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.

A Few Clouds

46°F

8°C

Humidity 42%
Wind Speed NE 14 mph
Barometer 29.94 in (1013.9 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 21 Mar 8:56 pm EDT
Extended Forecast for

Mystic CT

  • Tonight

    Tonight: Mostly cloudy, with a low around 37. Calm wind becoming southeast around 5 mph after midnight.

    Low: 37 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers, mainly after 5pm. Mostly cloudy, with a high near 50. South wind around 10 mph.

    High: 50 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Rain. Low around 36. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 36 °F

    Rain

  • Monday

    Monday: A 50 percent chance of rain before 2pm. Cloudy, with a high near 43. North wind 8 to 10 mph, with gusts as high as 20 mph.

    High: 43 °F

    Chance Rain

  • Monday Night

    Monday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 28. North wind around 6 mph.

    Low: 28 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Sunny, with a high near 44.

    High: 44 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 32.

    Low: 32 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, with a high near 48.

    High: 48 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 33.

    Low: 33 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 37. Calm wind becoming southeast around 5 mph after midnight.
Sunday
A 30 percent chance of showers, mainly after 5pm. Mostly cloudy, with a high near 50. South wind around 10 mph.
Sunday Night
Rain. Low around 36. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Monday
A 50 percent chance of rain before 2pm. Cloudy, with a high near 43. North wind 8 to 10 mph, with gusts as high as 20 mph.
Monday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 28. North wind around 6 mph.
Tuesday
Sunny, with a high near 44.
Tuesday Night
Increasing clouds, with a low around 32.
Wednesday
Partly sunny, with a high near 48.
Wednesday Night
Mostly cloudy, with a low around 33.
Thursday
A 30 percent chance of rain after 8am. Partly sunny, with a high near 49.
Thursday Night
Rain likely. Mostly cloudy, with a low around 38. Chance of precipitation is 60%.
Friday
Mostly sunny, with a high near 49.
Friday Night
Partly cloudy, with a low around 25.
Saturday
Sunny, with a high near 41.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mystic CT
 41.35°N 71.96°W (Elev. 0 ft)
Last Update:
3:03 pm EDT Mar 21, 2026
Forecast Valid:
9pm EDT Mar 21, 2026-6pm EDT Mar 28, 2026
 
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