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

66°F

19°C

Humidity 100%
Wind Speed S 3 mph
Barometer 30.10 in (1019.1 mb)
Dewpoint 66°F (19°C)
Visibility 2.00 mi
Last update 28 Jun 9:56 am EDT
Extended Forecast for

Mystic CT

  • Today

    Today: A 30 percent chance of showers before 11am. Mostly cloudy, with a high near 76. South wind 6 to 8 mph.

    High: 76 °F

    Chance
    Showers then
    Mostly Cloudy

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly before 5am. Mostly cloudy, with a low around 68. Southwest wind 5 to 7 mph.

    Low: 68 °F

    Chance
    T-storms

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 82. West wind 6 to 9 mph.

    High: 82 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 67. West wind around 5 mph becoming calm in the evening.

    Low: 67 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 82. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 82 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 69.

    Low: 69 °F

    Partly Cloudy
    then Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers before 8am, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 50%.

    High: 82 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 67. Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

Detailed Forecast

Today
A 30 percent chance of showers before 11am. Mostly cloudy, with a high near 76. South wind 6 to 8 mph.
Tonight
A 40 percent chance of showers and thunderstorms, mainly before 5am. Mostly cloudy, with a low around 68. Southwest wind 5 to 7 mph.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 82. West wind 6 to 9 mph.
Sunday Night
Mostly clear, with a low around 67. West wind around 5 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 82. Calm wind becoming south 5 to 8 mph in the afternoon.
Monday Night
A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 69.
Tuesday
A chance of showers before 8am, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 50%.
Tuesday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 67. Chance of precipitation is 30%.
Wednesday
Sunny, with a high near 83.
Wednesday Night
Mostly clear, with a low around 66.
Thursday
Mostly sunny, with a high near 83.
Thursday Night
Partly cloudy, with a low around 65.
Independence Day
Sunny, with a high near 81.
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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:
10:29 am EDT Jun 28, 2025
Forecast Valid:
10am EDT Jun 28, 2025-6pm EDT Jul 4, 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