showers, mainly after 2pm. The drizzle could be heavy at times. Areas of dense fog before 11am. High near 56. Southwest wind 9 to 15 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 56 °F

    Chance
    Showers and
    Areas Dense
    Fog then
    Showers

  • Sunday Night

    Sunday Night: Showers, mainly before 11pm. Low around 38. Southwest wind around 7 mph becoming northwest in the evening. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 38 °F

    Showers then
    Slight Chance
    Showers

  • Monday

    Monday: Sunny, with a high near 51. West wind 8 to 10 mph, with gusts as high as 20 mph.

    High: 51 °F

    Sunny

  • Monday Night

    Monday Night: A 20 percent chance of rain after 2am. Partly cloudy, with a low around 36. West wind around 5 mph becoming calm in the evening.

    Low: 36 °F

    Partly Cloudy
    then Slight
    Chance Rain

  • Tuesday

    Tuesday: A chance of rain between 8am and 2pm. Mostly sunny, with a high near 49. Chance of precipitation is 30%.

    High: 49 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 27.

    Low: 27 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 45.

    High: 45 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 32.

    Low: 32 °F

    Mostly Clear

Detailed Forecast

Tonight
A slight chance of showers between 11pm and 2am, then areas of drizzle with a chance of showers after 2am. The drizzle could be heavy at times. Areas of dense fog after 2am. Otherwise, cloudy, with a low around 40. East wind 6 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.
Sunday
Areas of drizzle with a chance of showers before 11am, then showers, mainly after 2pm. The drizzle could be heavy at times. Areas of dense fog before 11am. High near 56. Southwest wind 9 to 15 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Showers, mainly before 11pm. Low around 38. Southwest wind around 7 mph becoming northwest in the evening. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Sunny, with a high near 51. West wind 8 to 10 mph, with gusts as high as 20 mph.
Monday Night
A 20 percent chance of rain after 2am. Partly cloudy, with a low around 36. West wind around 5 mph becoming calm in the evening.
Tuesday
A chance of rain between 8am and 2pm. Mostly sunny, with a high near 49. Chance of precipitation is 30%.
Tuesday Night
Mostly clear, with a low around 27.
Wednesday
Sunny, with a high near 45.
Wednesday Night
Mostly clear, with a low around 32.
Thursday
Mostly sunny, with a high near 51.
Thursday Night
Partly cloudy, with a low around 41.
Friday
Mostly sunny, with a high near 58.
Friday Night
Partly cloudy, with a low around 41.
Saturday
Mostly sunny, with a high near 57.
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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:
2:50 pm EDT Apr 4, 2026
Forecast Valid:
7pm EDT Apr 4, 2026-6pm EDT Apr 11, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation